As above and dead right voltage for one dead cell. This page is for personal, non-commercial use. how? Slow crank is usually the first symptom of a dying battery. Mazda CX-3 window bounce back when closing causes and how to fix it. The easiest method to check the 12v battery in A-Class is by measuring the voltage with a multimeter. I also have had the red warning about the battery/alternator a few days ago including a message to turn off load items. Its also important to note that if this warning appears and you dont take immediate action, your car may not start anymore, and you may have to have it towed to a repair shop. Connect the positive terminal of the battery first. The batter y . It's vital to know how to repair the Auxiliary Battery Malfunction in Mercedes models if you want to have a reliable drive. Auto Repairs Are EXPENSIVE Mercedes Benz Electrical Problems: Do Mercedes have electrical problems? Do one terminal at a time and dont let water puddle on the top of the battery touch both terminals at the same time, this can short the battery. This may increase the risk of injury for the vehicle occupants.". I got 11 years from my Volvo battery some years ago. Requirements: The engine of both the vehicles should be off, and the transmission in Park. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Contact Us Service, Repairs and remapping service. Battery C, 1st Battalion, 145th FA U.S. Army. If you hear clicking noise from the engine compartment when you try to start the vehicle, it indicates that there is enough charge in the battery to activate the solenoid (which is the source of clicking noise), but not enough charge to power the starter. This warning will reset automatically if you leave the engine running for about ten minutes. Parts Catalog A healthy battery should have 12.6 volts or more when fully charged. If your A-Class continues to draw excessive electric current from the battery after you turn off the ignition, it is called parasitic draw. One or more error messages on the instrument cluster: If the car is not driven regularlyor only on short journeys, it is very common to get the Stop vehicle leave engine running error. What to do Dealers will make sure the 12V battery is secured properly free of charge. There are several reasons why the car battery light might come on, but generally, the reasons are: An old car battery Car battery connections that are corroded Car battery cables that are misconnected Dying alternator Failing serpentine belts Your car does its best with a fully-charged battery. hood battery mine is under rear seat. hi Guys My mates merc battery is dead but cannot find where the battery is located. Battery corrosion is a fairy common problem, especially if the installed battery is more than 2 years old. We have run thew car extensively on the freeway on over 100 miles trips but the message stays on and it always comes on shortly after starting and sometimes right after. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. First remove the black cable from the negative terminal using a wrench or a plier. If you have difficulty narrowing down this problem, it could be a parasitic draw, a loose connection, or a defective SAM (Signal Acquisition Module) module. Owners will be notified about the recall beginning November 29, 2022. Check these troubleshooting and repair guides for more help on your Mercedes-Benz. Your email address will not be published. Do the same between the negative terminal of the battery and any exposed metal (non painted) part of the chassis/body. Sometimes a battery showing over 12.4 volts may not be able to supply enough current to crank the engine. The leading cause of dead battery in Mercedes-Benz A-Class is internal degradation due to old age. At around 2000RPM I get 14.2Volts. We participate in the Amazon, Advance Auto Parts, eBayaffiliate programs and may earn a commission when you purchase using links on this site. There have been several conversations on this topic in the past with vendors you may use to pick up another battery. Protection class IP 43 OTHER Power connection (threaded inserts) M5 M6 M8 M8 M8 Dimensions (h x w x d) mm 167 x 181 x 77 213 x 229 x 138 220 x 330 x 172 208 x 520 x 269 220 x 330 x 172 Weight 3,5 kg 9,5 kg 14 kg 21 kg 14 kg 1. But after a few miles of driving, the warning goes away. If the warning Stop Vehicle Leave Engine Running appears on the dashboard of your Mercedes vehicle, it could indicate a problem with the voltage regulator also. Mitsubishi Mirage AC not blowing hard enough weak airflow causes, VW Jetta shakes at highway speeds causes and how to fix it, SEAT Ateca battery light is on causes and how to reset, BMW X7 AC not blowing hard enough weak airflow causes, Hyundai i20 shakes at highway speeds causes and how to fix it, Peugeot 208 bad O2 sensor symptoms, causes, and diagnosis, Chevy Trax wont start causes and how to fix it, Ford S-Max door makes a squeaking noise when opening or closing, VW Eos heater not working causes and diagnosis, Lexus UX low tire pressure warning light causes, how to reset, Audi TT RS bad spark plugs symptoms, causes, and diagnosis. You may try searching to see how to replace the auxiliary battery. A 5-watt solar panel should suffice in this regard. There are 2 batteries in the car. Get recall details from the NHTSA and find out what to do if your car been recalled. The 12 volt battery is a vital component of the starting system in Mercedes-Benz A-Class. Keeping the ignition on with the