It's not a common problem, but it is one that other people, including myself, have experienced. I don't think anyone has been able to ascertain the cause, but it is a bit disconcerting knowing it might happen at the wrong time.
There have been a couple threads on here and MCO about it.
-- '03 S B/W
Magnaflow; Cibie lights; Madness intake; white 17" Team Dynamics; H&R springs; Helix swaybar; custom stripes
In my case, there was no one touching my key... it was in the ignition.
Odd thing is that the windows rolled down half way at the same time that the sun roof popped up and rolled back about 1/2 way. I seem to recall that all windows started/stopped moving at the same time.
I've had this happen 4 times, and it was raining out all 4 times! I think the moisture must have something to do with it happening. I thought I must have been accidentally hitting the button on the key, but I started taking my keys out of my pocket when I get home, and it still happens.
Flea: MINI Cooper, Chili Red w/white roof
white 15" 7-hole wheels, Cold Weather package, black kaleido cloth sport seats w/black door bolsters, silver interior, white bonnet stripes, American flag roof graphic, driving lamps, MFSW
Water in the BC1 sounds like a good possibility here. One way that can happen is that water gets behind the A-pillar trims (shiny black plastic exterior pieces) and runs thru one of the clip holes into the interior, runs down the wiring harness attached to the inside of the A-pillar down to the BC1 in the right side footwell. There was a service bulletin in England that added better sealing around the trims, added a cover to the BC1 module, and replaced the BC1 on some early build RHD MINIs.
So if it happens again, you might ask the dealer to remove the right side A-pillar trim and put new washers or sealant around the panel clips. Or next time you wash your MINI, spray the trims around their edge for a good bit to see if you can recreate this problem. Or maybe not.
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