If it is the valet key it wont be able to lock/unlock the boot(ummm trunk) or the glove box either .....right guys?.When you say it wont double lock do you mean you cant turn the key past the first position?To double lock you have to turn the key approx 90 degress,and past the position where the doors lock to the second position.If you hold it there all open windows and sunroof should close too.