Hi All. My roof has randomly decided to play up. 2 days ago opened and closed without issue, today - starts to open, roof fault light pings up and roof stutters and pauses, light goes out, roof continues and repeat, the worst point being the final closing of the boot lid, which start stops and takes an age to finish closing and it’s the same on closing. Taking finger off the button seems to help when it stops, but not much and not always! It will open and close but is very slow and start stop! Any
When we’ve had stuttering motion, especially on the bootlid closing it’s always been the rear microswitches in the boot that have been faulty. A diagnostic check on our BMW ISTA has also shown up what the fault is. We’ve repaired quite a few of these now and had every fault going, low battery voltage, roof relays, roof motor in water, boot microswitches, roof shell hall sensor and microswitch wiring broken.