When the car navigation system cannot receive satellite signals, the following methods can be used to try to solve the problem:

Check installation location: Ensure that the GPS antenna is installed in the ideal position, such as on the roof or above the front windshield, to reduce interference and improve signal quality.

Adjusting system settings: In the system settings of car navigation, there may be different satellite signal reception modes. Adjusting these settings to adapt to the current area and weather environment can help improve the chances of searching for available satellites.

Check the antenna and base: Regularly inspect the car navigation antenna and satellite base, promptly identify problems and repair or replace them to ensure the quality of satellite signal reception.

Avoid areas that affect signals: If the vehicle is located in tunnels or areas covered by high-rise buildings, the external environment will directly affect the search of the onboard system, and these areas should be avoided as much as possible.

Re enter the GPS information interface: If you were unable to find the satellite before, you can try exiting the car map and re entering the GPS information interface to see if you can find the satellite.

Update navigation software: If the car map needs to be updated, it can be directly updated to improve star search ability.

Reset GPS system: If none of the above methods work, you can try resetting the car GPS system, sometimes satellite signals can be detected.

Check for interference from vehicle electronic devices: Check for interference from vehicle electronic devices and attempt to eliminate it.

Upgrading navigation software: If the navigation software version is too low, it may be necessary to upgrade the navigation software.

Check port and baud rate: If the navigation map has been reinstalled before, it is necessary to check whether the port and baud rate of the navigation map are consistent with those of the navigator.

The above method can effectively solve the problem of the vehicle navigation system not receiving satellites. If the problem persists, it is recommended to go to a professional repair shop for further inspection and maintenance.