What happens when an auxiliary battery goes bad?
An auxiliary battery malfunction can cause your vehicle’s electrical systems and operations to display errors. These include your entertainment system, GPS, PDC sensors, radio, and start/stop functionality. You will start to notice vehicle safety features like Blind Spot Assist, Lane Keeping Assist, and similar lighting notifications fail to …
Why is my Mercedes auxiliary battery not working?
The main cause of this problem is generally attributed to a faulty voltage converter and you can also get a computer error message reading “Stop vehicle shift to P leave engine running” when the auxiliary battery begins to malfunction.
What to do if your aux battery malfunctions?
Click to expand… Have dealer check VMI to see if there any outstanding Service Campaigns (i.e.: 2009110003, 2010030010) for your VIN, if so repair is free even out of warranty. No open campaigns, correct battery/correctly installed need to have someone pull fault codes using MB diagnostics, may be as simple as clearing stored codes.
Why does my aux.battery keep going dead?
Sometimes new batteries are bad out of the store because they sit too long and one of the cells go bad so you might have voltage but once you do a load test, it will show that it’s dead. The voltage of the aux. battery was 12.4 when I installed it. I do have a code scanner, no stored codes.
What does it mean when your Mercedes says auxiliary battery malfunction?
Many Mercedes Benz owners have noticed that they will sometimes get an occasional warning message on their dashboard stating “auxiliary battery malfunction” which can be quite scary especially if it happens while you’re actively driving.
What happens when the auxiliary battery goes bad?
If this auxiliary battery develops a malfunction, it will show up as an error message on the dashboard. The warning will be generic, but should feature a small battery symbol.
Click to expand… Have dealer check VMI to see if there any outstanding Service Campaigns (i.e.: 2009110003, 2010030010) for your VIN, if so repair is free even out of warranty. No open campaigns, correct battery/correctly installed need to have someone pull fault codes using MB diagnostics, may be as simple as clearing stored codes.
Sometimes new batteries are bad out of the store because they sit too long and one of the cells go bad so you might have voltage but once you do a load test, it will show that it’s dead. The voltage of the aux. battery was 12.4 when I installed it. I do have a code scanner, no stored codes.