84 11 660 Removing And Installing (Replacing) Telematic Control Unit (TCU) (SA633/SA638/SA639/SA664)

Replacement with option SA633/SA639: 

• Carry out VEHICLE PROGRAMMING/ENCODING
• Via Diagnosis and Information System:
  • Service functions
  • Start subsequent assessment

For vehicles with Teleservices optional equipment: 

• Update services via menu in the central information display.

Necessary preliminary tasks 

• Disconnect BATTERY EARTH LEAD
• Remove LUGGAGE COMPARTMENT FLOOR TRIM PANEL

E91: 

Release mounting clips (1) and remove storage tray (2).

Fold panel (3) upwards.

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 wall slightly (4). Feed out holder for TCU/SVS (2) towards the luggage compartment.

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

Installation note: 

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

Make sure wiring harness is correctly laid.

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

Disconnect plug connection (1).

Disconnect plug connections on the aerial lines (1).

Remove TCU (2).

Only for replacement of version up to 03/2007: 

1. Unclip cable clip (1) from holder for TCU (2)
2. Connect aerial lines after the rearrangement (new cable routing as illustrated)
3. Secure cable clip (1) to holder on TCU (2) using cable straps
   Fig 6: Cable Clip & Holder For TCU

   Courtesy of BMW OF NORTH AMERICA, INC.