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I have a 2006 Mercedes S500 (W221). This part is located in the trunk and is responsible for the automatic trunk closing.
Does anyone know if this part is repairable? Has anyone had a similar issue before? Do you think it’s possible to weld or fix the broken bracket, or does the whole unit need to be replaced?
Thanks in advance!
Second question: Is the part itself (the piston) is intact and not broken, nothing is missing from it, right? Like a circlip, for example?
All repairs range from anything from JB Weld to actual hot work.
What you can do is metal bond two washers to either side of this cracked flange after you force the crack shut. Then screw the ram back on and it should hold.
this is what JB weld/araldite is for
Last edited by Max Blast; Apr 17, 2026 at 03:30 PM.
just have a normal better manual boot opening system - faster, reliable and you can better control the rain flooding in and shorting out your TV tuner, Amp and reversing module
just have a normal better manual boot opening system - faster, reliable and you can better control the rain flooding in and shorting out your TV tuner, Amp and reversing module
Actually you can't because it won't stop where you stop it but rather ping right open. It's the hydraulic ram that gives it the ability to hold position.
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