BMW X5 Owners & Service Manuals

BMW X5: Overview Of Sensors For Airbag System

Airbag Trigger Device
Fig. 53: Location Of Airbag System

  1. Airbag control unit (under centre console)
  2. Acceleration sensors, front (left/right)
  3. Sensors, front door (left/right)
  4. Sensors, B-pillar (left/right)

REMOVING AND INSTALLING/REPLACING AIRBAG CONTROL UNIT

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).

WARNING: Note airbag safety instructions!

Incorrect handling can activate airbag and cause injury.

Necessary preliminary tasks:

Unscrew nuts (1).

Tightening torque.

Disconnect plug connections (2).

Installation:

Make sure ground cable (2) is correctly laid.

If necessary, replace damaged cable shoe on ground cable (2).

Airbag Trigger Device
Fig. 54: Identifying Airbag Control Unit Plug Connections And Nuts

Replacement:

Carry out programming/coding. See VEHICLE PROGRAMMING AND CODING.

REMOVING AND INSTALLING/REPLACING EMERGENCY POWER SIREN WITH TILT SENSOR

Necessary preliminary tasks:

Release screws (1) and remove cover (2).

Installation:

Make sure rubber grommet (3) is correctly seated.

Airbag Trigger Device
Fig. 55: Identifying Cover Screws

Release screws (1).

Remove housing (2) and disconnect associated plug connection.

Airbag Trigger Device
Fig. 56: Identifying Plug Connection

Replacement:

Release nut (1) and remove emergency power siren with tilt sensor (2).

Airbag Trigger Device
Fig. 57: Identifying Emergency Power Siren With Tilt Sensor

IMPORTANT: Risk of damage! Guides (1) of emergency power siren (2) must be correctly seated in area (3) of holder (4)!

Airbag Trigger Device
Fig. 58: Identifying Emergency Power Siren

REMOVING AND INSTALLING/REPLACING FRONT LEFT SENSOR

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).

Necessary preliminary tasks:

Release screws (1).

Remove sensor (2) and disconnect associated plug connection.

Tightening torque.

Installation:

Replace screws (1).

Airbag Trigger Device
Fig. 59: Identifying Sensor

IMPORTANT: During fitting, the inscription (1) must be legible from the front.

Airbag Trigger Device
Fig. 60: Fitting Inscription

REMOVING AND INSTALLING/REPLACING FRONT RIGHT SENSOR

Operation is identical to: See REMOVING AND INSTALLING/REPLACING FRONT LEFT SENSOR.

REMOVING AND INSTALLING (REPLACING) LEFT B-PILLAR SENSOR

WARNING: Note airbag safety instructions! Incorrect handling can activate airbag and cause injury.

Necessary preliminary tasks:

Version with rear cabin air conditioning:

Release screws (1), feed out sensor and disconnect associated plug connection.

Tightening torque.

Airbag Trigger Device
Fig. 61: Identifying B-Pillar Sensor Screw

Installation:

Establish correct positioning of B-pillar sensor (1) by means of guide pin (2) and screw (3).

Airbag Trigger Device
Fig. 62: Identifying B-Pillar Sensor And Guide Pin With Screw

REMOVING AND INSTALLING (REPLACING) LEFT FRONT DOOR SENSOR

WARNING: Note airbag safety instructions! Incorrect handling can activate airbag and cause injury.

Necessary preliminary tasks:

Release screw (1).

Tightening torque. Remove sensor with pin (2) from door panel fit (3) towards rear and disconnect associated plug connection.

Installation:

Make sure fit (2) is correctly seated.

Airbag Trigger Device
Fig. 63: Identifying Sensor With Pin From Door Panel

REMOVING AND INSTALLING/REPLACING RIGHT FRONT DOOR SENSOR

This operation is described in REMOVING AND INSTALLING (REPLACING) LEFT FRONT DOOR SENSOR.

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