Hands-Free Microphone
The hands-free microphone is connected to the Telematic Control Unit (TCU). There is no need to use the Bluetooth handset in hands-free mode.
During a phone call, your voice will be picked up by the hands-free microphone and fed to the TCU.
In many countries it is against the law to make a call with the handset whilst driving.
IMPORTANT:
Whilst driving, the driver should make calls in hands-free mode only.
It is legally permissible for the driver to make a call in hands-free mode using the hands-free microphone and loudspeakers in the vehicle while he is driving.