BMW 7 Series: System Overview
Input/output Diagram, Steering Column Switch Cluster
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Fig. 125: Steering Column Switch Cluster Input/Output Diagram
COMPONENTS DESCRIPTION CHART
- Steering column stalk for turn-indicator/high-beam switch
- Steering column switch cluster (SZL)
- Steering column stalk wiper switch
- Footwell module (FRM) 12 Control unit (KAFAS)
- Central gateway module (ZGM)
FlexRay - FlexRay
- Junction box electronics (JB)
- Instrument cluster (KOMBI)
- Multifunction steering wheel
- Coil-spring assembly
- Steering wheel heating/steering wheel adjustment buttons
- Crash Safety Module (ACSM)
LIN-Bus - Local Interconnect Network bus
LWS - Steering-angle sensor
The signals which are triggered by the turn-indicator/high-beam switch steering column stalk (1) or wiper switch (3) are made available to the footwell module (4) or the junction box electronics (6).
The button signals at the multifunction steering wheel (8) are directed through the coil-spring assembly (9) to the steering column switch cluster (2), where they are evaluated and then transmitted across the FlexRay.
System Circuit Diagram, Steering Column Switch Cluster
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Fig. 126: Steering Column Switch Cluster System Circuit Diagram
COMPONENTS DESCRIPTION CHART
- Central gateway module (ZGM)
- Footwell module (FRM)
- Dynamic Stability Control (DSC)
- Car Access System (CAS)
- Instrument cluster (KOMBI)
- Crash Safety Module (ACSM)
- Junction box electronics (JB)
- Front distribution box
- Fanfare-horn button
- Steering column stalk wiper switch
- Automatic wiping LED
- Wiper switch
- Knurled wheel for intensity of the rain-light-solar-condensation sensor
- Automatic wiping button
- Steering column switch cluster coil spring
- Steering column switch cluster (SZL)
- Button combination steering wheel heating/electrical steering column adjustment
- Electrical steering column adjustment button
- Steering wheel heating button
- Steering wheel heating button LED
- High-beam assistant button
- On-board computer button
- Turn-indicator/high-beam switch
- Steering column stalk for turn-indicator/high-beam switch
- Driver's airbag priming caps
- Steering wheel electronics
- Vibration actuator
- Steering wheel heating
- Button block for cruise control system in the multifunction steering wheel
- Button block for radio/telephone etc. in the multifunction steering wheel
FlexRay - FlexRay
KI. 30 - Terminal 30
KI. 30B - Terminal 30 base operation
LIN-Bus - Local Interconnect Network bus
LWS - Steering-angle sensor
NOTE: A three-stage driver's airbag is installed in the US version.
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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
System Components
The Steering Column Switch Cluster as Standard Equipment
The steering column switch cluster (SZL) consists of, among other things, the
following components:
Electronic steering column switch cluste
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For Your Own Safety
Intended use
Heed the following when using the vehicle:
Owner's Manual.
Information on the vehicle. Do not remove
stickers.
Technical vehicle data.
The traffic, speed, and safety laws where the
vehicle is driven.
Vehicle documents and statutory documents
Warranty
Your vehicle is technically
Check Control
Concept
The Check Control system monitors functions in
the vehicle and notifies you of malfunctions in
the monitored systems.
General information
A Check Control message is displayed as a combination
of indicator or warning lights and text
messages in the instrument cluster and, if applicable,
in th
