Hi - first post here - trying to help out my girlfriend with her Z3 3.0i...
The symptoms are that the powered roof stopped opening.
However it will still close. If I undo the bypass screw on the reservoir and open the roof manually, then close the screw back up tight, shut the boot, ignition on, foot on brake, press 'roof close' button it does as it should and closes all the way.
Weirdly I noticed that if I press 'roof open' button when it's already open it also closes.
The fluid in the reservoir is almost up to the correct mark when the roof is in the open position.
I have swapped the relays near the reservoir around and it made no difference.
The brake pedal triggers the brake lights.
The microswitch above the passenger window makes a convincing click sound.
The cable running back through the mechanism on the passenger side appears intact.
I popped the rocker off the 'roof open/close' switch and operated the microswitches manually and it did the same.
Any thoughts? Is there some kind of reset procedure I can do on a Z3?
Thanks in advance!!