Necessary preliminary tasks:
IMPORTANT: Before beginning repair work, fully press the brake pedal several times to reduce the vacuum pressure in the brake servo.
Pull non-return valve (1) in direction of arrow out of brake booster.
Installation note: Check seal in brake booster and replace if necessary.
Disconnect snap fastener (1) and feed out vacuum line (2).
Installation note: Make sure that snap fastener (1) is correctly engaged.
BMW X3 Owners Manual > High-beam Assistant: The concept
When the low beams are activated, this system
automatically switches the high beams on and
off or suppresses the light in the areas that
blind oncoming traffic. The procedure is controlled
by a camera on the front of the interior
rearview mirror. The assistant ensures that the
high beams are a ...