52 17 385 Replacing Gas Cartridge For Active Head Restraint On Left Or Right Front Seat

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2007 BMW 550i, 2007 BMW 530xi, 2007 BMW 530i, 2007 BMW 525xi, and 2007 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Read and comply with SAFETY REGULATIONS for handling airbag modules and pyrotechnical belt tensioners.

Improper handling can lead to triggering of the pyrotechnical seat belt tensioner or side airbag, resulting in injuries.

Switch off ignition!

Necessary preliminary tasks:

Remove HEAD RESTRAINT
Remove REAR PANEL on front seat backrest

Disconnect plug connection on gas cartridge.

Detach retaining points (1).

Slide active head restraint carrier downwards.

Fig 1: Identifying Retaining Points

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Release spring clips (1) and (2).

Fig 2: Identifying Spring Clips

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Release screws (1).

Remove gas cartridge complete with holder (2).

Fig 3: Identifying Screws And Holder

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Release screws (1) on left and right.

Installation:

Insert screws (1) with Loctite.

Tightening torque: 52 10 18AZ . See FRONT SEATS for specs.

Slide top rail (3) off bottom rail (2).

Remove gas cartridge (4).

Fig 4: Identifying Screws, Top/Bottom Rail And Gas Cartridge

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Installation:

Gas cartridge (1) is secured in holder by guide lug (2).

Fig 5: Identifying Gas Cartridge And Guide Lug

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Procedure after triggered active head restraint:

Push head restraint back into original position.
Insert new gas cartridge with spring clips.

NOTE:

The gas cartridge may be replaced up to 5 times.

Then the backrest must be replaced.

Number of triggerings are stored in the control unit.