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

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. 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 tasks:

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

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 12 90 4AZ .

Release clamp (2).

Remove cover (3) from supplementary electronics box.

Fig 2: Identifying Supplementary Electronics Box Cover, Clamp And Screws

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).