BMW 3: Start/Stop button
BMW 3 Series G20 (2018-2025) Owners Manual / Driving / Start/Stop button
Concept
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Pressing the Start/Stop button
switches drive-ready state on or
off.
Steptronic transmission: the drive-ready state is switched on when you depress the brake pedal while pressing the Start/Stop button.
Pressing the Start/Stop button again switches drive-ready state back off and standby state is switched back on.
Driving away
1. Switch on drive-ready state.
2. Apply drive mode.
3. Release the parking brake.
4. Drive away.
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Auto Start/Stop function
Concept
The Auto Start/Stop function helps save fuel.
The system switches off the engine during a
stop, for instance in traffic congestion or at traffic
lights. Drive-ready state remains switched on.
Driving Dynamics Control
Concept
The Driving Dynamics Control influences the
driving dynamics properties of the vehicle.
The vehicle can be adjusted depending on the
situation using various driving modes.
General information
Parking brake
Concept
The parking brake is used to prevent the vehicle
from rolling when it is parked.
Safety information
Warning
An unsecured vehicle can begin to move and
possibly roll away. There is a risk of a
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Using this Owner's Manual
Orientation
The fastest way to find information on a particular
topic is by using the index.
An initial overview of the vehicle is provided in
the first chapter.
Validity of the Owner's Manual
Production of the vehicle
At the time of production at the plant, the printed
Owner's Manual is the most c
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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