Many cars today have built-in navigation, so they all have GPS positioning. However, some car series are a little old, or the manufacturer saves costs, and the car owner must modify the GPS positioning function by himself. So how much does it cost to install GPS positioning?

　　According to the diversification of functions, it can be divided into 1,000 yuan, 1,200 yuan, 1,500 yuan, and 2,000 yuan. Naturally, there are more expensive advanced equipment, but in general, you can install very good equipment for 2,000 yuan. Many car main bodies are now more cost-effective to install in the auto parts market, and the auto 4S shop basically needs to deduct the cost of around 5,000 yuan, and the price gap is very large.

　　What's wrong with car navigation without gps signal

　　1. A ceramic membrane with strong isolation capability is attached to isolate a part of the signal.

　　2. The signal cannot be found at the beginning, maybe the port number is wrong, try another map or change the port number.

　　3. The problem of the control module of the navigation bar, that is, the program process of the machine equipment itself is not brushed well or the parts are loose.

　　4. Vehicles driving in areas with poor signal such as the bottom of bridges, tunnel construction or mountainous areas are very likely to fail to find signals.

　　5. If the battery capacity is not enough, it will also cause the gps signal to be not very good, and even unable to find the signal.

　　6. Some car owners use the Android version of the map, which may cause abnormal retrieval signals.

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