52 17 888 Replacing both gas cartridges for crash-active headrest

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WARNING: Read and comply with SAFETY REGULATIONS for handling airbag modules and pyrotechnical belt tensioners.
Incorrect handling may result in triggering of the crash-active headrest and thereby cause injury.

Switch off the ignition!

Necessary preliminary tasks:

Disconnect BATTERY NEGATIVE CABLE

IMPORTANT: Renewal of igniter may be carried out up to 4 times.
Triggering frequency is denoted on the sticker on the head restraint carrier.
Labels are available as spare parts.

Starting situation:

Head restraint is in the crash position after being triggered.

NOTE: Igniter can only be removed in the triggered state.
The complete head restraint must be replaced in the event of a crash-active headrest fault message and non-activated igniter.

Release the retaining lug with a screwdriver (1) through the service opening.

Simultaneously press headrest forwards and disengage.

Carry out the procedure on the left and right sides of the head restraint.

Fig 1: Releasing Retaining Lug Using Screwdriver

G10063682

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Retaining lugs (1) must not be damaged.

If necessary, replace head restraint.

Fig 2: Identifying Retaining Lugs

G10063683

Courtesy of BMW OF NORTH AMERICA, INC.

Feed out headrest in direction of arrow.

Fig 3: Removing Headrest

G10063684

Courtesy of BMW OF NORTH AMERICA, INC.

Move igniter (1) forwards and remove towards top.

Fig 4: Removing Firing Unit

G10063685

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Replace igniter.

Installation note:

Plug connection (1) must audibly snap into place.

Check firm engagement of plug connection (1) by gently pulling on connector.

Lay cable in side guide.

Fig 5: Identifying Plug Connection

G10063686

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: This work requires a great exertion of effort!
Perform the following work with a second person to give assistance.

Pull head restraint (1) at an angle downwards until it is completely in lowest position and rests on linkage.

Hold head restraint (1) in this position for the following tasks.

Fig 6: Pulling Head Restraint Downward To Lowest Position

G10063687

Courtesy of BMW OF NORTH AMERICA, INC.

Clip igniter (1) onto linkage (2).

Installation note:

Check that igniter (1) is firmly seated on linkage.

Press igniter (1) forwards and clip into place.

IMPORTANT: Igniter (1) must audibly snap into place.

Fig 7: Installing Firing Unit

G10063688

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Visually check that igniter is correctly seated.

Attach label for identification after replacement.

Clip service flap into place.

Fig 8: Clipping Service Flap Into Place

G10063689

Courtesy of BMW OF NORTH AMERICA, INC.