1. Before disassembly, it is necessary to remove the two fixing straps on the back of the rearview mirror so as to remove the fixing screws below. 2. You can see that the screws are coated with screw glue. 3. After removing the screws, the connecting module of the whole fixing belt is also removed. 4. After disassembling the shell, there is no wire connecting the motherboard with the rear shell. In order to cooperate with the external heat sink to effectively dissipate heat, it can be seen that a large area of graphite heat dissipation patch is attached to the inside of the cover plate. 5, the lower left corner is a GPS ceramic antenna, the upper left corner is a camera, the right side of the GPS antenna is a small speaker, and the small battery on the right side can be removed.