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

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

NOTE: Follow notes for removing and installing control units. See 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 Expanding Rivet 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 Clamp, Screws And Cover

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 (water tightness).

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 Carrier Plate From Lower Section Of Supplementary Electronics Box

Courtesy of BMW OF NORTH AMERICA, INC.