Odd roof problem.

[Firejim5]

I'm trying to sort out my roof, it works up and down no problem with the ignition key on, engine off. The roof won't operate at all with the engine running.
Any pointers where to start before I pull it to bits??
Cheers,
Jim.

 

[Number5]

Firstly, don’t get side tracked into taking it out or messing with the hydraulics, motor etc. If they weren’t fine it wouldn’t operate on ignition only.

Your problem is purely sensor or roof ECU control related. I assume with engine running it won’t even unlatch, so I would maybe consider if the windows are an issue.

Does it make a difference with engine running but both doors open (if the doors are open it doesn’t need to do the short window drop, so this may allow the sequence to continue past the issue that’s stopping it)

Secondly. If the roof is stopped mid position and then the engine started, will it continue to open or close ?

Please clarify if it’s in unlatching or not before I go any further.

 

[Firejim5]

With the engine running the roof buttons are totally dead, no combination of doors open/closed makes any difference. The roof doesn't unlatch at all.
Engine off, ignition key on the roof works perfectly.

Jim.

 

[ph001]

Not heard of that one before. Do you have any kind of aftermarket roof module installed? The only thing I can think of is that it’s thinking you are actually moving, which would of course prevent roof from operating. Speed signal comes from rear nearside abs sensor though so hard to imagine how that could be the cause.

 

[enuff_zed]

Does everything else work ok?
Just wondering if it could be a faulty signal from the ignition switch?

 

[Firejim5]

As far as I'm aware everything on the car is standard BMW. Every thing else works perfectly except for the roof not wanting to play when the engine is running.
When I get a chance next week I'll have a look at things and get a diagnostic done and see if there are any codes.

Jim.