Control Module: Service and Repair

Transmission Control Module, Replacing

• The Transmission Control Module (TCM) (J217) is a component of the mechatronic unit in the transmission and cannot be replaced separately.

• To achieve optimal anti-theft protection for the vehicle, an anti-theft immobilizer was installed. The anti-theft immobilizer is a system for enabling/locking the Transmission Control Module (TCM) (J217).

Work procedure

Check the control module identification of the previous Transmission Control Module (TCM) (J217) as follows:

- Connect the scan tool.

- Switch the ignition to the "ON" position.

- Select "Diagnostic mode 9: Vehicle information."

- Select the"Test-ID 04: Calibration identification".

- The Transmission Control Module (TCM) (J217) identification will be displayed, e.g.: 09G27750 L 0301

- End diagnosis and switch the ignition off.

- Replace the Mechatronic unit in the transmission.

- Check the identification of the new Transmission Control Module (TCM) (J217) to ensure it matches the old Transmission Control Module (TCM) (J217).

- Code the Transmission Control Module (TCM) (J217 ) => [ Diagnostic Mode 09 - Read Vehicle Information ] Diagnostic Mode 09 - Read Vehicle Information.

- Generate readiness code. => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.