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84 11 660 Removing and installing/replacing telematics control unit (TCU) (option SA633/SA638/SA639/SA664)

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Replacement with option SA638/SA664: 
  • Carry out vehicle programming/coding 
  • If necessary, carry out coupling procedure

Replacement with option SA633/SA639: 
  • Carry out vehicle programming/coding 
  • Via Diagnosis and Information System (DIS):
    • Service functions
    • Start subsequent assessment
IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection)  . See 61 35 ... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) .
NOTE: Comply with notes and instructions on handling optical waveguides  . See 61 00 ... NOTES ON HANDLING OPTICAL FIBERS .

Necessary preliminary tasks: 

E91: 

Release retaining clips (1) and remove storage pan (2).

Fold panel (3) upwards.

Fig 1: Identifying Retaining Clips And Storage Pan
G04728104Courtesy of BMW OF NORTH AMERICA, INC.

E88/E93: 

Unscrew nuts (1).

Remove holder for telematics control unit / SES (2) in direction of arrow from body.

Raise panel for luggage compartment partition (4) slightly and feed out holder for telematics control unit / SES (2) in direction of luggage compartment.

Release wiring harness fastener (3) from holder for telematics control unit / SES (2).

Installation: 

Make sure guides (5) are correctly seated in associated body holders.

Fig 2: Removing Holder For Telematics Control Unit/SES
G05780066Courtesy of BMW OF NORTH AMERICA, INC.

Make sure wiring harness is correctly laid.

Release nuts (1) and unclip cable ties (2).

Fig 3: Identifying Unclip Cable Ties And Nuts
G04753900Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Fig 4: Identifying Plug Connection
G04728106Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections of aerial cables (1).

Remove TCU (2).

Fig 5: Identifying Plug Connections Of Aerial Cables
G04728107Courtesy of BMW OF NORTH AMERICA, INC.

Replacement up to build date 03/2007: 

NOTE: TCU Everest is replaced from 03/2007 by TCU 1.5.
  1. Unclip cable holder (1) from TCU holder (2).
  2. Connect aerial leads according to new layout (new cable routing as pictured)
  3. Secure cable holder (1) to TCU holder (2) with cable tie
Fig 6: Secure Cable Holder To TCU Holder
G04728108Courtesy of BMW OF NORTH AMERICA, INC.
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