SHD Control Unit

The sunroof module is located, as with other models, behind the rear view mirror in the center of the roof.

It contains the following components:

• DC motor with attached gear reduction mechanism.
• 2 integrated Hall sensors for position and trap detection.
• Control unit

The DC motor is controlled with a PWM signal to provide a smooth-rundown feature similar to the window operation.

Fig 1: Identifying SHD Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

This module can only be replaced as a complete unit.