CLAAS 769Fh: Park-Lock Inoperative - Module TR3 (A57-3)

The Park-Lock function is inoperative. The module TR3 (A57-3) does not detect the key's status change and switches to standby. This issue occurs when the ignition is turned off after Park-Lock and the main switch is turned off. The system may require a restart of the engine to re-engage Park-Lock.

1. 1

   The status of the key and its interaction with the module TR3 (A57-3)

2. 2

   The operation of the Park-Lock mechanism

3. 3

   The condition of the main switch and its connection to the module TR3 (A57-3)

1. 1

   Check the key status

   Verify that the key is properly inserted and that its status is being correctly recognized by the module TR3 (A57-3).

2. 2

   Inspect the Park-Lock mechanism

   Ensure that the Park-Lock is functioning correctly and that there are no mechanical obstructions or failures.

3. 3

   Restart the engine

   Turn off the ignition, wait for at least 30 seconds, and then restart the engine to reset the system.