Alternator/generator/regulator problems of the 2002 Mercedes Benz C230

Two problems related to alternator/generator/regulator have been reported for the 2002 Mercedes Benz C230. The most recently reported issues are listed below.

1 Alternator/generator/regulator problem

Failure Date: 05/14/2007

My 2002 mercedes C230 kompressor keeps draining the battery. I have had the battery and the alternator replaced. No one, including the dealer can determine what is causing the drain. Online forums from mercedes outline that this is a regular issue that mercedes is aware of, but no recall has been issued.

2 Alternator/generator/regulator problem

Failure Date: 05/15/2006

Error message appearing on my instrument cluster display stating that "under voltage consumer defective!" along with a "battery/alternator visit workshop" error. Taking the car to a service station indicates that the voltage regulator is faulty. Currently there is a recall for all mercedes models except mine in the USA. Eventually the battery became discharged.


Other Electrical System related problems of the 2002 Mercedes Benz C230



C230 Service Bulletins
C230 Defect Investigations