steeven001

Hey all car is a 2009 C300 4Matic has rear LED turn signal lights.

I had the bulb board and connector burn out on the right side so I replaced those. Now the problem I'm having is the right LED signal blinks once or twice then switches to the bulb above the LEDs (I think this is the marker light) and uses that for a signal instead. It does this every time I signal right and I'll get the check rear right signal error on the dash. I don't see any blown LEDs.

Any ideas?

RLE

The unit you installed shows as open to the lamp out sensor. The switch to the other bulb is normal and will continue until you correct your connections.

dcjwlee

Your solution:

https://mbworld.org/forums/c-class-w...led-turns.html

RLE

True, but a little pricey rather than just correct an installation error.

Thanks for mentioning it, though.

steeven001

I don't understand what you mean. The parts I replaced have the same part numbers as the originals and I did each wire one by one not to get them mixed up.