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 330eFACTORY OEM SERVICE PROCEDURE
Technical Data (G20)
Select a section or procedure below to view factory instructions:
11 00 ENGINE (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV)11 00 ENGINE (M340i, M340i xDrive)11 11 ENGINE BLOCK (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV, M340i, M340i xDrive)11 12 CYLINDER HEAD WITH LID (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV, M340i, M340i xDrive)11 13 OIL PAN (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV, M340i, M340i xDrive)11 14 HOUSING COVER (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV, M340i, M340i xDrive)11 15 CRANKCASE VENTILATION (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV)11 21 CRANKSHAFT WITH BEARING (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV)11 21 CRANKSHAFT WITH BEARING (M340i, M340i xDrive)11 25 PISTON WITH RINGS AND BOLTS (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV, M340i, M340i xDrive)11 61 INTAKE SYSTEM (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV, M340i, M340i xDrive)12 41 Starter With Attachment13 64 Fuel Injection Valves, Start Valves17 00 COOLING, TEST (330i, 330i xDrive, 330e PHEV, 330e xDrive PHEV)17 00 COOLING, TEST (M340i, M340i xDrive)24 00 Automatic Transmission27 00 Transfer Box31 00 General Front Axle31 50 Front Axle Differential31 60 Output Shaft32 00 Steering, Measurement32 21 Steering Column Stalk, Tie Rod, Steering Damper33 00 Rear Axle, Rear-Wheel Drive, Rear-Wheel Guide33 10 Rear Axle Differential33 17 Rear Axle Differential Suspension33 33 Axle Suspension34 11 Front Brakes34 21 Rear Brakes36 10 Wheels36 12 Tires41 00 Body51 00 General Body Equipment51 14 Plates, Labels, Adhesive Films51 31 Front And Rear Window54 13 SOFTTOP Operation, Fully Automatic61 61 Windshield Wiper61 71 Windshield Washer System63 14 Side Marker Lights, Rear Reflector64 00 NOTES, OVERVIEW OF AIR CONDITIONING COMPONENTS (330i, 330i xDrive, M340i, M340i xDrive)64 00 NOTES, OVERVIEW OF AIR CONDITIONING COMPONENTS (330e PHEV, 330e xDrive PHEV)
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.