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.
Bus System Overview
2011 BMW 740iSECTION Bus System Overview
INDEX REFERENCE CHART
| Index | Explanation |
|---|---|
| ACSM | Crash safety module |
| BE_FAS | Driver assistance systems operating unit |
| CIC | Car Information Computer |
| DME | Digital Motor Electronics |
| DSC | Dynamic Stability Control |
| EGS | Electronic transmission control unit |
| FRM | Footwell module |
| KOMBI | Instrument cluster |
| ICM | Integrated Chassis Management |
| JB | Junction box electronics |
| LRR | Long-range radar sensor (LRR) |
| MFL | Multifunction steering wheel button pad |
| SRR | Short-range radar sensor (SRR) |
| SZL | Steering column switch cluster with steering angle sensor |
| ZGM | Central gateway module |
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.