Detailed description, Communication: OnStar
With the OnStar option the vehicle is equipped with a communication unit and an OnStar button which is used to summons help and to request assistance with respect to various services. In order to contact OnStar it is only necessary to press the OnStar button which is mounted either under the audio control panel or under the infotainment control panel, depending upon which system is fitted. The system will only function if the vehicle is within an area covered by AMPS (US).
When you activate the system, i.e. press the OnStar button, you will be put in touch with an advisor and can receive advice or help.
The system comprises a communication unit with GPS unit, GPS antenna, OnStar button, microphone and phone antenna. The GPS and phone antennae are integrated in the same unit and positioned on the roof of the car. The system uses the entertainment head unit to reproduce the voice advisor.
The system automatically contacts an alarm centre in the event of a collision that deploys the airbags. The position of the car is determined using GPS, assisting emergency services to quickly reach the location.
The communication unit, radio and control panel communicate with each other via the O-bus.
The communication unit has a flash memory, which means that additional features can be SPS programmed at a later date.