Necessary preliminary tasks

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Remove TRIM PANEL FOR PEDAL ASSEMBLY .

Unfasten plug connection (1) and disconnect.

Pull brake light switch (2) in direction of arrow out of brake light switch holder (3).

Installation:

Press brake pedal (4) to floor.
Slide brake light switch (2) as far as it will go into brake light switch holder (3).
Grip brake light switch holder (3), slowly return brake pedal (4) to starting position and pull back to stop.

Fig 1: Pulling Brake Light Switch Of Brake Light Switch Holder

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Removing brake light switch holder (2):
Press brake pedal.
Press catches (1) together and unclip brake light switch holder (2) from bearing block (3).

Fig 2: Removing Brake Light Switch Holder From Bearing Block

Courtesy of BMW OF NORTH AMERICA, INC.