BMW X3 Service & Repair Manual: Controller
REPLACING VOLTAGE REGULATOR
Necessary preliminary tasks:
- Switch off ignition
- Disconnect battery negative lead
- Notes on removing and installing electronic control units.
- Remove alternator
Bosch:
Release protective caps (1).
Bosch:
Release screw (1) and nuts (2), remove cover.
Bosch:
Release screws and remove regulator switch (1) in direction of arrow.
Bosch:
Installation:
Clean contact surfaces and check pretension of contact spring, replace regulator switch if necessary.
Measurement A = min. 5 mm.
Check collector ring for wear and recondition if necessary.
Valeo:
Slacken nut (1).
Slacken nut (2).
Release screws (3).
Release cover (4).
Valeo:
Release screws.
Remove regulator switch (1) towards top.
Valeo:
Installation:
Clean contact surfaces and check pretension of contact spring, replace regulator switch if necessary.
Measurement A = min. 5 mm.
Check collector ring for wear and recondition if necessary.
Installation:
Fit new regulator (1) with attached mounting sleeve (2) or locked carbon brush.
Pull off mounting sleeve (2) and replace with cover (3).
Removing and installing/replacing alternator (N47 D20 O1)
Necessary preliminary work:
Read out the fault memory of the DDE control unit.
Switch off ignition.
Disconnect BATTERY EARTH LEAD .
Remove I ...
Other materials:
BMW X3 Owners Manual > Airbags: Functional readiness of the airbag
system
When the ignition is reel on,
the warning
lamp in the instrument cluster lights
up briefly and thereby indicates the operational
readiness of the entire airbag system
and the belt tensioner.
Airbag system malfunctioning
Warning lamp does not come on when the
ignition is turned on.
Th ...
BMW X3 Owners Manual
BMW X3 Service & Repair Manual
