BMW Locksmith
Driveway Service

Yes for the 2006 through 2022 range, which covers most of the BMWs on the road. The procedure on E90, E60, F30, F10, and X-series chassis reads the ISN code from the DME via OBD-II or bench EEPROM access, then generates and pairs a fresh key. Autel IM608 and VVDI2 BMW handle that workflow. G-series cars from 2019 onward with BDC2 modules add bench work to the procedure, which is longer but still serviceable mobile. The platform check happens on the phone from your VIN before any appointment goes on the calendar.

Comfort Access is the BMW marketing name for hands-free proximity entry combined with push-button ignition. The technology works through low-frequency sensors built into the door handles and the trunk that wake up and authenticate the fob within proximity range, unlocking the doors without anyone pressing a button. Once inside, the brake-and-button sequence fires the engine while the fob sits anywhere in the cabin. Programming a Comfort Access fob requires OBD-II tools that can sync with the right module, and no owner self-programming method exists.

Two ranges define the dealer numbers. Transponder and flip key platforms on older models run $330 to $500. Comfort Access smart keys on newer F and G-series cars run $500 to $1,000. Neither range factors in the tow cost for AKL situations. The bigger hidden cost is the two-to-three-day wait while the replacement fob ships from BMW's New Jersey parts facility before any programming appointment can be scheduled. Our inventory and tools travel with the truck, so the job wraps the same day you call. Exact figures by key type sit in the table above.

Battery first. BMW fobs run on CR2032 cells with a two-to-four-year service life, and the warning sign before they die is intermittent or weak detection rather than a clean failure. Fresh cell first, then test. If the fresh cell does not solve it, run the emergency start sequence. Pull the metal blade out of the fob body, use it through the handle cap keyhole to unlock the driver door, then hold the dead fob against the key symbol on the right side of the steering column while pressing the brake and pushing Start/Stop. That passive RFID backup is built into every BMW push-start car from 2010 forward. If neither method gets the engine running, the failure has moved out of the fob and into the antenna or the CAS module.

No. The answer is the same regardless of which BMW you are asking about. EWS, CAS, FEM, BDC, BDC2: every architecture the brand has shipped requires either professional OBD-II programming hardware or bench EEPROM work to pair a key. Older E36 and E46 platforms do not have a hidden owner sequence, regardless of what an internet forum suggests. The contrast with Japanese brands, where older platforms accepted ignition-cycle add-key procedures, is one of the most asked-about facts about BMW key service.

Yes. Any BMW with Comfort Access is susceptible to relay attacks. The mechanism is mechanical rather than cryptographic: two signal amplifiers, one near the entryway where the fob sits inside the house, one near the car parked outside. The amplifiers extend the live fob proximity signal through walls, and the car reads the relayed signal as a nearby fob and unlocks. No code capture required, no hacking skill needed, just two cheap devices and two people. A Faraday pouch around every fob inside the home shuts the attack down completely. BMW has also pushed software updates for newer models that add a motion sensor to the fob, which stops the broadcast when the fob has been stationary for a set period.

The Display Key is the touchscreen fob BMW introduced on premium G-series cars. The fob carries a small LCD that surfaces vehicle status, lock state, and climate controls beyond just the standard lock and unlock buttons. It ships standard on higher trims of the 7 Series, the 5 Series, and the X7. Programming a Display Key replacement runs through the same CAS4-plus or BDC2 platform tools as any standard Comfort Access fob, with no extra OEM-only steps locked behind a dealer paywall. The work happens on-site for every supported platform.