I'm getting warnings on every light on the rear of the car although it looks like they are all working. The only lights not working are the tag light. I realize that if the readings don't make the computer happy then I'll get the warnings. Would the tag light make them all show up as a fault or do I need new rear tail light assemblies?

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Jim

I think that there may have been a TSB a few years back for the taillight grounding. I think that MBZ may have even sold a ground kit for those.

The tag lamps will cause that, try checking the circuit and work backwards from there.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)