What is the reason for the dash cam shutting down immediately after ignition?

[JoannaDella]

The following are the specific reasons for the dash cam shutting down immediately after ignition: 1. Power supply failure: Since the dash cam draws power from the cigarette lighter or USB port, you can use other devices connected to the same port to check if it is a power supply issue. If it is a power supply failure, you need to go to a 4S shop for repair. 2. Wiring failure: Unplug the power plug of the dash cam and reconnect a new power cable. If the repeated restart issue persists, then wiring failure can be ruled out. 3. Memory card failure: Format the memory card. If the repeated restart issue persists, it may be due to poor contact of the memory card.

[BrielleAnn]

I've also encountered the issue where the dash cam shuts down when starting the car. After researching, I found it's mainly a power supply problem. During engine startup, the battery voltage drops significantly, and some dash cams are particularly sensitive to voltage fluctuations - they automatically power off when voltage falls below 11V. For vehicles using cigarette lighter power, non-essential devices get cut off during ignition, causing the dash cam to shut down. I recommend first trying a different USB port or using a power bank to eliminate wiring issues. If the problem persists, consider switching to a supercapacitor-equipped dash cam or installing a voltage stabilizer. During regular maintenance, it's best to periodically check battery voltage as aging batteries experience greater voltage fluctuations.

[ElliotFitz]

My dash cam used to shut down during startup, and it took me several tries to figure out why. The main issue is the momentary power interruption from the car battery during ignition. If the dash cam's built-in battery is old, it might not hold up during this brief power loss. Loose power plugs or a faulty car charger can also cause this, especially on bumpy roads where poor contact is more likely. I recommend first trying a different power cable for testing. If the dash cam's operating time shortens when the car is parked, it's probably due to a failing internal battery. Temperature also plays a big role; battery performance drops in winter, making shutdowns more frequent. If you're handy, you could replace the battery yourself, but be careful during disassembly to avoid damaging the circuit board.

[MargaretDella]

The most common cause of shutdown upon ignition is a power supply issue. During vehicle startup, the voltage drops from 12V to around 10V, which standard dash cams cannot withstand. Poor power contact is another frequent issue, where ignition vibrations cause plug loosening and power loss. There are three solutions: switch to a dash cam with a voltage stabilization circuit, install a step-down cable to draw power directly from the fuse box, or use a supercapacitor-powered model (more durable than lithium batteries). Also, ensure the car charger's output voltage matches; mismatched voltages can easily trigger overvoltage protection shutdown. Before any operation, remember to disconnect the power to prevent short circuits and fuse burns.

[MacJasmine]

The shutdown of a dash cam during startup mainly involves voltage drops and power interruptions. When the car ignites, the battery briefly disconnects, causing standard dash cams to shut down immediately without any buffer. Oxidized power cable connectors increase contact resistance, further raising the risk of power loss. It is recommended to choose a dash cam with a delayed shutdown function that can withstand power interruptions for up to 5 seconds. Additionally, installing a voltage stabilizer module or switching to the reading light power source can help. During each maintenance check, use a multimeter to test the battery voltage; if it falls below 11.6V, consider replacing it. For older vehicles, pay special attention to worn generator brushes, as they can cause voltage instability.

[StAustin]

The dashcam suddenly turns off when starting the vehicle, which I frequently encounter during car repairs. First, consider whether the cigarette lighter power supply is abnormal, as some vehicle models automatically cut off power to protect the circuit during startup. Second, it could be an issue with the dashcam itself—either the built-in lithium battery has degraded and can no longer hold a charge, or there's a fault in the charging/discharging circuit. It's recommended to first perform a system reset by long-pressing the reset button to rule out software issues. Then, check whether the car charger's output voltage is within the range of 5V±0.5V. Finally, consider installing a step-down cable with a delay function, drawing power from the ACC terminal in the fuse box for the most stable supply. Always disconnect the negative terminal of the battery to ensure safety during modifications.