Hi all I would like to let you know the problems and the steps I took to rectify my problem.
The roof on my 2003 e85 z4 failed, it began when i tried to open my roof i depressed the down button in the cab but all i got was an orange light but no noise from the motor and the windows didn't drop,I then checked at the motor which I have relocated to the boot and found that I did not have an electrical supply at the motor, I checked the fuses and relays and found they were fine, I traced it back to the micro switch which is in the boot on the carpet section that is at the back of the seat wall 2 thirds of the way up it had a piece of grit lodged in it that stopped the switch completing the circuit having removed that the roof worked fine I hope this helps.
The roof on my 2003 e85 z4 failed, it began when i tried to open my roof i depressed the down button in the cab but all i got was an orange light but no noise from the motor and the windows didn't drop,I then checked at the motor which I have relocated to the boot and found that I did not have an electrical supply at the motor, I checked the fuses and relays and found they were fine, I traced it back to the micro switch which is in the boot on the carpet section that is at the back of the seat wall 2 thirds of the way up it had a piece of grit lodged in it that stopped the switch completing the circuit having removed that the roof worked fine I hope this helps.