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 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Note AIRBAG SAFETY INSTRUCTIONS !
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 REAR PANEL (NORMAL / ELECTRIC SEAT) or REAR PANEL (COMFORT SEAT) .
Remove front head restraint. See HEAD RESTRAINTS (NORMAL/ELECTRIC SEAT) or HEAD RESTRAINTS (COMFORT SEAT) .
Disconnect BATTERY NEGATIVE LEAD .

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

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: Identifying AKS Carrier, Plug And Screw

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: Identifying Cable, Plug AKS Carrie And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

INITIALIZE drive unit for head restraint height adjustment.