Instrument cluster does not work

MIKE-RAY

MEMBER
2000 MERCEDES BENZ C280
4 CYL
2WD
AUTOMATIC
110,000 MILES

Hello,

The "warning" lights such as check engine, etc, all light up, but they stay on. The clock, mileage, etc, (I believe those are LCD panels) do not come on. The gauges do not work either (fuel, temperature, RPM, speedometer). Car starts and appears to run fine. Just to make sure it's not a voltage issue, I've checked the battery and that is fine as well (not low voltage). Someone in another forum stated that it was most likely the "body control module" but I can't find much if anything related to that. Any additional information/guidance is greatly appreciated.

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

Hello,

I have seen this in the shop and had to replace the instrument cluster with a used/rebuilt. here is a video of the job being done on a different car and diagrams below to show you how on your car:

https://youtu.be/_HEC44xENxw

Check out the diagrams (below). Please let us know what happens.

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Monday, September 23rd, 2019 AT 12:54 PM

MIKE-RAY

MEMBER
2 POSTS

Hey thanks Ken,

So was the comment (in another forum even) remotely accurate when they stated that the "body control module" would be the problem here. Thank you very much for the diagrams and video. I already had the cluster removed. Just performing a manual check on connectors, etc. Wanted to make sure that the motors associated with the gauges weren't somehow causing the issue either. So I reconnected the instrument cluster, but the problem still exists. So you think replacing the cluster would resolve the issue? And then, I can buy an instrument cluster, but I'm going to assume I have to take that to possibly either a Mercedes dealership, or at the very least Mercedes repair shop to have the data (miles specifically) transferred from the old one to the new one.

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Monday, September 23rd, 2019 AT 3:58 PM

KEN L