BMW 3: Vehicle Sound Generator (VSG)
In the G20 PHEV an acoustic protection for pedestrians is used as standard. To protect pedestrians a distinctive sound created specially for electric BMW models is generated during electric driving.
In comparison with the predecessor model, this is no longer a K CAN3 control unit with integrated loudspeaker. The VSG control unit has been integrated into the Receiver Audio Module (RAM), which is therefore also responsible for actuation of the VSG loudspeakers.
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G20 PHEV, Vehicle Sound Generator
- VSG front loudspeaker
- Receiver Audio Module (RAM)
- VSG rear loudspeaker
When stationary and when driving up to approximately 18 mph (30 km/h), the RAM generates artificial engine noise via the VSG loudspeakers which gradually becomes quieter as the speed increases. The engine noise is the same when driving forwards and reversing.
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System wiring diagram for Vehicle Sound Generator (US version)
- VSG front loudspeaker
- Fuse for rear right power distribution box
- VSG rear loudspeaker
- Receiver Audio Module (RAM)
Due to legal requirements, the VSG is installed in every vehicle that has a purely electric drive.
Deactivation of the function via the iDrive menu is no longer possible.
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Adapted control units
It was necessary to adapt the IHKA to enable activation of the electric A/C
compressor (EKK) in all
operating conditions. The electric A/C compressor control unit communicates with
the IHKA via the
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Shift point indicator
Concept
The shift lights indicate the upshift point at which
the best possible acceleration can be achieved.
Functional requirement
Shift lights are shown when the SPORT or
SPORT PLUS driving program is activated.
Switching on/off
Steptronic Sport transmission:
1. Select SPORT or SPORT PLUS driving
Number of safety belts and
safety belt buckles
The vehicle is fitted with five safety belts to ensure
occupant safety. However, they can only offer
protection when adjusted correctly.
The two outer safety belt buckles of the rear
seats are intended for the persons sitting on the
left and right.
The center safety belt buckle of the rear seats is
