Remote Key 315MHz for BMW CAS3 3/5 Series X5 PCF7952 With Keyless-Go Functionwith logo and Uncut Blank BladeAdapted Car Model Referencesfor 3/5series x5 x6.Here listed is a new full remote case support 315MHz CAS3 System. This is for you to own a new additional key.Please ensure your current key and key blade fits exactly the same as in the cover picture.The remote and transponder chip needs to be programmed and the key blank needs to be cut at your local dealer, qualified automative locksmith. Most locksmiths now provide such services, and charge much less than the dealer.