Key Activation

Keys that are lost or stolen may be deactivated or made to not operate the starter functions. The SERVICE FUNCTIONS of the DISplus or MoDic for EWS III D contains a "bar/release code" function that activates and deactivates keys of the EWS III D. Any key may be "Barred" except the key in the ignition at the time of deactivation. The lost or stolen key can be identified by the identification of the remaining keys.

There is no limit to the number of times a key can be activated/deactivated.

Fig 1: Identifying Starter Functions

Courtesy of BMW OF NORTH AMERICA, INC.

Workshop Hint: 

With E46 Style diagnostics, check the following status' in Diagnosis, Control Unit Functions, EWS:

• Starter Status:

  Park/Neutral, BC Code active, Engine Speed, Double lock status, Starter Enabled.

• Key Status:

  Transmits, Changing code, Key I.D., Key number, Key Password, Key disabled

• DME Wire Status.
• Selector lever/Clutch Status.
• Central Locking Status.
• Input Power.
• BC Code via K-Bus.