Removal and installation the electric motor of the sliding roof panel drive (BMW 3 Series E46)

Removal

1. Remove the visor with a screwdriver. Disconnect the drive switch connector by opening the lock by squeezing.



2. Unscrew the mounting screws with a Torx T25 key.

3. Remove the electric motor-reducer unit and disconnect the connector.

Installation

4. Install the electric motor-reducer unit in place and connect it. Secure it lightly with a torque of 3 Nm using two short screws "2" and one long one "1". Be sure to install new screws. If this is not possible, lubricate the screws in advance with a thread locking agent, such as Loctite 270.

5. Connect the drive switch connector, install the cover.

Initializing the sliding panel

6. Set the sliding panel to the up position and then press the sliding panel switch further in the "Up position" direction.



7. Keep the switch in the lifting position for 5 seconds after:

• each power interruption or
• roof adjustments.

8. Keep the switch in the lifting position for 20 seconds after:

• malfunctions in operation
• disconnecting the drive or
• work with cable traction.

9. Initialisation is complete when the sliding panel is briefly pressed again in the direction of "Lift position" (click).