Bavarian Motor Works (BMW) is a German automobile company that manufactures and markets performance and luxury vehicles. BMW automobiles feature a keyless entry system that is built into the key and allows you to unlock and lock the doors and boot with the press of a button. At times, the unlock and lock functionality on the key will stop working. When this happens, you need to reset your BMW key.
Unlock your BMW using the metal key.
Place the key in the ignition.
Turn the key to the "On" position.
Turn the key to the "Off" position.
Remove the key from the ignition.
Press and hold the "Unlock" button on your key.
Press the "Lock" button on the key three times. Your key is now reset and should function properly.