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Home >> BMW >> 2013 >> 528i >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - F10 - HVAC System, Steering System, Restraints System >> Steering System - Functional Description >> Steering column switch cluster >> Functional networking
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Functional networking

After being recorded and processed, the data from the steering column switch cluster (SZL) are relayed to the appropriate control units via FlexRay. The steering column switch cluster (SZL) can be assessed with the diagnosis system via the central gateway module (ZGM). Information on the diagnosis can be called up via the FlexRay.

Fig 1: Steering Column Switch Cluster - Circuit Diagram
G09910249Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Footwell module (FRM)
2 Drive for steering column adjustment, vertical
3 Drive for steering column adjustment, horizontal
4 Shift paddle, left
5 Steering wheel heating with temperature sensor
6 Shift paddle, right
7 Left-hand multifunction steering column switch cluster
8 Switch cluster, multifunction steering wheel, right
9 Junction Box Electronics (JBE)
10 Power distributor in junction box
11 Power distribution box, rear
12 Instrument panel (KOMBI)
13 Central gateway module (ZGM)
14 Electronic steering wheel module
15 Driver's airbag
16 Fanfare button
17 Steering column lever, wiper switch
18 Steering column switch center (SZL)
19 Switch for steering column adjustment and steering wheel heating
20 Electronics of touch detection
21 Crash Safety Module (ACSM)
22 Car access system (CAS)
23 Vibration actuator
24 Touch detection sensor
25 Drop arm, turn signal/high beam switch with on-board computer button