classik

Hi Mercedes Brothers & Sisters!

I have a W202 Mercedes, 1997 C200 Classic / Elegance, Petrol version.
It's covered 200,000 miles but overall is fairly trusty.

Recently the car battery light has started coming on - intermittently.
Definitely more likely to happen upon "cold" - first usage of the day.
I have noticed no changes with the performance of the car.
The battery was replaced many years ago and so was the alternator.
Upon on basic visual inspection the drive belt and tension look OK.

To be sure, I took the car to my local auto repair centre.
They tested both the battery and alternator - suspecting it's most likely the alternator.
Surprisingly the voltmeter test showed no issues with both.
They then recommended posting on a forum to see if anyone with experience had advise upon the matter,
as it could be something minor.

If anyone can help it would be much appreciated.
Thanks,

Joe

Plutoe

I think they are wrong--battery light on =low voltage----where does replacement voltage come from and did they check the voltage regulator?

classik

ok, makes sense. no - they did not check the voltage regulator. fortunately that's a cheap fix - so i'll give that a go. many thanks!