Q: Electrical system malfunctioning - 2005 Mercedes-Benz C55 AMG

asked by on

I’m having trouble with my electrical system, and my car has been doing some weird things. When I went to start it up yesterday my ignition would turn on and then turn off before I had a chance to turn the key all the way and start the car. Then the radio would stop playing through the speakers intermittently. But then it would come back on when I restarted the car. Sometimes the radio would quit working along with the gauge cluster needles and turn signals. But the light on the cluster stayed on. I turned on the radio and it worked, but I had to restart the car to get my gauges working again. Do you know what’s wrong here? Do you have any solutions?

Hello. The first thing I would check is to make sure that the battery is in good condition. A worn or old battery may not be able to properly power all of the accessories that your luxury vehicle is equipped with, and may cause them to malfunction as a result. A faulty voltage regulator or alternator can also produce similar symptoms. It may also be possible that there may be some sort of electrical issue, perhaps bad wiring. As electrical issue can often be difficult to diagnose, especially for luxury vehicles, I would recommend you have a professional technician inspect the electrical system so that this can be repaired properly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Electrical system malfunctioning - 2005 Mercedes-Benz C55 AMG

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Removing the car battery from a 2012 S63 AMG

Hi there. There will be a bolt that is attached to a wedge that is holding the battery in place. The bolt will be next to the battery and the black box. You may have to remove the black box...

Q: Dashboard going out

Hi there. Since your issue is intermittent this would lead me to believe you are experiencing a bad connection behind your dashboard. A loose connection between your light bulbs and sockets will cause this problem along with a fault in...

Q: Key not turning all the way off

Sounds like you are having a problem with the shifter. The shifter and the key work together and have a safety mechanism that keeps you from turning the key back when it is not in park. This way you avoid...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...