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

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IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

NOTE: Follow instructions for REMOVING AND INSTALLING CONTROL UNITS

Necessary preliminary tasks:

Read fault memory.
Disconnect NEGATIVE BATTERY CABLE .

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 Cover And Expanding Rivet

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 Clamp, Screws And 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).

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).

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

Courtesy of BMW OF NORTH AMERICA, INC.