Vehicle Keys: Notes

The purpose of the BMW keys are to:

• Operate All Locks
• Communicate with Drive-Away Protection (EWS) before start-up.
• Operate Keyless Entry and Burglar Alarm (DWA) Systems.
• Activate Key Memory Features

Each BMW is delivered to the new owner with four keys:

1. The Master Keys  (two) are equipped with a radio transmitter (FZV) for operation of the keyless entry system, burglar alarm (DWA) and determination of Key Memory.

   The Master Key also contains the electronic chip which is required to communicate with the driveaway protection system (EWS) before the vehicle will start. The mechanical blade of the key is used in the locking cylinders.

   Fig 1: Identifying BMW Keys

   Courtesy of BMW OF NORTH AMERICA, INC.
2. The Spare Key  is meant for emergencies and is not intended for continuous use. It contains the electronic chip for EWS, but does not operate the keyless entry system. It can be used in all mechanical locks.
3. The Valet Key  also contains the electronic chip for EWS. It can only operate the drivers door and ignition locks. The lock for the trunk or glove compartment cannot be operated by this key.