Hi, please can anyone help? I have a 2004 X5 with an electric panoramic sunroof. The rear roof is faulty and only opens slightly but then doesn't close at all. This stops the front roof closing and I have to use the manual winding tool and then push the rear roof raising arms back manually to shut the roof. As soon as I touch any button for the roof it goes straight back to the same position. Any ideas please?? Many thanks.