This problem comes up from time to time here on DCT and it can manifest with different models of camera. Often, as mentioned already, the problem is caused by the temporary loss of power to the accessory circuit when first engaging a vehicle's ignition switch. One possible solution is to install a 5V adjustable delay timer in the circuit that runs the dash cam, set to a delay long enough for the car to start before it powers up the camera. These delay relay timers are quite affordable, selling for a few dollars each and are available on eBay. There is even a new micro-USB version available that I wasn't previously aware of. (the blue one below)
These links are examples:
https://www.ebay.com/itm/141664216821
https://www.ebay.com/itm/251679163561
5V Conduction delay relay module
- high quality
delay turn-on module.
- high-performance timing CPU design.
- power indicator LED and switch trigger timing indication LEDs
-The input can be connected to AC 250V 10A / DC 30V 10A load
-Chrono-potentiometer regulation time,
adjustable delay from 0-24 seconds by default, or by changing the capacitance adjustment for longer times
Specification:
1.Module based on: NE555 chip.
2.Delay module:delay connect module
3.
Input voltage: DC5V-30V
4.
Control voltage: AC 0~250V / max. 10A,
DC 0~30V /
max. 10A operating voltage: 5 volts DC; (otherwise 5V optional)
5.Max. load: 2200W
Main Chip (NE555) Characteristics:
1. Timing from microseconds to long hours
2. Simple circuit design
3. Precision Pulse Generation / Timing,
4. Adjustable Duty Cycle
5. Burglar, alarm, building delay switch, sound and light control light switch.
6.
Delay powered vehicle equipment, to prevent large currents generated as the car starts.
7. Prevent simultaneous launch multiple devices cause burning appliances or fail to start.
Wide voltage 5V~30V, trigger delay relay module, timer module, conduction delay,
delay switch.
