27 10 700 Removing And Installing/Replacing Control Unit For Transfer Box (ATC 300)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 528xi, 2009 BMW 535xi, 2009 BMW 528xi, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection). See 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) .

Replacement:
Before and after replacement, execute the "Repair" service function with the BMW diagnosis system.

Necessary preliminary tasks:

Remove trim for instrument panel, bottom right. See 51 45 181 REMOVING AND INSTALLING/REPLACING BOTTOM RIGHT TRIM FOR INSTRUMENT PANEL .

Remove side trim panel (1) and entrance strip trim (2).

Pull back floor trim (carpet) towards rear.

Fig 1: Identifying Side Trim Panel And Entrance Strip Trim

G04745113

Courtesy of BMW OF NORTH AMERICA, INC.

Remove inlay (1).

Fig 2: Identifying Inlay

G04745114

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws.

Tightening torque, 8 N.m.

Fig 3: Locating Screws

G04745115

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect connector (1).

Modify control unit.

Fig 4: Identifying Control Unit Connector

G04745116

Courtesy of BMW OF NORTH AMERICA, INC.