Hints
Do not activate wipers if frozen to windshield
Do not switch on the wipers if they are frozen to the windshield; otherwise, the wiper blades and the wiper motor may be damaged.
Do not activate wipers on dry windshield
Do not use the wipers if the windshield is dry, as this may damage the wiper blades or cause them to become worn more quickly.
Do not activate wipers with wipers folded away
Do not switch on the wipers if they are folded away, otherwise the hood or the wipers may be damaged.
Switching on
Push wiper lever up.
The lever automatically returns to its initial position when released.
The wipers switch to intermittent operation when the vehicle is stationary.
Wipers change to normal speed when vehicle comes to standstill.
Switch off and brief wipe
Push wiper lever down.
The lever automatically returns to its initial position when released.
BMW X3 Service & Repair Manual > Engine wiring loom: Replacing wiring harness section for ignition and injectors (N20)
IMPORTANT:
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC
DISCHARGE (ESD PROTECTION) .
Necessary preliminary tasks:
Read out the fault memory of the DME control unit.
Switch off ignition.
Remove ACOUSTIC COVER
Remove the PRESSURE CONVERTER for the exhaust turbocha ...