63 99 231 Replace bulb for rear fog light (Cooper S)

Unfasten plug connection (1) and disconnect.

Release latch mechanism (2) and remove bulb holder (3).

Fig 1: Identifying Latch Mechanism, Plug Connection, And Bulb Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Remove bulb (1) out of bulb holder (2).

Installation note: 

Note BULB TYPE .

Fig 2: Identifying Bulb And Bulb Holder

Courtesy of BMW OF NORTH AMERICA, INC.