Since the key does sound to be turning try lubricating the cylinder and see if it turns the other way at all to unlock it.If this does not work then it will take a lock smith or someone with door unlock tools to open the door to then access the battery unfortunately. insert your vallet key in the driver side door lock (outside the car) turn the vallet key towards lock and hold it there. while it is held towards lock, press the unlock button on your new remote for 2 seconds. let go. press it again for 2 seconds. let go and you should hear an alarm honk or something like that. Yes I tried the procedure; removed plastic cap besides door handle; put good key in ignition w/o starting car; lock door with manual plastic key; push bad fob buttons. does not work. The key will start the car but will not lock/unlock doors. It will not open trunk or set alarm either. Poor battery connection The battery inside the key fob of Passat has metal retaining clips that hold the battery in position and completes the circuit. If the clips don't have any tension, it can cause contact issues and the remote may not receive any power. Make sure the battery is firmly placed and does not move around when you shake the remote. You can usually get away with putting the key in the ignition, turning the ignition on (not starting) then bashing the lock/unlock buttons a few times. However I don't know how you go about How to unlock a 2008 Volkswagen Passat with a dead battery or key fob Checkout more of my videos. Links below. Square body pick up goes over the embankment h .

vw passat b6 key won t unlock