Disconnect the vehicle batteries before removing or plugging in the transmission control unit (TCU) to prevent voltage spikes from destroying the electronics.
Block the wheels and ensure the parking brake is engaged. The transmission can shift unexpectedly during electronic calibration tests. zf traxon service manual
The service manual is not just for fixing problems; it is also a guide to understanding and utilizing the TraXon's most advanced features. Disconnect the vehicle batteries before removing or plugging