Necessary preliminary tasks

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2010 BMW 335xi, 2010 BMW 335i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect BATTERY NEGATIVE LEAD
Remove LUGGAGE COMPARTMENT FLOOR TRIM

E91:

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

Fold panel (3) upwards.

Fig 1: Identifying Retaining Clips And Storage Pan

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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

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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 Cable Ties

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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 Aerial Cables And TCU

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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 And TCU Holders
Courtesy of BMW OF NORTH AMERICA, INC.