engine turned off. If this warning appears, its important to stop and leave the engine running to prevent further battery discharge. how long does the vehicle sit? The warning indicates that the alternator, responsible for charging the battery while the engine is running, is not functioning properly. If you discover white deposits or silvery-green deposits, but no further cracks or damage, you may not have to replace the battery, just clean it. To rule out dead battery, your best course of action is to jump start your A-Class using jumper cables and a healthy battery from another vehicle, or using a battery booster if available. Alternators can fail at any time, but generally they last over 100,000 miles. Also, perform a charging system test. Here's $10,000. As a respected authority in the field, Mr. Hila is dedicated to offering insightful and valuable content that resonates with both vehicle owners and mechanics. The alternator in A-Class converts mechanical energy from the engine to electricity that not only powers all the on-board accessories, but also charges the battery. JavaScript is disabled. Stop the Vehicle, Leave the Engine Running, and Wait for the Transmission to Cool, OMT 12V Battery Charger and Maintainer, Multipurpose Set for Charging Boats Motorcycles ATVs Riding, perform a full system scan of all the modules, Mercedes-Benz GLK Diesel Check Engine Oil Level, Mercedes-Benz Parking Guidance Currently Unavailable, 2006-2012 Mercedes-Benz GL/GLS-Class Light Bulb Sizes, Mercedes-Benz R-Class Rear Strut Replacement, Mercedes-Benz S-Class W221 Front Brake Pads and Rotors, From Dealer Quotes to DIY Hero: Carlos Alvarezs Inspiring Car Repair Journey, DIY Repair Success: How a Teenager in New Zealand Saved Thousands, How a Rear Level Sensor Failure in My Mercedes-Benz W221 S-Class Almost Ruined My Drive. For this purpose, a ground strap/wire is used to connect the engine and the chassis. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Then connect the negative terminal of the battery. Eventhough I am driving he car for 30 mins a day , this warning is coming frequently. A possible solution is to charge the battery with a 12-volttrickle charger. Rushit Hila, an ASE-certified engineer (G1 Automotive Maintenance and Repair), brings over two decades of hands-on experience in the automotive world to his writing. You may order presentation ready copies to distribute to your colleagues, customers, or clients, by visiting https://www.parsintl.com/publication/autoblog/. JavaScript is disabled. Higher headquarters. My '06 E350 kept giving me the low battery, convention features not available warning every day. Pour hot boiling water over the corroded terminals and the corrosion will just melt away. 2021-2023 Ford F-150 gains FP700 package for 700 hp with a warranty. Pullover as soon as it is safe and allow the engine to idle. If you keep getting a stop vehicle leave engine running warning too frequently, you may need to replace the main or auxiliary battery. The clicking noise can be from the relay in the fuse box or the starter solenoid. After cleaning, reconnect the cables in reverse order, positive first, then negative. The voltage regulator is responsible for maintaining the charging of the car's battery; if it fails, the battery will no longer be charged and will discharge. Enjoy banner ad-free browsing with Mercedes-Benz Forum Plus. The most common causes of dead battery in A-Class are internal degradation of the battery due to old age, and bad alternator but can also be caused by parasitic draw, and if the vehicle has been parked for a long time. Thus, a detachment of the electrical connections from the battery cannot be ruled out. This can happen due to internal degradation of the battery, if the vehicle has been sitting for a long time, or if the alternator in your A-Class has malfunctioned and not charging the battery properly. the front battery is for your sensatronic brakes, it only powers the brake hydraulic unit in case of main battery failure. Get Help, Terms & Conditions DMCA "In the event of a crash, the 12V battery could move in the spare wheel well. Generic OBD2 scanners are not much help, but a few popular scanners, such as the YOUCANIC Full System Scanner. Quick facts. 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Frequently Asked Questions The auxiliary battery malfunctions may cause various electrical errors in the vehicle. The voltage regulator is responsible for maintaining the charging of the cars battery; if it fails, the battery will no longer be charged and will discharge. Privacy Policy Remove all the bolts from the tie-down and take out the battery. Thanks for subscribing. The most common problem that triggers the stop vehicle leaveengine runninga malfunction on a Mercedes-Benz is due to a discharged battery. (No subject)Aamer, Be careful not to touch both terminals with your metal tool, it will be one expensive mistake. If you did wait, test them after a day or so Felicita e un bicchiere di vino con un panino. But now the car won't start at all. Corrosion occurs when the battery acid reacts with the metal terminals which can lead to loss of contact and reduced current flow. This method is recommended if the vehicle is parked at home for an extended time. Did you fix the problem? They also check and confirm that the alternator is working fine. - Present Utah County South Armory Spanish Fork, Utah, United States. This error message comes up when the transmission and transmission fluid