W212 Rear Tail Light not working - Help!

[mike n helen]

I noticed the other day that the driver side rear tail light wasn't working despite not having a lamp warning failure on the dash. The light on the boot lid is OK so I assume it's not the fuse if the fuse is common? I realised today when I went to change the bulb that they are in fact LED light clusters which don't appear to be serviceable.

Can anyone help me clarify the following please:-
1) If the lamp isn't working, should I get a warning on the dash?
2) Are the fuses common for the tail lights on both the boot lid and the car itself, and where is it, I know there's a fuse box in the boot but no idea which fuse to check?
3) Is this a common fault and are the lights serviceable or is it trip to main stealers for a new one?

Thanks, Mike

 

[Marku]

You would have thought so pull the plug out of the other side and see what happens. As for fuses nothing in the manual? If everything else is OK then it is replacement but it would be unusual the life of these units is long.

 

[whitenemesis]

Light out should always bring up a message. You sure you're not looking at the rear fog lamp?

 

[KillerHERTZ]

Light out should always bring up a message. You sure you're not looking at the rear fog lamp?

Or you dont have the right only/left only selected when you checked?

 

[mike n helen]

Its definitely not the fog lamp I'm looking at, it's the tail light on the main light cluster rather than the one on the boot which is off. I'll try pulling out the plug on the other side at the weekend and see if that throws up a fault message. I am starting to wonder if there is an ECU fault as sometimes when I start the car, the parking sensors don't work and other times they are fine. Do these share the same ECU does anybody know?

 

[mike n helen]

Its definitely not the fog lamp I'm looking at, it's the tail light on the main light cluster rather than the one on the boot which is off. I'll try pulling out the plug on the other side at the weekend and see if that throws up a fault message. I am starting to wonder if there is an ECU fault as sometimes when I start the car, the parking sensors don't work and other times they are fine. Do these share the same ECU does anybody know?