The overvoltage relay has NOTHING to do with the BATTERY light staying on!
IF the battery light remains on after starting then the alternator is at fault!
The other lamps are designed to be dim with key on only as a BULB check, making sure that they are ABLE to come on bright if there is a malfunction.
THE ABS lamp stays on bright until the charging system operates!
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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
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