BMW X5: Removing And Installing/Replacing Control Unit For Air Supply Unit
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
Necessary preliminary tasks:
- Remove ignition key.
- Disconnect battery negative lead.
- Remove flap in luggage compartment panel on right.
Lift back insulating mat (1).
Fig. 67: Identifying Insulating Mat
Disconnect plug connection (1).
Unlock catch (2) and remove control unit (3).
Fig. 68: Identifying Control Unit And Catch
After installation:
- Replacement only: Carry out programming/coding. See CODING & PROGRAMMING
- Replacement only: Carry out ride-height-calibration.
REMOVING AND INSTALLING / REPLACING TRANSVERSAL-ACCELERATION
SENSOR
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
IMPORTANT: Do not kink floor panelling under any circumstances!
Necessary preliminary tasks:
- Remove right front seat.
- Lift carpet and fold back to one side.
- Remove floor inlay.
Release nuts (1), disconnect plug connection (2) and remove lateral
acceleration sensor (3).
Installation:
Replace self-locking nuts.
Tightening torque 37 14 7AZ, see 37 14 ELECTRIC COMPONENTS
Fig. 69: Identifying Plug Connection And Lateral Acceleration Sensor
After installation:
- If necessary, carry out initial Dynamic Drive operation.
REMOVING AND INSTALLING/REPLACING CONTROL UNIT FOR VERTICAL
DYNAMICS MANAGEMENT
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
Necessary preliminary tasks:
- Remove ignition key.
- Disconnect battery negative lead.
- Remove flap in luggage compartment panel on right.
Lift back insulating mat (1).
Fig. 70: Identifying Insulating Mat
Disconnect plug connection (1).
Unlock catches (2) and remove control unit (3).
Fig. 71: Identifying Control Unit And Catches
After installation:
- Replacement only: Carry out programming/coding.
- Replacement only: Carry out ride-height-calibration.
REMOVING AND INSTALLING/REPLACING AIR SUPPLY UNIT RELAY
After completing work:
Necessary preliminary tasks:
- Remove ignition key.
- Remove trim panel for instrument panel at bottom right.
Release screw (1) and fold down fuse box.
Fig. 72: Identifying Screw
Pull relay (1) from fuse box.
Fig. 73: Identifying Relay
READ NEXT:
REMOVING AND INSTALLING/REPLACING CONTROL UNIT FOR VERTICAL
DYNAMICS MANAGEMENT
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
Necessary preliminar
IMPORTANT: Risk of damage!
Extreme cleanliness must be ensured in the connection area of the vent
lines
during removal and installation. Even the smallest of dirt particles can cause
leakage in the a
SEE MORE:
It is the outward-opening piezo-injector that renders possible spray-directed
direct injection and thus the overall
innovations of the N54 engine. Due to the fact that only this component ensures
that the injected fuel spray cone
remains stable, even under the prevailing influences of pressure and
Principle
HDC Hill Descent Control is a downhill control
feature that controls the vehicle speed on steep
downhill grades, for instance when driving on unpaved
roads.
General information
When the system is active, the vehicle moves at
the speed set by the driver, without the driver
having to depress