12 90... Removing and installing/replacing electronics box add-on

WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750i, and 2015 BMW 750Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Comply with NOTES ON PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD protection)!

NOTE: Follow notes for removing and installing control units.

Necessary preliminary work

Read fault memory.
Disconnect BATTERY EARTH LEAD .

Release expanding rivet (1) and remove cover (2).

Installation note:

Replace damaged expanding rivet.

Holder of cover (2) must snap into place in suspension cross-brace during installation.

Fig 1: Identifying Expanding Rivets And Cover

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Release screws (1).

Tightening torque 12 90 4AZ .

Release clamp (2).

Remove cover (3) from supplementary electronics box.

Fig 2: Identifying Screws, Clamp And Auxiliary Box Lid

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip grommet hold-down device (1).

Detach rubber grommets (2) from electronics box add-on.

Installation note:

Make sure grommets are correctly seated (watertightness).

Fig 3: Identifying Grommet Hold-Down Device, Electronics Box Rubber Grommets, Carrier Plate And Supplementary Electronics Box

Courtesy of BMW OF NORTH AMERICA, INC.

Release carrier plate (3) from lower section of supplementary electronics box (5) and set aside.

Release screw (4).

Tightening torque 12 90 2AZ .

Remove the lower section of the supplementary electronics box (5).