My old 6 series would open/close the roof, windows and mirrors by holding down the lock/unlock on the fob. The 435i that i purchased didn't do this, upon inquiring with BMW, this is now incorporated in the Comfort Access package which cannot be retro fitted or 'coded' into the car. After some research i came across this :- http://www.mods4cars.com/sms/shop/i...bmc9MiZjdXJyPTI=&action=products&cat=3&menu=1 Duly purchased and installed in less than 10 mins, easily connected to laptop and desired functions set up. Works brilliantly, it can even be 'deactivated' if car goes to dealership. Am now a happy bunny again.