84 11 660 Removing and installing/replacing Telematic Control Unit (TCU) (SA633/SA639)

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

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

NOTE: Comply with notes and instructions on HANDLING OPTICAL WAVEGUIDES .

Necessary preliminary tasks:

Clamp off BATTERY NEGATIVE LEAD
Remove LEFT LUGGAGE COMPARTMENT WHEEL ARCH TRIM
Partially remove wheel arch panel left at F10

Unscrew nuts (1).

Release screw (2).

Remove TCU holder (3) in direction of arrow.

Fig 1: Removing Telematic Communication Box Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug connections (1) and disconnect.

Unfasten aerial plug (2) and disconnect.

Release all nuts.

Remove TCU (3) from holder (4).

Installation:

Observe color coding of aerial plugs (2).

Fig 2: Locating TCU Holder And Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out VEHICLE PROGRAMMING/ENCODING