67 31 572 Removing And Installing/Replacing Drive Unit For Head Restraint Height Adjustment On Left Or Right Front Seat (Comfort Seat)

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Note airbag safety instructions! See 72 SAFETY PRECAUTIONS AND GENERAL INFORMATION .
Incorrect handling may result in triggering of active head restraint and thereby cause injury.

Necessary preliminary tasks:

Remove both rear panels on front seat backrest . See 52 17 205 REMOVING AND INSTALLING/REPLACING BOTH REAR PANELS ON LEFT OR RIGHT FRONT SEAT BACKREST (COMFORT) .
Remove front head restraint . See 52 17 390 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT HEAD RESTRAINT (COMFORT) .
Disconnect battery negative lead . See 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Pull backrest cover (1) in direction of arrow over metal lugs (2) and detach.

If necessary, detach backrest cover (1) on both sides from backrest frame.

Fig 1: Pulling Backrest Cover Over Metal Lugs

G04769166

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For purposes of clarity, illustration shows backrest cover removed.

Unfasten plug connection (1) and disconnect.

Release screw connections (2).

Feed out AKS carrier (3) in direction of arrow and secure against falling out.

Fig 2: Removing AKS Carrier

G04769172

Courtesy of BMW OF NORTH AMERICA, INC.

Cut through cable tie (1).

Disconnect plug connection (2).

Release screws (3).

Feed drive unit for head restraint height adjustment (4) in direction of arrow out of AKS carrier (5) and remove.

Fig 3: Removing Drive Unit For Head Restraint Height Adjustment

G04769173

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Initialize drive unit for head restraint height adjustment. See 67 31 ... NOTES ON INITIALIZING ELECTRIC SEAT SERVODRIVES .