Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
System Circuit Diagram, Steering Column Switch Cluster
2009 BMW 750Li 4.4 3SECTION System Circuit Diagram, Steering Column Switch Cluster
COMPONENTS DESCRIPTION CHART
| Index | Explanation |
|---|---|
| 1 | Central gateway module (ZGM) |
| 2 | Footwell module (FRM) |
| 3 | Dynamic Stability Control (DSC) |
| 4 | Car Access System (CAS) |
| 5 | Instrument cluster (KOMBI) |
| 6 | Crash Safety Module (ACSM) |
| 7 | Junction box electronics (JB) |
| 8 | Front distribution box |
| 9 | Fanfare-horn button |
| 10 | Steering column stalk wiper switch |
| 11 | Automatic wiping LED |
| 12 | Wiper switch |
| 13 | Knurled wheel for intensity of the rain-light-solar-condensation sensor |
| 14 | Automatic wiping button |
| 15 | Steering column switch cluster coil spring |
| 16 | Steering column switch cluster (SZL) |
| 17 | Button combination steering wheel heating/electrical steering column adjustment |
| 18 | Electrical steering column adjustment button |
| 19 | Steering wheel heating button |
| 20 | Steering wheel heating button LED |
| 21 | High-beam assistant button |
| 22 | On-board computer button |
| 23 | Turn-indicator/high-beam switch |
| 24 | Steering column stalk for turn-indicator/high-beam switch |
| 25 | Driver's airbag priming caps |
| 26 | Steering wheel electronics |
| 27 | Vibration actuator |
| 28 | Steering wheel heating |
| 29 | Button block for cruise control system in the multifunction steering wheel |
| 30 | 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.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.