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.
2001 BMW 325xi 4D Wagon, AutomaticFACTORY OEM SERVICE PROCEDURE
Sequential Manual Transmission - Service Information
- Manual Transmission
- Sequential manual transmission SMG, based on GS6- 37BZ
- E46
- Introduction
- E46 - SMG System Overview
- Brief Description Of Components
- E46 - SMG Gear Lever With Mounting Block And Gear Lever Trim
- E46 - SMG Steering Wheel With Gearshift Paddles
- E46 - SMG SPORT Button For Dynamic Driving Control FDC
- E46 - SMG Hydraulic Unit With Sensors
- E46 - SMG Gearshift/Selector Angle Actuator
- E46 - SMG Shift Travel Sensor And Selector Angle Sensor
- E46 - SMG Clutch Actuator With Clutch Travel Sensor
- E46 - SMG Control Unit
- E46 - SMG Display In Instrument Cluster
- System functions
- Acceleration assistance (race-start function)
- Rocking free, e.g. from snow
- Vehicle standstill
- Gear lever position neutral and ignition off
- Fault display, SMG warning lamp and emergency program
- National versions
- Sequential manual transmission SMG, based on GS6- 37BZ
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.
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