I have a e46 330ci converter. my mate has and m3 converter. but with his key ...he can shut all the windows and the roof. I've been told by a friend I can have this done to my key aswell. From bmw? cost?
With the car locked up,press the unlock button and keep it pressed for upto 20 secs.. Windows and roof should open(thats if you have a fully electric roof)..
Again,with them all down,press the closed button and keep it on for 20secs or so...Will close the windows at the very least..
You can't change the key in the E46 key as it recharges in the ignition. All E46 Convertible roofs are full electric, as well. There was never a manual roof version.
As I was told by the Master Tech it should do it, try it manually, put the key in the door keyhole and turn it to the unlock position and hold it there, this should activate the roof and windows to go down.
I'll ask again tomorrow to confirm it and I'll let you know.
I stand corrected, it is a programming option on all E46 Convertibles and not a standard thing.
The key does need to be programmed to do it. The Master Technician has also warned that it is really hit and miss as to whether it will work properly, this is down to the software on the cars Control Module.
After a bit more digging, the MT has also said that on occasion the roof may stop retracting whilst going down via the key. He said if it does this just press the lock button then unlock button and hold down the unlock button to get the roof moving again, it will carry on going down from its position. He said that sometimes the car "remembers" when the roof is fully down then and will be fine from then on.