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Home >> BMW >> 2011 >> 1M >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Body Equipment - Repair >> Front Electrically Operated Windows >> 51 33... Slightly loosen power window regulator to remove door lock in left or right front door

51 33... Slightly loosen power window regulator to remove door lock in left or right front door

Special tools required: 

NOTE: To remove door lock, move rear section of sound insulation (1) toward center.

Necessary preliminary work: 

Lower power window regulator (3) as illustrated.

Disconnect plug connection to power window regulator.

Slacken off j-bolt (1) with special tool 51 3 240 on ring gear (2).

Tightening torque 51 32 1AZ .

Connect plug connection to power window regulator.

Move power window upward as far as it will go.

Disconnect plug connection to power window regulator.

Fig 2: Removing J-Bolt Using Special Tool 51 3 240 On Ring Gear
G10021559Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Slacken off j-bolt on ring gear (1) until it can be easily twisted out at the inner star (2).
Fig 3: Identifying Ring Gear Hook Screw And Inner Star
G05779282Courtesy of BMW OF NORTH AMERICA, INC.

Mark measuring point on window lift rail (1) and inner door panel (2).

Determine distance between window lift rail (1) and inner door panel (2) and note down.

Fig 4: Checking Distance Between Window Lift Rail And Inner Door Panel
G10021561Courtesy of BMW OF NORTH AMERICA, INC.

Slacken off j-bolt (1) at inner star.

Remove film and release nut (2) below it.

Tightening torque 51 33 1AZ .

Installation note: 

Replace defective film if necessary.

Fig 5: Removing Film And Nut
G10021562Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (2).

Tightening torque 51 33 1AZ .

Fig 6: Identifying Power Window Unit Rear Section, Back Film And Nut
G05779295Courtesy of BMW OF NORTH AMERICA, INC.

Slacken off nut (3) with reversible ratchet (2) of special tool 51 3 300 .

Tightening torque 51 33 1AZ

Installation note: 

Reset the distance you noted down by turning knob (1) on special tool 51 3 300 .

Fig 7: Turning Knob
G04752711Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Check distance between window lift rail (1) and inner door panel (2), repeat previous setting procedure if necessary.

Fig 8: Checking Distance Between Window Lift Rail And Inner Door Panel
G10021561Courtesy of BMW OF NORTH AMERICA, INC.

Pull bottom of rear guide rail (1) of power window regulator in direction of arrow until opening (2) in the inner door panel is clear.

Secure rear guide rail (1) to inner door panel with cable tie (3).

Mask off opening (2) in inner door panel with adhesive tape.

Fig 9: Pulling Rear Guide Rail Bottom Of Power Window Regulator
G10021566Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Remove door lock (1) through opening in inner door panel.
IMPORTANT: Do not damage door lock seal when removing.
Fig 10: Removing Door Lock
G10021567Courtesy of BMW OF NORTH AMERICA, INC.