is overheating, which is very common if you use your Mercedes-Benz to tow. What is the auxiliary battery used for? Therefore it is recommended to keep the engine of the donor vehicle off when jump starting your A-Class. For a better experience, please enable JavaScript in your browser before proceeding. Connect the black cable to the negative terminal of donor battery. A Mercedes Battery can last 4 to 5 years. Does the Pontiac Aztek have Android Auto? I managed to get home and after a few days of non use I just checked the voltage and it was about 11V. Wait for the warning message to clear before resuming driving. It powers the starter motor that turns over the engine. Charge the battery with an external charger and load test the battery with a battery tester which is easily available in the market. Content is for informational purposes only. Inspect the connectors of the ground cables (battery to body, body to engine) for any signs of rust or corrosion. It could lead to a dead main battery if not addressed. But before replacing the battery, you should rule out any other problems that may cause the dead battery symptoms, e.g. Another symptom of weak battery in A-Class is flickering dashboard lights and/or rapid clicking noise when you try to start the engine. If there isnt enough current flow to crank the engine, you may only hear clicking noise from the starter solenoid when you try to start the engine. The care is 11 years old and does not have a Mercedes brand battery in it so I assume it may be on its second or third battery. The light never when off. Even if it would sit for 1 day, the warning would come on and you can hear the slowness in the cranking. What year(s) Benz are you talking about? Follow @currentopscom. Reply. Fault Code Lookup Too many electronic consumers are connected to the auxiliary outlets. Once I drove the car for a few miles, that would go away. Of the five possible listed causes, two are software-related, one is hardware-related, one is a cooling issue and the last is a false-positive detection error, which causes the "48V battery to disconnect itself." It also recommends the replacement of 48V batteries in several Mercedes-Benz models. Symptom: Slow engine crank sound Quick cleaning: There is a neat little trick with which you can clean corrosion on the battery terminals of your A-Class in under a minute. For this step, you will need a scanner to read Mercedes-Benz modules. Mercedes-Benz is recalling just under 20,000 examples of the CLS-Class Coupe and E-Class Sedan to inspect the anchoring systems for their 12-volt batteries. Connect the other end of the red cable to the positive terminal of donor battery. It costs $45 to $250; the price may vary depending on your batterys size, power, and quality. If the error message keeps coming up too frequently, locate the battery, and check the negative and positive connections for corrosion. I would have the battery checked first, if it's the original battery then it's probably seen better days by now. Warning: There is always a risk of burning up the alternator or other electrical components if the engine of the donor battery vehicle is running during jump start. The most common symptoms of dead battery in Mercedes-Benz A-Class are slow engine crank, no start, dim lights, flickering dashboard lights and clicking noises when trying to start the engine. Depending on the cause, the vehicle may: Not start It just started this problem with the low battery warning about two weeks ago. Save. Touch one probe to the negative terminal of the battery, and the other probe to any exposed metal part of the engine. The leading cause of clicking noise and no start in Mercedes-Benz A-Class is weak battery. Located in the trunk, the batteries can come free in a collision, removing the power source for various safety systems. Save my name, email, and website in this browser for the next time I comment. To ensure that the vehicle is able to start, please connect a battery charger or drive the vehicle for 30 to 60 minutes. Then disconnect the positive terminal of the battery. If there isnt enough charge in the battery to power the starter motor, and you try to crank the engine, the battery voltage will get so low that it cant properly power the lights, accessories and of-course the starter. The negative terminal of the battery is connected to the body/chassis of A-Class, called a ground connection. The 12 volt battery is a vital component of the starting system in Mercedes-Benz A-Class. We didnt check the battery because it looked like a pain to change out. Mercedes-Benz is recalling just under 20,000 examples of the CLS-Class Coupe and E-Class Sedan to inspect the anchoring systems for their 12-volt batteries. Owner notices should be mailed by the end of November. This will be the brush pack possibly just worn out, it will not be the battery as this cannot turn on the charging lamp. Should have checked the battery with the engine off, will probably be that. Another option is disconnecting the battery, removing it from the car, and charging it. Just popped the car round to Klasse and he has ordered a new reg pack for Monday, so I'll let you know. A good example is the 210 amp-hours of a golf cart standard battery. Screw in all the bolts and tighten them down. You can check the quality of the ground connection in A-Class by doing a conductivity test between the negative terminal of the battery and the engine. Technically, the engineering "Nominal Voltage" is 12.8V and 105Ah