Steering Column Lock: Service and Repair

Shaft Lock Module

Removing, Module Unlocked

• If a NEW column lock module has been installed, a new Wireless Ignition Node (WIN) must also be installed.

• For module and programming replacement order.

- Remove the steering column opening cover.

- Remove the steering column cover reinforcement mounting screws. Remove the steering column cover reinforcement.

- Insert the ignition key into the ignition lock cylinder. This will move the shaft lock module locking bolt to the unlocked position. Leave the key in the lock cylinder while the shaft lock module is being removed.

- Insert a suitable drift or pin punch (no more than 4 mm (5/32 in.) in diameter) into each release hole (1) on the module mounting bracket. Insert each drift or punch until it bottoms and leave in place. This will depress the two spring clips that secure the shaft lock module to the mounting bracket.

- Slide (and wiggle) the module toward the base of the column far enough to disengage the module from the mounting bracket.

- Remove the shaft lock module from the steering column.

- Disconnect the wiring harness connector and remove the shaft lock module.

Removing, Module Locked

• If a NEW column lock module has been installed, a new Wireless Ignition Node (WIN) must also be installed.

• For module and programming replacement order.

- Remove the steering column.

- Drill a 12.7 mm (1/2 inch) hole in the left corner above the "M" of the Mercedes Benz stamping.

- Using a pick turn the gear counter clockwise until the gear can not be turned any more.

- Insert a suitable drift or pin punch (no more than 4 mm (5/32 in.) in diameter) into each release hole (1) on the module mounting bracket. Insert each drift or punch until it bottoms and leave in place. This will depress the two spring clips that secure the shaft lock module to the mounting bracket.

- If not present, insert the ignition key into the ignition lock cylinder. This will move the shaft lock module locking bolt to the unlocked position. Leave the key in the lock cylinder while the shaft lock module service is being completed.

- Connect the wiring harness connector to the module.

- Align the engagement and slide tabs (2) on the shaft lock module housing (1) with the slots and channels in the mounting bracket (3) on the steering column.

- Carefully slide the module toward the top (steering wheel end) of the column until it is in mounted position and the spring clips on the module have engaged the bracket, locking it in place.

- Install the steering column cover reinforcement using the four mounting screws.

- Install the steering column opening cover.

• Vehicles equipped with PEM: If the WIN is being replaced, a diagnostic scan tool MUST be used to initialize and configure the new PEM. Follow the programming steps outlined in the diagnostic scan tool for Replace found under Miscellaneous Functions for the PEM/Passive Entry Module menu item.

• If a NEW column lock module has been installed, a new Wireless Ignition Node (WIN) must also be installed.

• For module and programming replacement order.