34 41 280 Removing and Installing/Replacing Actuating Unit With Control Unit For Parking Brake (EMF)

Necessary preliminary tasks: 

• Remove both brake discs. See 34 21 320 Removing and Installing Or Replacing Both Rear Brake Discs 

Set workshop mode in BMW diagnosis system.

• Path:
  • Function selection
  • Service functions
  • Chassis
  • Parking brake
  • Workshop mode

Open flap in luggage compartment at rear left. Remove first aid kit (1).

Fig 1: Identifying First Aid Kit

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Cable for emergency release (1) must be removed with actuating unit.

Press both detent lugs together and press cable for emergency release (1) downwards.

Unclip cable for emergency release from guides on rear axle.

Fig 2: Pressing Cable For Emergency Release

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Release screws (1) and remove heat shield (2).

Release stabilizer. See 33 55 000 REMOVING AND INSTALLING/REPLACING REAR STABILIZER , 37 12 220 REMOVING AND INSTALLING/REPLACING REAR ACTIVE STABILIZER ) at bearing points and swing downwards.

Fig 3: Identifying Spring Clip And Screw

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Release screw (1) and remove spring clip (2) on left and right.

Installation: 

Tightening torque 34 41 1AZ. See 34 41 PARKING BRAKE

Push in core of parking brake cable in direction of expander lock (2) as far as it will go and grip firmly.

Press nipple (1) down with a screwdriver.

Pull handbrake cables out of wheel carrier.

Fig 4: Identifying Expander Lock And Nipple

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Installation: 

Insert handbrake cable into brake carrier/brake guard plate.

Sleeve must be inserted up to stop.

Nipple of handbrake cable must audibly snap into place in expander lock.

Disengage parking brake Bowden cable (1) from holders on left and right.

Fig 5: Disengaging Parking Brake Bowden Cable

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Disconnect plug connection (1).

Release screws (2).

Installation: 

Tightening torque 34 41 4AZ. See 34 41 PARKING BRAKE

Release screws (3) and remove holder (4).

Installation: 

Tightening torque 34 41 3AZ. See 34 41 PARKING BRAKE

Feed out actuating unit with parking brake Bowden cables and cable for emergency release.

Fig 6: Identifying Plug Connection And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

After installation: 

• Carry out initial operation/function test in BMW diagnosis system.
  • Path
    • Function selection
    • Service functions
    • Chassis
    • Parking brake
    • Initial operation/function test

Replacement: 

• Carry out programming/coding of control units.