Issues With The Roof: Loud Thud & Drop When Opening The Roof

[BMWStyle326M]

Hello to fellow members, I have a 2009 BMW E89 Z4 sDrive30i.

I have an issue when opening the hard top roof. When the back piece comes on to the top piece there seems to be a loud thud and looks quite rough. Has anyone faced this issue and what could most likely be the issue?

Thanks in advance, any help is very much appreciated.

 

[B21]

The roof support damper strut has weakened / failed ..not the boot lid strut.. needs some ingenuity or the BMW special tool to fit a new pair of struts..with the tool its a simple job..

 

[BMWStyle326M]

The roof support damper strut has weakened / failed ..not the boot lid strut.. needs some ingenuity or the BMW special tool to fit a new pair of struts..with the tool its a simple job..

Hihi, thanks for the swift reply. Do you happen to know which is the strut responsible?

Is it No.2, No.3 or No.4 in the photo below?

 

[B21]

Its 5 in this diagram its a damper not a hydraulic actuator

 

[BMWStyle326M]

Thanks for the help! Will try to look for a compressor to install it. The special tool is too expensive!

 

[B21]

Thanks for the help! Will try to look for a compressor to install it. The special tool is too expensive!

I have one..yes it was expensive! -