
There are many reasons why a dash cam cannot display the rearview mirror, mainly including the dash cam not being connected to the vehicle, a damaged camera, the dash cam not being set to rearview mode, or the vehicle not being started. Below is a detailed analysis: The dash cam is not connected to the vehicle: If the dash cam is powered by a battery and not connected to the vehicle, it cannot activate the rearview function. In this case, the dash cam needs to be connected to the car, and the rearview function must be properly set up for normal display. The camera is damaged: If the rear camera of the vehicle is damaged, the dash cam will not be able to show the rear view. There are many reasons for camera damage, and it is necessary to visit a repair shop for professional inspection and repair. The dash cam is not set to rearview mode: Some dash cams must be set to rearview mode before they can display the rearview mirror. This situation is relatively simple to resolve—just set it up in advance. The car is not started: When the car is not started, the dash cam has no power. Only after starting the car and ensuring the dash cam receives power normally can the rearview function be used properly.


