The missus was driving to see a client this afternoon and without warning the cabriolet roof on the A4 decided it was going to open up on its own.
No pressing or knocking of the release button at all.
She pulled over and turned the engine off for a few minutes hoping that the system would reset itself and tried again, but as soon as the engine fired and the car did its usual run of sensor checks, the roof opened itself up again on its own.
I've had a fiddle with it too and it took numerous attempts to get the roof to close again. It would whirr and move a normal for a few seconds and then freeze completely. I'd wait a few seconds and then try again and I'd get a few more seconds of whirring and movement before it would stop again.
In the end I've managed to get it closed and then intend to remove the fuse while I sort it out.
Does anyone have any ideas as to what is going on?
I've seen the various repair guides on this site and I'm thinking its probably something like the dirty commutator thingy, but does anyone else have any ideas?
As you can imagine I'm pretty worried about the roof flipping up where we're on the motorway at speed and causing serious damage.