Brownwolf

Hello to all! I am new to forums and first time MB owner as well. We have a 2003 E500 and recently the trunk release button and remote stopped opening the trunk lid. I have checked the fuse in the trunk and also the wiring harness with no damage observed all wiring is intact...what or where do I go from here to diagnose this issue? Any suggestions or direction would be greatly appreciated since I do not care for the dealership "experience" and pricing...

Plutoe

You have a fault in the central locking system------use the mechanical key to open and replace the trunk lock actuator!

MJ50

moved to W211 forum...

kschiu

Check if your 3rd brake light is working. IF not, it may be a broken ground in the wiring harness in the trunk.
A lot of people has this problem and you need to fix the broken brown ground wire in the wire loom.