LEMON Manuals: Even more car manuals for everyone
Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2909 (Restraints - Repair - E91) >> Airbag Generator, Airbag Unit For Passenger >> 52 14 385 Replacing gas cartridge (firing unit) for crash-active headrest on front seat >> Necessary preliminary work

Necessary preliminary work

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 BMW 328xi, 2012 BMW 328i, 2011 BMW 328xi, 2011 BMW 328i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: The firing unit may be replaced up to 4 times.
Triggering frequency is denoted on the label on the head restraint carrier.
Labels are available as spare parts.

Starting situation: 

Head restraint is in the crash position after being triggered.

NOTE: Firing unit can only be removed in the triggered state.
The complete crash-active head restraint must be replaced if the event of a head restraint fault signal and an untriggered firer.

Lever out cover welt in marked area.

Remove cover with padding from head restraint.

Fig 1: Identifying Cover Removing Areas
G06202956Courtesy of BMW OF NORTH AMERICA, INC.

Unclip service flap.

Move firing unit (1) forwards and remove towards front.

Fig 2: Removing Firing Unit
G06202957Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Replace firing unit.

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 3: Identifying Plug Connection
G06202958Courtesy of BMW OF NORTH AMERICA, INC.

Press locking spring (1) on left and right through opening and secure with cylindrical pins (or similar).

Head restraint is unlocked.

Fig 4: Pressing Locking Spring
G06202959Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: This work requires a great exertion of effort!

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 5: Pulling Head Restraint
G06202960Courtesy of BMW OF NORTH AMERICA, INC.

Clip firing unit (1) onto linkage (2).

Installation note: 

Check that firing unit (1) is firmly seated on linkage.

Press firing unit (1) forwards and clip into place.

IMPORTANT: Firing unit (1) must audibly snap into place.
Fig 6: Pressing Firing Unit
G06202961Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Visually check that firing unit is correctly seated.

Attach label for identification after replacement.

Clip service flap into place.

Fig 7: Identifying Drive Plug Connection And Control Unit Plug Connection
G06202962Courtesy of BMW OF NORTH AMERICA, INC.