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

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. 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 .