Electrical System Related Problems of the 2005 Mercedes Benz S500

Table 1 shows four common electrical system related problems of the 2005 Mercedes Benz S500. The number one most common problem is related to the electrical system (three problems). The second most common problem is related to the alternator/generator/regulator (two problems).

Table 1. Electrical System related problems of Mercedes Benz S500


Recently reported Electrical System problems of the 2005 Mercedes Benz S500

The Electrical System problem

While driving at approximately 45 mph my instrument panel went black. I could not determine my speed, time of day fuel usage, miles traveled, or signal lights. I did not buy the vehicle from a mercedes dealer. I called a dealer about a recall. He stated that there was a recall but it had expired.   Read details...

The Alternator/generator/regulator problem

Blower motor stopped working and remained intermittent through July 2015. Mercedez benz of st. Louis replaced blower motor and regulator/controller. Within days of getting car back the blower continued to be intermittent. It would work for days or weeks and then stop for 1-3 days.   Read details...

The Power Door Locks Not Working problem

Electronic dash instrument cluster went black and the speedometer could not be seen and all other driver information on the remaining gauges were also not visible. The door locks would not operate ,the trunk would not open and the seant would not move in any direction.   Read details...


Electrical System related problems in other Mercedes Benz S500 model year vehicles:



S500 Service Bulletins
S500 Defect Investigations