I've got an E89 with roof trouble.

[RobbiZ4]

I've got an E89 with roof trouble. Initially it was complaining about a left shield shell 2 failure. However, when I looked for voltage on the signal side it was fine. I replaced the relays and ended up getting 3 new errors. The boot is open and the roof is shut.

Just follow my hints:
E89: Collection of the 9 typical age-related defects in the roof environment

 

[Tornado]

Have you scanned it and got some error codes?
What do you mean “there was voltage on the signal side” ? Are you talking about one of the micro switches? have you tested the switch with a multimeter? Is it connected? Can you trace the wires and check there is continuity from one end to the other?