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Home >> BMW >> 2013 >> X6 50i >> Repair and Diagnosis >> External Pages >> Different car >> Section 1531 (Communication Systems - Repair - E91) >> 8411 Transceiver, Handset And Support, Card Reader >> 84 11 660 Removing and installing/replacing telematics control unit (TCU) (option SA633/SA638/SA639/S >> Necessary preliminary tasks

Necessary preliminary tasks

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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).

Fig 2: Identifying Wiring Harness Fastener And Guides
G05780066Courtesy 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 Nuts And Unclip Cable Ties
G06980444Courtesy 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 Aerial Cables And TCU
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: Identifying Cable Holder And TCU Holder
G04728108Courtesy of BMW OF NORTH AMERICA, INC.