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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Warning function
Light in the exterior mirror
Acute warning
If there is a risk of collision, the light in the exterior
mirror flashes and the steering wheel vibrates.
A Check Control message is displayed at
the same time.
If necessary, an active steering intervention then
takes place to prevent collisions and main
Transferring digital keys
The vehicle owner can transfer a digital key for
his/her vehicle to another person with a compatible
smartphone via the BMW Connected app.
When a digital key is transferred, a transaction
number TAN will be generated. Another person
can pair the digital key in the vehicle with this
TAN and the Digi