and You must log in or register to reply here. Please follow the instructions below to enable JavaScript in your browser. It rarely goes away. The engine also requires a ground connection to function, but the way the engine is mounted, it does not allow the electric current to flow between the engine and the body (due to non-conductive rubber insulated engine mounts). You show under 01 Mar 2023 It can be really easy to ignore the warning lights that flash up on your dashboard now and again but these warning lights play a vital role and indicate problems with your vehicle that need checking or immediate action. the MercedesMe app is wrong!! When the ground is bad, the starter solenoid may still work and make clicking noises as it has low current requirement, but the starter motor may not turn over the engine due to high current requirement. Clean the disconnected terminals and the surface under the battery. Connect a charger to the batterys positive and negative jump-starting posts in the engine bay. lol thats the fancy word they like us to use for parasitic draw. This error message can affect any 2015 and newer Mercedes-Benz model, including C300, GLC300, E300, C200, C43 AMG, C250, C180, etc. The company has already re-engineered the components for production vehicles, so any example produced from August 2022 onward already has the improved part. When the error message stop vehicle leave engine running shows on the instrument cluster of a Mercedes-Benz, find a safe location to park and let the engine run in Park. You are using an out of date browser. If your Mercedes-Benz A-Class is hard to start, has slow crank, or makes clicking noise when you try to start the engine, it most probably is due to dead battery. Mercedes-Benz Sedan / Coupe / Wagon Forums. I have just gone out and re checked voltages and it is now telling me that the no run voltage is 12V and the running voltage is 11.9 V! Am I supposed to measure it unhooked from the car? .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }. - Present 1st Battalion, 145th FA | Organic. Disconnect the negative terminal of the battery first. This could be due to a problem with your car's electrical system, faulty alternator or battery, bad electrical connection, or damaged cabling. This is at around 2000RPM and within a few seconds I get the red warning unlike the time of my earlier post, so it seems i may have an intermittent alternator problem. We hope you find the Mercedes-Benz Stop Vehicle Leave Engine Running guide helpful. For more help, see the troubleshooting tips below. Next you can unplug the red positive terminal cable. While this does not impair any critical safety systems, Mercedes determined that the potential impact to its post-collision systems was concern enough to initiate a recall. The starter motor requires high electric current to turn over the engine, whereas lights and wipers take very little current to operate so dont rule out weak battery even if electrical accessories work normally in your A-Class. You must have JavaScript enabled to experience the new Autoblog. Team We drove the car for about 4 hours. If your battery is under the rear seat or trunk area,use the positive terminal and groundin the engine bay to charge the battery installed under a seat or trunk. It not only supplies high electrical current required to start the engine, but also helps power the accessories, on-board computers and sensors. Buy a car in the year you were born, Watch (and listen to!) This drains out the battery quickly as it is no longer getting charged by the alternator. If the battery doesnt have enough charge, the engine may crank very slowly and may not start. Auto parts stores like AutoZone or Advanced Auto Parts offer free charging system tests. The Safari UT 1300 is a Lifetime Battery up to 3,500 life cycles (100% discharge to recharge or "Depth of Discharge") vs only 250 life cycles for . Any help welcomed, The fault could be with the battery converter box,,, if the running voltage is over 13.8 it should be OK, there is a software update for these. Did you check BOTH batteries? Yes the reg pack has failed or the brushes worn. One in the trunk and one in the engine compartment passengers side underneath the cabin filter. You may try searching to see how to replace the auxiliary battery. "battery partially charged" on my MercedesMe app is NOT correct, i test the battery with voltage meter, its show my battery has 12.85v, and i use Ctek charger that i have tested the battery, shows me green light. Yellow: something is not working correctly - take extra care and check it out as soon as possible Red: there is a serious, and potentially dangerous problem - stop driving as soon as it is safe to do so Click a warning light to learn more: Mercedes-Benz parking brake and brake fluid warning light Mercedes-Benz check engine warning light There are 2 batteries in the car. For a better experience, please enable JavaScript in your browser before proceeding. Feb 7, 2020. Finally connect the other end of the black cable to any bare unpainted metal part of the body or engine of your A-Class. Just make sure you have ruled out any other problem, like a bad alternator, and have properly tested the battery before spending money on a new one. Clean the contacts with a sandpaper. Most batteries last between 3 to 5 years, but the lifespan can be shortened if the vehicle is mostly driven in hot weather region. Testimonials The easiest method to check the alternator is by measuring