61 35 950 Removing and Installing (Replacing) Control Unit For Comfort Access System

WARNING: This page is about a different car, the 2010 BMW 650i, 2009 BMW 650i, 2008 BMW 650i, 2007 BMW 650i, and 2006 BMW 650i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection) . See 61 35 ... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE)

NOTE: The comfort access system is a radio-based system and can be interfered with by radio waves from other systems (e.g. mobile phone).

Necessary preliminary tasks:

Remove luggage compartment floor trim panel . See 51 47 101 REMOVING AND INSTALLING/REPLACING LUGGAGE COMPARTMENT FLOOR TRIM PANEL
Disconnect battery negative lead . See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD
Remove trim for instrument panel, bottom left . See 51 45 181 REMOVING AND INSTALLING/REPLACING BOTTOM RIGHT TRIM FOR INSTRUMENT PANEL

Unfasten plug connection (1) and disconnect.

Unlock catch (2) in direction of arrow and remove control unit for comfort access system (3) from device carrier (4).

Installation:

Make sure control unit (3) is correctly seated in device carrier (4).

Fig 1: Identifying Catch, Comfort Access System And Device Carrier

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out programming/coding . See VEHICLE PROGRAMMING AND CODING