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July 12, 2019 Service bulletin

Lane Change Warning Lamps on Side View Mirrors Are Too Dark

BMW technical service bulletin 660612 for 2011-2013 BMW 528I, 2011-2013 BMW 535I and 2009-2013 BMW 750LI and others.

Bulletin number
660612
Component
Visibility: rearview mirrors/devices: exterior
Summary
Lane Change Warning Lamps on Side View Mirrors Are Too Dark. The lane change warning lamps (small and triangle-shaped) on the exterior door mirrors are too dark. This may occur when driving from light to dark conditions, such as: Entering a tunnel At twilight CAUSE: RLSS (Rain Light Solar Sensor) hardware error.

Owners of these vehicles have filed 15 complaints in the visibility category.

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