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66 20 510 Removing And Installing/Replacing Control Unit (Park Distance Control)

Saloon/Sedan, CoupeA: 

Detach left trunk wheel arch trim in rear area. See 51 47 161 REMOVING AND INSTALLING/REPLACING TRUNK WHEEL ARCH TRIM ON RIGHT (TOURING)

Disconnect plug connections (1).

Slacken screws (2).

Feed holder for control unit (4) in direction of arrow out of elongated holes (3) and remove.

Fig 1: Removing Feed Holder For Control Unit
G03125545Courtesy of BMW OF NORTH AMERICA, INC.

Replacement only: 

Unscrew nuts (1).

Remove control unit (2) from control unit holder (3).

Fig 2: Removing Control Unit From Control Unit Holder
G03125546Courtesy of BMW OF NORTH AMERICA, INC.

Convertible: 

Remove lower section of side trim at rear right. See SIDE COVERING WITH ARM

Release screws (1) and remove control unit holder (2).

Fig 3: Releasing Screws And Removing Control Unit Holder
G03125547Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections (4).

Replacement only: 

Unscrew nut (1).

Pull control unit (2) in direction of arrow out of guide (3) and remove.

Installation: 

Pay attention to cable guide.

Fig 4: Pulling Control Unit In Direction Of Arrow Out Of Guide And Removing
G03125548Courtesy of BMW OF NORTH AMERICA, INC.

touring: 

Slacken panel for trunk floor plate at front. See 51 47 131 REMOVING AND INSTALLING/REPLACING PANEL FOR FRONT LUGGAGE COMPARTMENT FLOOR PANEL (TOURING)

NOTE: For purposes of clarity: Illustration shows trunk floor removed.

Loosen nut (1). Unscrew nut (2). Unfasten plug connection.

Raise control unit and remove.

Fig 5: Identifying Nuts
G03125549Courtesy of BMW OF NORTH AMERICA, INC.

compact: 

Remove side panel cover.

Disconnect plug connections (1).

Unscrew nuts (2).

Lift out control unit (3).

Fig 6: Disconnecting Plug Connections
G03125550Courtesy of BMW OF NORTH AMERICA, INC.