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.
2021 BMW i3 Range ExtenderFACTORY OEM SERVICE PROCEDURE
1235 ELECTRICAL MACHINES (i3s)
1235 TIGHTENING TORQUE OVERVIEW
| Electrical machine electronics (EME) support to electrical machine | ||
| M8 | Tightening torque | 19 Nm |
| High-voltage cable to electrical machine electronics (EME) | ||
| M8 Replace screws. |
Tightening torque | 14 Nm |
| Lid on electrical machine | ||
| M6 | Tightening torque | 15 Nm |
| Lower section of connector to upper section of connector (rotor position sensor) | ||
| Tightening torque | 2 Nm | |
| Potential equalization line to electrical machine | ||
| M6 | Tightening torque | 8 Nm |
| Rotor position sensor to bearing cap | ||
| M5 Replace screws. |
Tightening torque | 4.5 Nm |
| Rotor position sensor to electrical machine | ||
| M5 | Tightening torque | 4.4 Nm |
| Service cap to electrical machine | ||
| M6 | Tightening torque | 10 Nm |
| Stop pad to Drive module | ||
| M6 | Tightening torque | 12 Nm |
Factory Service Tools
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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.
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