BMW 3: Steptronic transmission
BMW 3 Series G20 (2018-2026) Owners Manual / Driving / Steptronic transmission
Concept
The Steptronic transmission combines the functions of an automatic transmission with the possibility of manual shifting, if needed.
Safety information
Warning An unsecured vehicle can begin to move and possibly roll away. There is a risk of accident.
Before exiting, secure the vehicle against rolling, for instance with the parking brake.
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Selector lever positions
Drive mode D
Selector lever position for normal vehicle operation.
All gears for forward travel are activated automatically.
R is reverse
Engage selector lever position R only when the
vehicle is sta
Rolling or pushing the vehicle
General information
In some situations, the vehicle is to roll without
its own power for a short distance, for instance in
a vehicle wash, or be pushed.
Engaging selector lever position N
1. Switch on
Shift paddles
Concept
The shift paddles on the steering wheel allow
you to shift gears quickly while keeping both
hands on the steering wheel.
General information
Shifting
The vehicle only shifts at suitable engine
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Surround View with
Parking Assistant Plus
Concept
The system provides assistance in parking and
maneuvering. The area around the vehicle is
shown on the Control Display.
General information
Several cameras capture the area from different
selectable perspectives. In addition, assistance
functions, for instance guidelines, can be faded
into t
Engine housing, Crankshaft drive
Engine housing
Cylinder head
The cylinder head is made of aluminum.
Only slight modifications have been made to the B46TU head compared to the B46.
Cylinder head
Crankshaft drive
Crankshaft
Comparison B46 crankshaft with B46TU crankshaft
The crankshaft of the B46TU engine have been revised. Materi
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