Follow these steps to view it: Once you start your vehicle, the voltage level should read between 13.8 volts and 14.8 volts. For a better experience, please enable JavaScript in your browser before proceeding. Wait twenty minutes after the key has been removed from the ignition. Now is also a good time to check for a parasitic drain when the vehicle is off. There are two electrical contacts on the voltage regulator that wear and become shorter over time. After starting car it slowly goes from 13.5V down to about 12V and then I shut car off because I don't want to charge battery again. JavaScript is disabled. Stopped for a red light and the engine started sputtering and I pulled over and shut it off. well, the service items were changed, now to order a battery. This article applies to the Mercedes-Benz E-Class and ... Why is There a Red Battery Message Saying Visit Workshop? You are now reading current. 2a) Now start the engine, and watch the UB value rise as the generator operates. I have an 02 Mercedes Benz E320 4matic. I'm trying to figure out why my interior lights is dimming with a strobe effect and notice my RPM is fluctuate by little (vehicle have 105k miles) and when it does the car shakes a little. This article applies to the Mercedes-Benz E-Class and E-Class ... Why Does My Car Die Right After Startup? It's located in the engine bay against the firewall. The battery control module is located in the trunk next to the battery and spare tire. 86 meters long and 1. part number: a1665420418 Mercedes E Class W212 engine warning light - this light will stay illuminated if there is a malfunction within the engine after start up - we would advise you to use the iCarsoft MB V1. Can't seem to get to that "UB" screen. Hyperlinked in the discussions section at the bottom of the article is a list of fuses/relays showing their associated circuit and amperage rating. Drove carefully in 1st gear for about a mile. I've read forums and watched youtube videos, and every day for two weeks now iv'e tried this and it doesn't work. The battery control module communicates on a CAN (controller area network). I have asked them to check battery voltage. The voltage regulator is described more closely in Step 4. It may not display this or other websites correctly. My car would not start this afternoon, after a 40 mile round trip - mainly mway. If the voltage level remains below range, then you have a good indication of a faulty alternator. Then remove the nut next to the windshield washer fluid cap. If you need help read this article on How to charge a Mercedes-Benz the right way. If it does not rise, you have a generator problem. [Baffled], CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD. MBClub UK is in no way affiliated with Mercedes-Benz, DaimlerChrysler or any of their respective trademarks. MBWorld Featured Car of the Month Contest, CL55 AMG, CL65 AMG, CL63 AMG (W215, W216), E55 AMG, E63 AMG, E43AMG (W210, W211, W212,W213), S63 AMG, S63 AMG 4Matic, S65 AMG (W222, V222 LWB), S63 AMG 4MATIC Coupe, S65 AMG Coupe (C217), Convertibles (A217), MB Coupes & Cabriolets Vendor Classifieds, Mercedes-Benz SUVs, Trucks, Vans, Diesels, Other, MB SUVs, Trucks, Vans, Diesels Vendor Classfieds, Classic, Vintage Mercedes-Benz Vehicles, Other Cars, Classic, Vintage MB Vehicles Vendor Classifieds, General Discussion of Mercedes-Benz Classics, Wheels, Tires, Suspension & Brakes Forum-Sponsored By Tire Rack. Why Does My Battery Keep Dying? The red ... Why Does My Car Die Right When it Starts Up? When it is started the voltage seems to go down and I took the alternator out and had it tested at advanced autontoday and it … A diagnostic scanner must be used to communicate with the control module to test it for errors. Check the earth strap is secure/has good contact against the battery AND the body/chassis. For a better experience, please enable JavaScript in your browser before proceeding. Well the batteries are very important in our cars,in your case I would suspect it is the battery in the boot,starting is a joint effort by the batteries,as far as I am aware the back battery heats up the glowplugs the front battery cranks the starter,just a month ago I had problems with batteries now my front battery was the original,10 years old,so I thought it had to be that as I knew that the back one had been changed about 4 years ago,I used Tanya batteries and bought a replacement,on taking the old battery out I tested it and found it charged but I put the new one in and it was being charged at 13.2 amps so the alternator was good,,things were still not right so I bought a new rear battery,this has made a big difference,things electrical in the car are working so much better,a real curved ball that this new battery may have cured is that my car has occasionally stuck in a low gear so plenty of revs no speed,it seemed to dislike a fast approach to a roundabout the slow down then the acceleration away,I have used that road road 6 times now and the car has not stuck in gear I should note no faults registered by star,the other give away is what happened to you I could drive about 20 miles and stop and have the radio on and it would shut off after about 5 mins,all this points to the back battery. I'd check the voltage with an old fashioned analog voltmeter. There is a very easy way at the cluster to verify the operation of your generator and the associated voltage regulator . Mercedes c class c22 cdi bluetech amg line premium plus Location lighting not working. I have the same problem and, the same problem with my 03 W209. Use a good quality battery charger (I use a CTEK) to bring the battery to 100% charge. A reading in this range indicates your alternator is correctly charging your batteries, and your batteries are holding the charge. I too have 2 CTEK Chargers and regularly connect them up to both our cars to condition the batteries even though they are starting the cars perfectly well.

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