67 31 630 Removing and installing/replacing drive for backrest tilt adjustment (rear seats): Installation

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

Powerlok screws must be replaced and must not be reused
Powerlok screws are mechanical screw locks with trilobular threads

Microencapsulated screws (Loctite) must be replaced and may not be reused
Screw connection must be completed within 20 minutes (start of curing)
Microencapsulated screws must not be retightened
Clean thread of nut beforehand in event of repeated use

Unfasten plug connection (2) and disconnect.

Release screw (1).

Installation:

Replace screw (1).

Tightening torque 67 31 16AZ .

Fig 1: Identifying Backrest Tilt Adjuster Plug Connection And Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Installation:

Replace screws (1).

Tightening torque 67 31 15AZ .

Remove drive unit.

Fig 2: Identifying Drive Unit Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

Carry out FUNCTION CHECK WITH ADAPTER CABLE

Replacement only:

INITIALIZE backrest adjustment motor.