Skip the auto shop - Our mechanics make house calls

Q: Intermittent malfunction of electrical components - 2007 Mercedes-Benz SLK350

asked by on

Ocassionally, after I have turned the key into the first position, most of the electrical components of the car stop working. These would be the AC, blinker, speedometer, tachometer, power windows and the gauges. This doesn't happen all the time, but when it does, it would correct itself after I restarted the car. How can this be fixed?

The ignition switch can fail (internally) in this fashion, failing to make proper electrical connections sporadically. Have the ignition switch checked, and if necessary, replaced. A YourMechanic professional can inspect your vehicle and replace your ignition switch.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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!
  • Home
  • Questions
  • Intermittent malfunction of electrical components - 2007 Mercedes-Benz SLK350

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: Tachometer doesn't work, and speedometer not accurate

The instrument cluster circuit board, which is part of the cluster assembly, may be the cause of the problem. If so, the cluster may need to be replaced, and the speedometer sensor will need to be checked or replaced. If...

Q: Car won't hold battery charge

Hello. If this occurred right after the radio was installed, then you may have an issue with the wiring to the radio. The radio should be taken back out and the wiring should be checked for any breaks or shorting...

Q: Engine hesitating during startup

Hello. It is not normal for your engine to be at 450 RPMs. This could be an indication that there is a loose or disconnected vacuum line or a vacuum leak from the intake. It is also possible that there...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.