I've tried searching all over this forum and all over google, my sunroof works extremely intermittently, when it does work, it works flawlessly. But there is no in-between.

It seems electrical to me.

I replaced the switch 3 times with replacements from a junkyard, and I just replaced the entire sunroof motor with module, as soon as the I installed the new motor the sunroof worked great for about 5 minutes, then completely stopped again.

Any suggestions?! Thanks in advance!

 

I don't know the sunroof system well,... But maybe others could chime in on my logic here.

Sounds like it could be a relay that gets stuck, so I'd check to see if there is a relay in the circuit, then test it (or tap on it lightly with the back of a screw driver). Also could just be a short, check wires at all plugs and connectors, do a continuity check with a multimeter.

Thats my 2cents.... Overpriced I know.

 

What year is your MINI?

 

it's a 2003

 

Check the grounds?
A bad/high resistance ground can cause failures in motors/etc similar to what you are having...
Maybe some corrosion on them, or a chafed wire.

 

well now I'm finding out that if I unplug my battery and my ecu,
and then plug it all back in, my sunroof will work on the next start up until I shut the
car off.

then it stops working again!