In order to reuse them with another car: 1) Verify that the part number of this key matches your existing keys. You can find this under the battery cover. 2) The immobilizer portion of the key must be reflashed by a qualified third party. For this, you should utilize a locksmith who is familiar with Volkswagen vehicles and has the correct equipment, or one of the other sellers who offer this service. Volkswagen dealerships cannot do this part for you, as it requires aftermarket equipment that they do not have. 3) The metal blade of the key must be replaced, and then cut to match the lock cylinders of your vehicle. New replacement blades can be acquired from several other sellers, and cut by most locksmiths as long as you have a functional existing key. 4) The key must then be programmed to your vehicle by a qualified locksmith who is familiar with Volkswagen vehicles and has the correct equipment. We do not recommend the use of Volkswagen dealerships for this - it is likely to lead to wasted money and time. Use an honest and experienced third-party locksmith instead. Part number: 5G0 959 752 BD FCC ID: NBGFS12A01 Buttons: 4 (Lock, Unlock, Trunk, Panic) Functional condition: New battery installed, all buttons tested to output a good signal Cosmetic condition: Good, showing minor wear from previous use