12 90... Removing and installing/replacing left or right electronics box

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IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).

NOTE: Follow instructions for removing and installing CONTROL UNITS!

Necessary preliminary tasks:

Read fault memory.
Disconnect BATTERY EARTH LEAD .
Remove DME control unit left or right. See CONTROL UNIT (DME) CYLINDERS 7-12 or CONTROL UNIT (DME) CYLINDERS 1-6 .

NOTE: Picture shows the right side, the procedure for the left side is identical.

Release screws (1).

Tightening torque: see 1AZ in 12 90 ELECTRONICS BOX, WIRING HARNESS .

Unclip coolant lines at clamp (2) from electronics box.

Feed electronics box (3) out upward and remove.

Fig 1: Identifying Feed Electronics Box, Clamp And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

When installing the electronics box, insert guide (1) on engine support.

Fig 2: Identifying Electronics Box Guide

Courtesy of BMW OF NORTH AMERICA, INC.