Wiper Switch

The wiper switch is operated by a brief press (similar to E65). The wiper switch does not lock into place.

The signal from the wiper switch is passed on by the steering column switch cluster (SZL) to the Safety and gateway module (SGM). The SGM transmits the signal to the KBM.

The axial switch on the end of the wiper switch is used to activate automatic mode (automatic control of wipers by rain/light sensor). When automatic mode is not active, intermittent wiper mode is controlled according to vehicle speed.

Fig 1: Identifying Wiper Switch

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Wiper System Overview Schematic

Courtesy of BMW OF NORTH AMERICA, INC.