Mercedes battery issue I bought the car used 3 years ago and there haven't been any problems until now. . Customer: Hi, my 2018 CLA 250 Mercedes had battery issues, and the car wouldn’t start. Customer: 2008 Mercedes ml350 4matic w164. Recent electrical work: Recall any recent modifications or additions to the car's electrical system (aftermarket accessories, etc. I had the battery load tested today and it was fine. Had the main battery checked and volts were below 12 so replaced it with a Mercedes battery. Customer: 2007 Mercedes SL550. Sep 5, 2019 ยท Red battery light on warning system came on about a week ago. That was easy enough, I replaced the battery in the truck and that corrected the issue, except the battery light stayed on. Because the battery felt warm I decided to take it out of the vehicle because it was trapped in the garage. Battery age: Check the battery's manufacturing date, usually a sticker on the top. ). Customer: Hi, my 2018 CLA 250 Mercedes had battery issues, and the car wouldn’t start. Also to interject the A/C will only blow on low speed. I bought a new battery and replaced the old one. Mechanic's Assistant: The Electronics Expert will be able to help with that. Red light still illuminated. We then replaced the voltage regulator module and the auxiliary battery just to try and eliminate all problems. However, now it says it is in some kind of transmission lock code and needs to be taken to the dealer. 272 Car alarm keeps going off randomly. Narrowed it down to fuse number 9. 12. The charging system is putting out 13. 7V under load. Customer: I have a battery parasitic drain issue on my 2009 C300 but it is not under warranty. I am hoping someone could give me suggestions on methods to reconnect my negative terminal back without causing Customer: Have a battery/charging issue with my 2008 Mercedes SL550. until I figure out the cause I have to disconnect negative terminal to avoid it sounding off, I don’t like dealing with the battery because it sparks. Request a thorough battery load test, not just a voltage check. I was having issues with the passenger vanity mirror light not working most of the time but that's been going on for years now. Regardless what the test is showing this is where you need to focus. Was driving fine, but Battery light was on and I could not lower the convertible top. If the auxiliary battery was installed correctly and was a Mercedes part and new then the issue has to do with the connections at the main battery. May I pass your message along to them? Customer: Make that a 2009 Mercedes sl550 Mechanic's Assistant: Is there anything else the Electronics Expert should know before I connect you? Rest assured that Customer: Hi, my 2018 CLA 250 Mercedes had battery issues, and the car wouldn’t start. 7V at idle and almost 14V with a little rev on the engine. A battery older than 2-3 years might be reaching its end. Customer: I have an 07 Mercedes c280 with a battery drain issue. I have seen these main batteries test okay and still cause this issue. gtlw sqptqe qavsm kyt sdppaz msdmy gloe rpj hituz jplp