Why doesn't the car door lock automatically when driving?
2 Answers
The issue of car doors not locking automatically while driving may be caused by failure to meet speed requirements, the auto-lock function being disabled in the vehicle's computer system, or a program malfunction. Automatic locking has speed conditions: Generally above 15 km/h, while some vehicles require speeds above 20 km/h. Automatic door locking scenarios: For example, when the transmission is shifted into D gear, the lock button will automatically engage to prevent accidental door opening. This locking method is used in some Chevrolet and Buick models. In other cases, when the driver applies the brake while driving, the doors will automatically lock - this approach is typically found in domestic or some entry-level vehicle models. There's also a less common locking method where doors automatically lock after the vehicle has been continuously driven for 10 seconds.
It's quite common for car doors not to automatically lock, and I often discuss this with car owners. First, check if it's a setting issue—many car models allow you to disable auto-locking in the central control menu, so browse through the settings menu. If the settings are correct, it's likely the door lock actuator is stuck or there's poor wiring contact, especially in older cars. Another possibility is a faulty speed sensor or a glitch in the control module, where the system still thinks the car is stationary even while moving. Also, an improperly closed trunk can affect the entire door lock system. Head to a repair shop to scan for error codes with a diagnostic tool—don’t try removing the door panel yourself, as those plastic clips are fragile!
