Can you charge an auxiliary battery on a Mercedes?
Mercedes-Benz auxiliary battery is a rechargeable 12V 1.2Ah battery. The alternator charges the auxiliary battery when the engine is running. If the battery is still good, your only option is to remove the car’s battery and charge it with a 12 Volt Smart Charger, then reinstall.
What can cause an auxiliary battery to malfunction?
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.
What to do if your Mercedes auxiliary battery fails?
If this does not completely fix the problem, you may wish to take your car to a Mercedes service center or replace the whole auxiliary battery. Like the main battery, it may fail repeatedly if it has lost charge. Where is auxiliary battery located ?
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.
When do you know you have to replace your auxiliary battery?
If your car starts up normally but you get warning lights on your dashboard computer screen that shows ‘auxiliary battery malfunction’, that’s when you know you have to replace it.
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.
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 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.