1, weak signal leads to location failure. This kind of situation often happens in places with serious shielding such as tunnels or underground parking lots, and the signal will automatically recover after it comes out to the ground;

2. The traffic runs out or the SIM card is in arrears. Like mobile phones, the network will be unusable after the SIM card of the car is in arrears, and GPS positioning will be more difficult after the network signal is disconnected.

3.GPS antenna falls off or is damaged. GPS antenna will affect the receiving strength of GPS signal to a great extent, and damage or falling off will inevitably affect GPS signal.

Car navigation always shows GPS positioning.

It is proved that the current position signal is not good when the positioning is always displayed. We can try to drive to an empty place and try to search for the signal, which will solve the problem with great probability. In fact, GPS signals almost disappear in underground garages or tunnels, which is normal. Secondly, if the GPS signal of the vehicle is always weak, it is suggested to check whether the GPS signal antenna is faulty.

Automobile navigation upgrade method

If your car doesn't support network upgrade, you can pull out the memory card, then copy the latest version of the downloaded navigation data into the navigation directory of the memory card, and finally insert the memory card into the car to automatically identify the latest navigation data. If your car supports online upgrade, then we will first open the phone hotspot, then connect the car to the hotspot, and finally click online upgrade in the navigation software.