Quote:
Originally Posted by BigCJLZ4
...but there is a 2cm gap between back roof and top roof, and a 2cm gap between top roof and windscreen.
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The latter might be based on a broken hall sensor on the right hydraulic ram in the coupling lock. There are 2 hall sensors mounted on the ram. Another source of these effects might be the 2 microswitches on both coupling locks in the boot. Hall sensors can be replaced by the cheap E88 (~10€) hall sensors instead of the very expensive E89 (240€) hall sensors. Only the wiring has to be adapted.
The windows won't close until the roof is in an open or close position.
You can try to open the brass screw on top of the hydraulic pump for a max. of 2 turns, not more!! Then you should be able to move the roof panels as well as the trunc lid manually with the help of a 2nd person to a close position.
But if there are any sensor issues, the panel as well as the trunk lid will not lock and you won't get it into a stable closed position.
There are some garage suggestions in the UK on the Z4 Forum:
https://z4-forum.com/forum/viewforum.php?f=44