"Onboard navigation" refers to the built-in navigation system or technology present in vehicles or devices. It helps users find directions, maps, and guides them to their desired destinations. Full definition
It includes onboard navigation, stereo and a Bluetooth hands - free phone system. (cnet.com)
The system could provide additional advantages, as well — for example, by enhancing onboard navigation and facilitating proximity operations. (aerospace.org)
Most GM vehicles come equipped with standard or available onboard navigation systems. (gm.com)