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 2008 BMW 335xi, 2008 BMW 328xi, 2007 BMW 335xi, 2007 BMW 328xi, and 2006 BMW 330xi. 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 27 00 15AZ. See 27 00 TRANSFER BOX IN GENERAL

Fig 3: Locating Bolts

G04745115

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect connector (1).

Modify control unit.

Fig 4: Identifying Connector

G04745116

Courtesy of BMW OF NORTH AMERICA, INC.