Disable and Enable Key

Disable and Enable Key

If a key is lost, it should be disabled electronically in the EWS control module. It is not possible to start the engine with a disabled key.

Important notes

Pay attention to the following points:

• Before disabling keys determine what keys are missing (key numbers). This is determined in the test module "Service functions - key status". For this check, the vehicle owner must present all keys belonging to the vehicle.
  
• In order to disable or enable a key, the key inserted in the ignition lock must be enabled and transmit valid data.
  
• The active key (key in ignition lock) cannot be disabled.
  
• NEVER disable all keys. At least two keys should remain enabled.
  
• Do NOT disable new keys which have not yet been delivered!
  

Security function

A disabled key is evaluated as valid (engine start possible) within 10 seconds after removing an enabled key.