52 17 120 Replacing left active seat pump

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Necessary preliminary tasks:

Remove REAR PANEL on front seat backrest

Release screws (1).

Unlock quick-release coupling (2) and disconnect.

Disconnect plug connection (3).

Lift out pump for pressure distributor.

Fig 1: Identifying Plug Connection, Quick-Release Coupling And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Carry out FUNCTION CHECK .