Hi, I was wondering if anyone could help shed some light on an issue with my A250e. It’s a 2020 plate, no remaining warranty. Over the last two weeks or so I’ve had little things pop up like speed assist not working, crash sensors not working etc but just put it done to cold weather. Today I had a red warning come up to say 12v battery critical, stop driving. I’ve had the Mercedes Me tech out today who said the 12v battery isn’t being charged but the battery itself looks fine so needs to go back to Mercedes. He said something about the electrical system not working and it not being like a typical alternator because of the car being hybrid but said he’d never seen it before. To say I’m shitting myself about the repaid bill is an understatement! Has anyone else had anything like this? I’ve scoured the net but can’t find anyone reporting anything like this!!
Cheekymonkey
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9,084 Posts
It’s a DC-DC converter.
Possibly gone faulty, but you need a diagnostic code scan to further diagnose.
See
Possibly gone faulty, but you need a diagnostic code scan to further diagnose.
See
Joined
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9,084 Posts
@Cheekymonkey any update?
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