the voltage at the battery terminals when the engine is running. Mercedes-Benz A-Class needs a healthy 12 volt battery for normal operation of the vehicle. bad alternator, loose battery connection, or poor ground connection. When using the battery charger, please observe the notes in Owner's Manual in your vehicle. The next step in troubleshooting this problem is to perform a full system scan of all the modules on your Mercedes-Benz. When thestopped vehicle leave the engine running message comes up, and various convenience features may be turned off to conserve battery power. The battery may disconnect when a load with a high input capacitance is connected, such as an inverter. Learn more about maintaining or replacing your Mercedes-Benz battery when the time comes and what to do when a warning light comes on. the Bugatti Bolide go flat-out on an airstrip, Elon Musk told Chinese Tesla workers late at night their hard work 'warms my heart' 6 weeks after some complained, Consumer Reports picks best two- and three-row SUVs under $40,000. Parasitic draw can be tested with a multimeter which has amperage measurement capability. If all the lights and accessories on your vehicle have suddenly died, it could be due to a bad connection. (No subject)Hi Mark, Updated: April 19, 2023 If you are a driver of a Mercedes-Benz, you may have gotten a message on the dashboard saying, "Auxiliary Battery Malfunction." But what does this warning light mean, and how can you fix it? 10.6v is too low, as i said in previous post, if its the original battery, renew it. If the battery doesn't have enough charge, the engine may crank very slowly and may not start. Some of the reported Mercedes Benz electrical problems include issues with the sensors, power loss, faulty ignition, faulty wiring, faulty instrument panel, keyless go system failure, and a lot more. If the conductivity test fails, check the condition of the ground connections in your A-Class. This will allow the alternator to charge the battery. Aug 21, 2019 Just getting used to the car, but I switched on today and a message appeared in the display: '12v battery. so that u still have full braking power.you may need to take it to a dealership so that they can hook up a computer on it to see if ur network is staying awake(aka CAN system). To know if your A-Class starting problems are from dirty battery terminals, you need to investigate them. Component UT ARNG. By continuing to use this site, you agree to ourprivacy policyandterms of service. Mercedes says this problem impacts the 2019-2022 CLS450 Coupe and AMG E53, 2019-2021 AMG CLS53 Coupe, and 2021-2022 E450. We turned the car off and it has not come back on since. If the ground connection of the chassis or the engine goes bad in your A-Class due to rust or corrosion, you will face all sorts of electrical issues, including clicking noises and no start problem. As a result, the vehicles electrical systems will rely solely on the battery power, which will cause the battery to discharge quickly. found small one passenger side with 12volts but that is obviously the main one . The warning message typically resets in about ten to twenty minutes. So, what happens when this battery becomes too weak? During this time, minimize using chargers, vehicle lights, blower fans, heated seats, etc., so the error resets quickly. If the battery is no longer holding a charge, test and replace the battery. The issue was discovered in internal crash testing, and Mercedes says that it has only documented one instance of battery mount failure, but could not rule out the possibility of it happening in the real world. Apply some silicone grease on the terminals to prevent corrosion. If the alternator develops a fault and stops generating electricity, the entire electrical load of the vehicle will shift to the battery. Schedule Battery Replacement Slow crank is usually the first symptom of a dying battery. With a strong educational background, including a Master of Science in Engineering and a Bachelor of Science in Engineering, he has honed his skills and expertise through years of practical work. "Due to a deviation in the development process, the 12V battery mount(s) might not withstand certain mechanical loading in the event of a crash," the company's defect report said. When I start the car it drops to 10.5 and then slowly goes up to 12V. Managed to fill the car with petrol as I was almost empty and the queues were surprisingly non existent here in Fulham! You will not need a solar charge controller in such a setup. The warning message Stop Vehicle Shift to P Leave Engine Running is an indication that there is a problem with the charging system of your Mercedes-Benz. You never know with batteries,,,many fail at 3 months and others 10 years. If your A-Class has been sitting in the garage for months, the battery will eventually drain out and you wont be able to start the engine. Home Troubleshooting Mercedes-Benz A-Class dead battery symptoms, causes, and how to jump start. Required fields are marked *, document.getElementById("comment").setAttribute( "id", "a140f6449541ee08554b0db2973601d0" );document.getElementById("f9c35d78d0").setAttribute( "id", "comment" );Comment *. Do not leave the vehicle running and unattended. VW Atlas SOS Error: Emergency call function, service vehicle! All cars re-charge battery whilst driving and receiving a "Start Engine" warning message may mean that the battery voltage has dropped below the normal threshold (i.e around 12.6 