Originally Posted by was55amg

Hello,

I have been working on my trunk not opening or closing using either the remote, trunk switch or interior switch. I have browsed the whole internet and checked all the fuses, wires, pneumatic lines etc....I have even got another PSE pump that I replaced, the result is the same: The trunk won't open. All the other functions related to the PSE work (soft close, lock/unlock, etc...). I have the W215 Mercedes mechanic manual and it says that after replacing the PSE pump, version coding must be done via STAR Diagnosis. (see attached).

I would have to go to the dealer for that but was wondering if any of you can confirm this would be the fix for the trunk to work?

Thanks