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

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2016 BMW 760Li, 2015 BMW 760Li, 2014 BMW 760Li, 2013 BMW 760Li, and 2012 BMW 760Li. 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: Identifying Nuts, Screw And TCU Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug connections (1) and disconnect.

Unfasten antenna plug (2) and disconnect.

Release all nuts.

Remove TCU (3) from holder (4).

Installation:

Observe color coding of antenna plugs (2).

Fig 2: Identifying Plug Connections, Antenna Plug With TCU And Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out VEHICLE PROGRAMMING/ENCODING