warning light

[BLACK 330]

Hi keep getting warning light for rear right tail light but nothing wrong. all lights working.

 

[Bayn46]

Yea, I have the exact same problem. Took the light housing apart and the earth wire is slightly burnt. Apparently it's a common problem with the car.

On that note, when I turn my lights on the warning goes away :dunno:

 

[Sankekur]

There is a DIY somewhere, on how to fix this. The basics of this it that put another wire in parallel to the existing earth wire.

Edit: Here's a link:
http://www.bimmerforums.co.uk/forum/f3/e46-saloon-rear-light-error-fix-t49882/

 

[Pr0PheT]

Its a common problem there was a service buletin 630306 for that, on my moms car they replaced the rear light clusters twice under motorplan instead of doing the fix, once out of motorplan I had to do the fix which has solved the problem.

Check this link (ignore the misleading title, scroll down to the post by romeomike)

http://www.bimmerwerkz.com/forum/3-series-e46-e90/help-tailight-harness-burnt-63781.html

 

[msm]

+1 on all ground/earth wire.

There is also a small probability that it could be an old (working) bulb causing the problem too. As the bulbs age, their resistance increases and they appear to be detected as blown, even though they are working.

If the warning light is on one side only, swap all the bulbs over and then check what happens.

However, 90% chance that it is the ground wire.

 

[lucian]

I've been driving with that stupid light on for over a year now. My car's tail-light fittings do not have a lip to clip on an extra earth wire.
Guess I should just solder it on and see, or maybe try the light-bulb swop and see.