84 11 650 Removing and installing/replacing telematic control unit (TCU) (option SA633/SA638/SA639/SA664)

WARNING: This page is about a different car, the 2006 BMW 330xi, 2006 BMW 330i, 2006 BMW 325xi, and 2006 BMW 325i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Replacement with option SA638/SA664:

Carry out programming/coding
If Necessary, carry out coupling procedure
Replacement with option SA633/SA639:
Carry out programming/coding
Via Diagnosis and Information System (DIS):
- Service functions
- Start subsequent assessment

Necessary preliminary tasks:

Remove luggage compartment floor trim panel

E91 only:

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

Fold panel (3) upwards.

Fig 1: Identifying Clips, Storage Pan And Panel.

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

Fig 2: Identifying Cable Ties And Screws

Disconnect plug connection (1).

Fig 3: Identifying Plug Connection

Disconnect plug connections of antenna cables (1).

Remove TCU (2).

Installation:

Note colour coding of antenna plugs.

Fig 4: Identifying TCU And Antenna Cables

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 antenna cables in accordance with new layout
- New cable routing as pictured
Secure cable holder (1) to TCU holder (2) with cable tie

Fig 5: Identifying TCU Holder And Cable Holder