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Headlamp Washer System

The headlamp power wash pump, is controlled by a relay mounted in the passenger compartment fusebox. A low side switch in the BC1 activates it.

The system will function when the low or high beam lights are on. The headlights are washed with two squirts with a pause of 5 seconds between wash cycles. After activation a 10-minute inhibit function is active - this can be over-ridden by activating the washer switch four times in succession.

Fig 1: Headlight Power Wash Relay
G04724493Courtesy of BMW OF NORTH AMERICA, INC.