
Dash cams record automatically. Once powered on, the dash cam conducts a self-check of its components and interfaces. After passing the self-check, a beep sound will notify the driver that the dash cam has started normal operation. During the entire driving process, it records all forward-facing footage and can also capture audio inside and outside the vehicle. Its primary purpose is to provide effective evidence in the event of a traffic accident. Dash cams are mainly categorized into portable dash cams and aftermarket in-dash DVD-integrated dash cams. Portable dash cams are further divided into rearview mirror dash cams and data dash cams, which feature good concealment, easy installation, detachability, low cost, and simple operation.

The dash cam automatically starts recording as soon as it's powered on, which I've experienced firsthand. Every time I get in the car and start the ignition, it begins working without pressing any buttons – the red light blinking on the windshield indicates it's recording. However, there are a few points to note: After parking, check if the device is connected to constant power. Some dash cams have parking monitoring features and will automatically wake up to record if the vehicle is bumped. Last time, I encountered a situation where the memory card was full and not cleared in time, resulting in failure to record at a critical moment. So, I recommend checking the storage space and recording quality weekly. The new models now even support real-time viewing via smartphone connection, making it much more convenient.

As someone who frequently drives long distances, a dash cam is a must-have device for me. Its design is very user-friendly, automatically starting loop recording the moment the vehicle starts, so there's no need to worry about turning it on. The key is to choose the right power supply method: using the cigarette lighter is the most convenient, but it cuts power when the engine is off; connecting to the fuse box for constant power allows for 24/7 monitoring, but you need to be careful about draining the battery. Once, I forgot to turn off the vibration wake-up function, and after parking on the roadside for three days, the battery was completely drained. Remember to enable the collision lock feature in the settings, which automatically saves the current video when encountering bumps.

After using dash cams from three brands, I found the auto-recording feature truly hassle-free. It automatically activates when the vehicle starts and stops after engine shutdown. However, new users often make two mistakes: first, failing to format the memory card causing loop recording failure; second, forgetting to disable microphone recording which violates privacy. I recommend checking lens cleanliness monthly – rain easily causes mud splashes affecting video quality. Many current models feature GPS track logging, which combined with mobile apps can reconstruct driving routes, proving particularly useful in accident scenarios.

I've had a dash cam installed for five years and am very familiar with its automatic recording mechanism: it starts when powered on and goes into sleep mode when powered off. But to maximize its effectiveness, pay attention to these details: First, buy a high-speed memory card as regular cards may drop frames; second, set the resolution properly in the settings, with 1080P being the most balanced; it's best to turn off parking surveillance at night, especially in winter when battery performance declines. Last week, I witnessed a rear-end collision where the other party refused to take responsibility, but fortunately, my dash cam automatically saved the emergency video. Regularly exporting and backing up videos is also essential.


