Will the Car Door Lock Automatically If Not Locked?

[LeLucia]

No. Below is relevant information: How a car works: When the key is removed to cut off the power and the car door is closed, it is generally the driver who actively locks the car using the remote key. The reason is that most models on the market do not have the function of detecting the distance of the key's electronic signal. Additional information: Precautions: 1. Try to use the mechanical key to lock the car: When locking the car, it is still advisable to use the mechanical key, as this makes any signal jammer ineffective. If you don't mind the inconvenience, using the mechanical key more often can also save power and is safer than using a smart key. When using the mechanical lock, make sure the car door is properly closed and you hear the sound of the entire car locking; otherwise, it means the car was not successfully locked. 2. Try to park in a guarded parking lot and ask for a parking receipt: When parking for a long time, choose a guarded parking lot and ask for a parking receipt. This way, if any issues arise with the vehicle, you can ensure no loss occurs. However, you should still lock the car doors. Generally, in formal parking lots, criminals are less likely to enter.

[DelJameson]

Oh, I'm quite familiar with this. Many modern cars come with an auto-locking feature, but it doesn't mean the doors will lock automatically if they're left unlocked. For example, my car has a speed-sensing auto-lock function—when the car reaches about 20 km/h, the doors lock automatically, but this must be enabled in the settings. Some models also have a smart key feature where the doors lock automatically when you walk a certain distance away with the key. However, if the doors weren’t properly closed in the first place—say, you parked and walked away without locking them—most cars won’t auto-lock unless you have the Walk Away Auto Lock setting enabled. I’ve seen discussions on forums where many beginners misunderstand this—it really depends on the car model and configuration. I’d recommend downloading the owner’s app to check or testing it out: lock the doors, then unlock them and walk away to see if they relock. It’s always good practice to manually confirm the doors are locked when exiting the car.

[AlanaLynn]

As a stay-at-home mom who shuttles kids around daily, I'm particularly concerned about door safety. If the doors aren't locked, some premium cars do have automatic locking features - like locking when the key moves away from the vehicle. But not all cars have this! Many basic models require manual operation. I once forgot to lock my doors and fortunately the automatic feature saved me. The reality is, auto-lock typically activates when starting or driving the car - parked vehicles won't handle forgotten locks, leaving doors potentially open to theft or kids wandering in. I recommend checking your owner's manual to see if remote locking is available; meanwhile develop the habit of manually confirming locked doors before leaving - safety trumps convenience. Especially in rainy weather or crowded areas, don't gamble by relying solely on automation.

[VanRylee]

Last time I parked and forgot to lock the car, I later found it had locked itself—turns out the key fob's walk-away auto-lock feature was working. Not all cars support this; it depends on the model's configuration. For example, my SUV has it, but my friend's older sedan doesn't. Generally, the auto-lock function activates either after driving acceleration or when you walk a certain distance away. If the doors weren't locked at all—like if you didn't press the remote when parking—it might not automatically handle it. I recommend quickly checking the manual to set it up and test by walking away, and also get into the habit of manually locking to prevent issues.