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

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. 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 FIBERS .

Necessary preliminary tasks:

Clamp off BATTERY NEGATIVE LEAD
Remove LEFT LUGGAGE COMPARTMENT WHEEL ARCH PANEL

Unscrew nuts (1).

Release screw (2).

Remove TCU holder (3) in direction of arrow.

Fig 1: Removing TCU Holder

G06886716

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: Identifying Plug Connections, Aerial Plug With TCU And Holder

G06886717

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out VEHICLE PROGRAMMING/ENCODING

For vehicles with Teleservices optional equipment:

Update services via menu in the central information display.