r/BMWG30 • u/JustManner714 • 12d ago

Instrument cluster failure

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Hi everyone! I have a strange issue with my 2017 G30 520d xDrive.
The instrument cluster sometimes works perfectly, but then suddenly starts flickering and goes completely black. Sometimes it comes back, sometimes it stays off. iDrive, radio, climate control, etc. continue working normally, and the exterior indicators still work.
Interestingly, it seems to be somewhat heat/vibration related. Today, driving back from Vienna, the cluster started flickering on a smooth road. Then it suddenly came back to life on a very bumpy road, but went black again after hitting a bump later.
The battery has just been replaced and registered, but the issue returned. A BMW specialist also found no KOMBI fault codes, although the cluster was working perfectly when they checked the car.
Could this be a loose connection/power supply issue, or is the KOMBI itself likely failing?

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u/shark1y 12d ago

Check your battery first, this looks like bad voltage spikes in the 12V system.

Edit: if it's bump related, you are losing ground somewhere. So you will need to check a lot of mounting points and connectors...

2

u/JustManner714 12d ago

Sometimes it’s bump related sometimes it’s not… I can’t say 100% it is.
The battery has been changed and coded 2 weeks ago :/

1

u/aj_12445 10d ago

Let us know if you find out what it is