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