Rear brake lights, speedometer and fuel gauge all stopped working

Tiny
1TBERRY
  • MEMBER
  • 1998 MERCEDES BENZ C230
  • 187 MILES
The gas meter, speedometer and back brake lights all went out. Checked the fuses but they are all good. Trying to find the next step.
Wednesday, June 20th, 2018 AT 1:46 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

This sounds like you lost one leg of the ignitions witch module but to confirm the issue here is a guide to help you test to see if you are losing power along with the wiring diagrams to help you see how it works:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken
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Friday, June 22nd, 2018 AT 11:35 AM

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