How OnStar Functions

How OnStar Functions

OnStar is a service that comes standard in most new vehicles today. It does require a subscription, but the cost is relatively low when you look at the benefits. Older model cars can be equipped with OnStar, but the functionality may be limited. OnStar is a combination of services, including emergency calling, navigations, road side assistance, surveillance device, as well as vehicle diagnostic service. OnStar is available on all GM products. Many makes will include it as a standard feature, while lower end cars will offer it as an add-on product.

How it Works

OnStar uses a combination of different technologies to provide you with several services. First it relies on standard cell phone technology for communication. This is how the OnStar representatives are able to communicate with you by voice by a press of a button. It also utilizes a large network of satellites to track vehicles. In the event of an accident, a sensor signals to OnStar and your vehicles location is tracked and forwarded to the appropriate authorities. This is beneficial if you are in accident and can’t reach your phone to call for help.
Depending on the services you choose to subscribe to, the technology changes.

Brand new vehicles OnStar systems utilize sensors throughout the vehicle. This allows the OnStar system to track issues, such as maintenance alarms and driven speeds, and report back to you. A lot of police departments are relying more heavily on the technology OnStar provides. In case of an accident the vehicle information can be transmitted to the authorities, including your rate of speed, direction you were travelling, and other information that may be needed. While this is a great service, some people aren’t happy with the idea of ‘big brother’ watching over their every movement. Some features can be disabled or not subscribed to if they make you uncomfortable.


Available Services

OnStar provides several services. The most basic service is the Automatic Crash Response service. With this, emergency vehicles are dispatched automatically if the system senses an airbag has been deployed or an accident has occurred. You can upgrade your subscription to OnStar to include other useful features. Turn by turn navigation is available as an add on, allowing you to get to your destination without using a map. Hands free calling is also available, allowing you to safely make and receive phone calls directly from the OnStar dash system. Stolen vehicle assistance will track the location of your vehicle and report it to your local authorities. Newer cars can also use an ignition block to slow down or stop a stolen vehicle entirely. This needs to be requested by the local authorities, but can help reduce the chances of your vehicle getting in to an accident if the thief tries to flee in the car. Some newer vehicles also offer an onboard vehicle diagnostic center. This will alert you to any issues your vehicle may have, from low fluids to a brake issue.