IMPORTANT: Aluminum-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification: Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .
Necessary preliminary work:
Unlock connector (1) and remove.
Release screws on both knock sensors (1) and remove knock sensors (1).
Installation note:
Replace aluminum screws.
Installation note:
Clean contact surface of knock sensors on engine block.
NOTE: Check stored fault messages.
Clear diagnostic fault entries from fault memory.
BMW X3 Owners Manual > HDC Hill Descent Control: Increasing or decreasing vehicle speed
Specify desired speed in the range from approx.
4 mph/6 km/h to approx. 15 mph/25 km/h
using the rocker switch of the cruise control on
the steering wheel. Vehicle speed can be
changed by lightly accelerating.
Press the rocker switch up to the point of
resistance: the speed increases ...