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w211 Power Bootlid gone mad

Alps

MB Enthusiast
SUPPORTER
Joined
Nov 29, 2002
Messages
7,658
Location
London\Essex
Car
E63s s213 2019, E55 2004 Silver-SOLD, E63 w212 Weistec AMG-SOLD, E55 2004-SOLD, C36 1997-SOLD
The Power bootlid function has always been a bit hit and miss, sometimes didnt shut properly and opened halfway when shutting, sometimes needed a hand shutting completely .

When at one of the cars shows my bootlid started to get a bit over excited and started opening and shutting at twice the normal speed, narrowly avoided taking my arms and head off a few times!

after a bit of research all things pointed to the Trunk control unit, where MB brought out a revised part with updated software, STAR was showing open relay and drilling down pointed to the control unit.

old unit a2118204526, new unit a2118703026.

after finally sourcing a 2nd hand unit, took 10 minutes to replace, all back to normal again, and noticeably smoother opening and shutting.

might be helpful to anyone who has similar issues going forward
 
Last edited:
Yes the CL's boot sometimes has a mind of it's own. A totally different mechanism I think ?
 
Thanks for the heads up Alps.

Lucky my bootlid works with no problems at the moment.
 

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