What is auxiliary battery malfunction on Mercedes?
If this auxiliary battery develops a malfunction, it will show up as an error message on the dashboard. You will know that it’s the secondary battery that is at fault, because the car will still turn on and some functions will still work. The auxiliary battery does not affect the car’s mechanical functions.
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.
Is the auxiliary battery the same as the main battery?
Not correct, certainly not on a 2005 W211. As posted before the AUX battery supports the main (systems) battery should charge drop critical. The main battery supplies power to ALL functions. The function of the two batteries is different from the system in the R230, where the front mounted battery only powers the starter.
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.
When does an auxiliary battery malfunction on Red Ken?
So, 8 weeks after the 3-year warranty expired, Red Ken decided to invoke the Law of Sod and throw up a “Auxiliary Battery Malfunction” warning.
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.
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.
So, 8 weeks after the 3-year warranty expired, Red Ken decided to invoke the Law of Sod and throw up a “Auxiliary Battery Malfunction” warning.