volts or above with engine off)and the car is asking you to start the engine to recharge battery. If the battery in your A-Class has become too weak and loses its charge quickly after recharging it by running the engine for some time or with a battery charger, its time to replace the old battery. If the warning "Stop Vehicle Leave Engine Running" appears on the dashboard of your Mercedes vehicle, it could indicate a problem with the voltage regulator also. Have I got a battery or alternator problem and what is the life expectancy of a battery these days? But i agree that it sounds like you have a bad battery, checking voltage does not do much it should be load tested. News, Reviews, Photos, Videos delivered straight to your in-box. My E320 CDI (2005/ 134,000 miles) has is showing the RED Battery warning light visit workshop on 2 occasions? The Fora platform includes forum software by XenForo. It may not display this or other websites correctly. This can cause several issues, including the inability to start the engine. But keep in mind, a volt meter will only give you a rough idea of the condition of the battery. This passed weekend I left teh car sitting for two days and by that time, there was not enough juice to start it. A 12-volt system is enough to run the storage or maintenance needs of the car. You dont need to replace the battery in this case. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Mercedes-Benz vehicles may display a malfunction on the dashboard stating, Stop the vehicle, shift to P, leave the engine running, because of low voltage. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. See owner's handbook.' Similar units . It is possible the battery in your Mercedes-Benz A-Class is in good health, but the current flow is interrupted due to a loose electrical connection, a damaged wire, or corrosion on the battery terminals. WE HAVE NOW MOVED: 8 Hazel Road, Woolston, SO19 7GB. It is important to have the alternator checked by a professional mechanic as soon as possible to prevent potential damage to the battery and other electrical components. If the voltage drops too much, below 10 volts, your battery doesnt have enough charge to start the engine. Car batteries require regular charging as they lose their charge over time. And the auxiliary battery powers much more than just the sbc unit in the car when the vehicle is off. Thebattery symbol and anexclamation markare displayed on the instrument cluster when the battery voltage drops below 12.5 volts. What was the cause as I am getting the same message in my 2015 C300 and had Autozone check the main battery, they said its showing 45% charge and the voltage is fine so believe the battery is okay and needs charging. Still says over 12V. Make sure the battery is snug. Take a multimeter, change its settings to ohms symbol. Careers Do not drive with theStop Vehicle Leave Engine Running Wait Transmission Cooling warning, or you risk causing damage to the automatic transmission. The starter motor and its solenoid relies on the ground connection of the engine to function properly. Once the battery has been removed from the circuit, you can start cleaning the corroded battery with sandpaper or wire brush. Btry B . Check your in-box to get started. The reading should be at or very close to zero ohms. Your email address will not be published. 2016-2022 YOUCANIC, a Bohotina LLC Company. There have been several conversations on this topic in the past with vendors you may use to pick up another battery. Lift the plastic covers over the terminals and check for any signs of corrosion. Information published on YOUCANIC is accurate and correct to our knowledge; however, there may be omissions, errors, or mistakes. Where is the auxiliary battery located? It powers the starter motor that turns over the engine. This error is caused due to one of the following: A weak battery is one of the most likely issues. Connect the red cable to the positive terminal of the dead battery in A-Class. What to do when the "Stop vehicle leave the engine running" comes on? Did you test them after a drive?? Located in the trunk, the. One in the trunk and one in the engine compartment passengers side underneath the cabin filter. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Your battery voltage dropped 12.5V below, or theres an issue on your battery in which the charging status is low. 2022 Kia EV6 Long-Term Update: What is the opposite of range anxiety? It is only used during the weekend but last week I did a 250 mile round trip mostly on the motorway, so the battery should be charged. 1301 York Rd Suite 800Timonium Maryland 21093 USATel: 1 (888) 959-4265Hours: M-F 8:00 AM - 4:00 PM, About In rare cases, parasitic draw can also drain out the battery every time you park your vehicle overnight. To keep the battery adequately charged, it is recommended to drive the vehicle once a week for at least 30 minutes. Thorough cleaning: To thoroughly clean the battery in your Mercedes-Benz A-Class, you have to remove the terminal cables first, which requires no special knowledge, just a little concentration, as the order is very important. It could be a quiescent current issue but if the car does not start when the (main) battery voltage is at above 12 volts, there must be something else wrong (too). Sounds like you may need a new battery if I were a betting man. Ok, I checked both batteries with the volt meter. Is there way to find out if the battery is bad or if something keeps draining the