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

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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 wave guides. See 61 13... TREATING CABLES AND FIBRE-OPTIC CABLES .

Necessary preliminary tasks:

Disconnect battery negative lead . See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .
Remove luggage compartment floor trim . See 51 47 101 REMOVING AND INSTALLING/REPLACING LUGGAGE COMPARTMENT FLOOR TRIM PANEL (CONVERTIBLE) or 51 47 101 REMOVING AND INSTALLING/REPLACING LUGGAGE COMPARTMENT FLOOR TRIM PANEL (COUPE) .

Fig 1: Identifying Retaining Clips And Storage Pan

Courtesy 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).

Fig 2: Removing Holder For Telematics Control Unit/SES From Body

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Make sure wiring harness is correctly laid.

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

Fig 3: Identifying Cable Ties

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Fig 4: Identifying Plug Connection

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Disconnect plug connections of aerial cables (1).

Remove TCU (2).

Fig 5: Identifying TCU And Aerial Cables

Courtesy 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.

Unclip cable holder (1) from TCU holder (2).
Connect aerial leads according to new layout (new cable routing as pictured)
Secure cable holder (1) to TCU holder (2) with cable tie

Fig 6: Identifying Cable Holder And TCU Holder
Courtesy of BMW OF NORTH AMERICA, INC.