Your current remote must have a battery back door or this remote will not work Unlocked OEM BMW Keyless Remote Key Fob OEM COMFORT ACCESS BMW KR55WK49147. For FCC ID: KR55WK49147. Key blade must be cut first before inserting into remote, key blade will get stuck if this is not done.
BMW E90 w/ COMFORT ACCESS. Works as intended, fraction cost of Dealer. Must be programmed and cut with a Automotive locksmith. ( not an OEM key this is Aftermarket probably China made ) very cost effective option.