Poo said:Take your vehicle to the car dealership ,they usually replace the sun roof motor and its a matter of few min..
Read more: How to Know if Your Sun Roof Motor Is Dead | eHow.com http://www.ehow.com/how_6153246_sun-roof-motor-dead.html#ixzz17QNcsWVy
Thanks for the suggestion. Wish it was as simple as that. Have to ask though,..have you actually seen a Z4 ?