BMW 7 Series: Introduction
The Steering Column Switch Cluster - An Interface
The steering column switch cluster is a "mechanical and electrical interface" from the steering wheel to the vehicle; it is firmly connected mechanically to the steering column. On top of this purely mechanical connection, the steering column switch cluster is connected electrically via bus systems or directly to components.
In the F01/F02, the steering column switch cluster has a steering column stalk on either side of the steering column. The right-hand steering column stalk is for activating/deactivating the wiper/washer system functions.
The left-hand steering column stalk is for activating/deactivating the high-beam headlight or turn indicators and for operating the on-board computer functions.
A steering column switch cluster with optical steering-angle sensor is built into the F01/F02. The steering-angle sensor uses a non-contact optical measuring system for steering-angle detection.
The steering column switch cluster receives the button signal of the steering wheel directly or across the LIN bus. These signals are forwarded from the steering column switch cluster to the respective control units.
Signals such as the buttons for controlling the volume of the radio are transmitted by the steering column switch cluster across the FlexRay. The steering column switch cluster receives e.g. the signal to activate the vibration actuator across the FlexRay.
The steering column switch cluster forwards the trigger signal of the driver's airbag directly to the priming caps of the airbag.
For the electrical steering column adjustment, the switch cluster evaluates the button and transmits requests across the FlexRay.
The steering column switch cluster also evaluate the button for the steering wheel heating. The steering column switch cluster forwards this signal across the LIN bus to the steering wheel electronics.
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System Overview
Input/output Diagram, Steering Column Switch Cluster
Fig. 125: Steering Column Switch Cluster Input/Output Diagram
COMPONENTS DESCRIPTION CHART
Steering column stalk for turn-indicator/high-beam sw
Functions
Signal Detection
The functions of the steering column switch cluster are:
Detecting the switching signals of the steering-column switches
Detecting the controls in the multifunction steering wheel
Detecting The Controls
The multifunction steering wheel has additional buttons. The buttons increase
in-car comfort and convenience
by providing for comfort and convenience functions.
The steering column switch cluster re
SEE MORE:
Introduction
Features of the Automatic Luggage Compartment Lid Actuating System
The automatic luggage compartment lid actuating system will be available on
the F01 as from its launch in
09/08. It will be available to order as an option and only concerns the luggage
compartment lid.
Automatic luggage compartme
Wiper blades
Safety information
NOTICE
The window may sustain damage if the wiper
falls onto it without the wiper blade installed.
There is a risk of damage to property. Hold the
wiper firmly when changing the wiper blade. Do not fold or switch on the wiper
without a wiper
blade installed.
NOTICE
Folded-away w
