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.
2012 BMW 335xi Automatic TransFACTORY OEM SERVICE PROCEDURE
System overview
| Index | Explanation |
|---|---|
| 1 | Central gateway module (ZGM) |
| 2 | Crash Safety Module (ACSM) |
| 3 | Car Access System (CAS) |
| 4 | Digital engine electronics (DME) |
| 5 | Fuel low-pressure sensor |
| 6 | Junction Box Electronics (JBE) |
| 7 | Luggage compartment power distribution box |
| 8 | Electric fuel pump control (EKPS) |
| 9 | Electronic fuel pump |
| 10 | Instrument panel (KOMBI) |
| 11 | Fuel level sensor 2 (right) |
| 12 | Fuel level sensor 1 (left) |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.