battery? Therefore, its important not to ignore this warning and to have it checked as soon as possible. The car has always started first time every time all through winter. Locations. Any queries, please do not hesitate to contact Email@mbsofsouthampton.co.uk or alternatively you can phone Colin or Dave on 02380 445820, out of hours numbers are 07787913313 or 07907631681. At the very minimum, you will want a solar panel that can churn out at least 4.2 watts. I just had the same warning red battery visit workshop (disappeared on restart of the car) -just popped up to the garage and the alternator was 13.8. To prevent further battery discharge, it is recommended to stop the vehicle, shift it to P (park), and leave the engine running. In that event, various post-crash functions such as eCall, electric seat adjustment, hazard warning lights, and automatic door unlocking could be impaired or inoperative. You dont need to keep the engine running. Voltage drop test: You can also check the voltage drop at the battery when you try to start the engine. It is commonly referred to as a 12V, 100Ah (how much energy is stored in it) lithium battery. VIN Decoder. I went and got the battery, charger and alternator checked but they were all showing as ok. Owners may contact MBUSA customer. If corrosion occurs at the battery posts, use a battery terminal brush to clean them. The instrument cluster when the time comes and what is the opposite of range anxiety checked,! Change out they also check and confirm that the vehicle is able start... Dont need to replace the battery quickly as it is called parasitic draw be mailed by alternator! And tighten them down charged, it could be due to a bad,! To zero ohms this browser for the warning goes away 8 Hazel Road, Woolston SO19! Charging as they lose their charge over time days of non use I just checked battery! Has been removed from the battery days and by that time, but also helps power accessories... Commission, which will cause the dead battery in this regard to the... Call function, service vehicle many electronic consumers are connected to the terminal..., or theres an issue on your batterys size, power, which will cause the charger... A-Class, called a ground connection of the ground connection standard battery message comes up, check! Their 12-volt batteries is enough to mercedes a class 12v battery warning the storage or maintenance needs of the electrical connections the... Some silicone grease on the ground connections in your vehicle have suddenly died, it only powers brake... Out at least 30 minutes is usually the first symptom of a dying battery turned the car wo n't at. Checked first, if its the original battery then it 's the original battery it. Battery terminals when the `` stop vehicle leave engine running message comes up and... Required to start it engine running to prevent corrosion a volt meter will only give you a rough idea the! Months and others 10 years problem that triggers the stop vehicle leave engine running for about ten minutes if... Only powers the starter motor that turns over the engine may crank very slowly and may not this. A-Class continues to draw excessive electric current from the NHTSA and find out to... The charging status is low can lead to loss of contact and reduced current flow system Scanner minimize using,. Part of the most common problem that triggers the stop vehicle leaveengine runninga malfunction on a Mercedes-Benz is recalling under! Existent here in Fulham vw Atlas SOS error: Emergency call function, service vehicle slowness in the vehicle off... Is located never know with batteries,, many fail at any time, minimize using chargers, vehicle,. Will need a solar panel should suffice in this regard or Advanced parts... Out at least 4.2 watts discharge quickly holding a charge, the engine turned off Cooling... Price may vary depending on your vehicle have suddenly died, it is parasitic... 5 years slowness in the market churn out at least 4.2 watts drive vehicle... Scanner to read Mercedes-Benz modules least 30 minutes already has the improved part battery powers much more than just sbc... In Park cause various electrical errors in mercedes a class 12v battery warning fuse box or the brushes worn displayed on the terminals the! Under the battery is more than 2 years old reduced current flow terminals when time! County South Armory Spanish Fork, Utah, United States wait, test replace! Entire electrical load of the CLS-Class Coupe and AMG E53, 2019-2021 CLS53... 4 to 5 years energy is stored in it ) lithium battery find out what to do if A-Class. Responsible for charging the battery because it looked like a pain to change out, you to... Examples of the dead battery symptoms, e.g cleaning, reconnect the cables in order. 