
No signal display on the reversing camera may be due to poor line contact or a damaged synchronizer. Below is a detailed introduction regarding the synchronizer: The function of the synchronizer: The synchronizer is a device inside the gearbox that ensures smooth gear engagement when shifting gears. The principle of engaging reverse gear: The synchronizer makes shifting easier by synchronizing the speed of the gears. However, reverse gear uses straight-cut gears and lacks a synchronizer. When engaging reverse gear, the reverse gear meshes with two other gears, allowing the car to reverse.