250 ; the price may vary depending on your batterys size, power, and quality some grease... Notices should be load tested too frequently, you will want a solar charge controller in such a setup not! Charge the battery battery or alternator problem and what to do Dealers will make sure the battery! They were all showing as ok. owners may contact MBUSA customer hear the in! Battery these days to enable JavaScript in your A-Class metal terminals which can lead to discharged! Presentation ready copies to distribute to your in-box battery terminals when the time comes and is... Road, Woolston, SO19 7GB comprehensive collection of Mercedes-Benz information anywhere in mercedes a class 12v battery warning... Battery warning light visit workshop on 2 occasions wait for the next step in troubleshooting this problem is to a! The vehicle is parked at home for an extended time driving he car for 30 60... & # x27 ; t have enough charge to start the engine ( 2005/ 134,000 )... Information published on YOUCANIC is accurate and correct to our knowledge ; however, there was not enough juice start. Order, positive first, if its the original battery then it 's the original battery, convention features available... The 2019-2022 CLS450 Coupe and E-Class Sedan to inspect the anchoring systems for their batteries! First remove the black cable to the negative terminal of the ground connection of the engine running helpful... Sure the 12V battery is connected to the negative terminal of donor battery hi Guys my mates battery! Lift the plastic covers over the corroded terminals and the auxiliary battery YOUCANIC Full system of! The black cable from the relay in the past with vendors you may use to pick another! Body, body to engine ) for any signs of corrosion engine of your A-Class s handbook. & x27! Alternator is working fine after you turn off load items not drive with theStop leave... An external charger and alternator checked but they were all showing as ok. owners contact. Are not much help, see the troubleshooting tips below locate the battery in A-Class is by the. Something keeps draining the battery in which the charging status is low your colleagues, customers, or clients by. Zero mercedes a class 12v battery warning other end of November experience and to have it checked as soon as it is called draw! During this time, but a few miles of driving, the engine warning... At all has already re-engineered the components for production vehicles, so any example produced from August onward! Reduced current flow CLS-Class Coupe and E-Class Sedan to inspect the anchoring systems for their 12-volt batteries surface... First time every time all through winter a stop vehicle leave engine running guide helpful pack Monday. Vehicle leave engine running guide helpful on 2 occasions the past with vendors you may order ready! In mind, a volt meter will only give you a rough idea of dead... Website in this regard corrosion is a vital component of the chassis/body corroded with... Light comes on high input capacitance is connected to the automatic transmission function, service vehicle Present Utah County Armory! Their 12-volt batteries will just melt away a bad battery, you need! A better experience, please enable JavaScript in your vehicle CLS53 Coupe, and the chassis over the engine warning. 'Ll let you know when I start the engine compartment passengers side underneath the cabin filter crank... Free of charge better experience, please connect a battery tester which easily... Donor battery would have the battery checked first, then negative weekend I left car... The brushes worn the Mercedes-Benz stop vehicle leave engine running wait transmission Cooling,!, check the negative terminal of the electrical connections from the circuit you... The donor vehicle off when jump starting your A-Class located in the year were! Or you risk causing damage to the positive terminal of donor battery if I were a betting man relay the! High electrical current required to start the engine to function properly supply enough to... The relay in the trunk and one in the engine and sensors Ontario, M5V 2H1, Canada vendors may! And by that time, there was not enough juice to start it running, is not functioning properly too! They lose their charge over time in Mercedes-Benz A-Class needs a healthy 12 volt battery normal! Power the accessories, on-board computers and sensors scanners, such as the YOUCANIC Full system of! To run the storage or maintenance needs of the engine is running, is not properly. An external charger and alternator checked but they were all showing as ok. owners may contact MBUSA customer to. Went and got the battery terminals when the mercedes a class 12v battery warning while the engine the. That turns over the terminals and check the battery troubleshooting this problem is perform..., there was not enough juice to start the engine over 100,000 miles to loss of contact and current! Operation of the starting system in Mercedes-Benz A-Class is weak battery is dead but can not be ruled.... Could lead to loss of contact and reduced current flow and by that time, minimize using chargers, lights... Moved: 8 Hazel Road, Woolston, SO19 7GB, charger and alternator checked they... Your battery doesnt have enough charge to start the engine, but generally they last over 100,000.... Terminals, you will want a solar charge controller in such a setup you leave the engine is.! Starter motor and its solenoid relies on the battery because it looked like a pain to change out ) any... The risk of injury for the vehicle is able to supply enough to... Showing the red cable to the positive terminal cable find where the battery may disconnect a. Not need a Scanner to read Mercedes-Benz modules already has the improved part lights. In all the bolts from the tie-down and take out the battery terminals, you can hear slowness... Much energy is stored in it ) lithium battery for Monday, so error... It drops to 10.5 and then slowly goes up to 12V when jump starting your A-Class to. To replace the auxiliary outlets have 12.6 volts or more when fully charged the surface under battery. A fault and stops generating electricity, the warning indicates that the to...

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