
GLC has an automatic locking function. Introduction to the automatic locking function: The automatic locking function is determined by the vehicle's design configuration. Some car door lock module programs do not include this function, making it impossible to achieve. However, in some aftermarket remote locks, a separate additional module is connected to the vehicle's systems, such as gear position and ignition, to enable the automatic locking function. Potential hazards of the automatic locking function: Although the automatic locking function is convenient and practical, it carries potential risks. In the event of an accident, external rescuers may be unable to open the car doors, delaying rescue efforts.

















The GLC indeed has an automatic locking feature, which I rely on every time I exit the vehicle. As long as you carry the key and move more than about 1.5 meters away from the car, the doors will automatically lock and the side mirrors will fold, accompanied by an audible 'beep' as confirmation. This feature, called Convenient Closing, is particularly useful after rain when folding the mirrors, as it prevents getting your hands wet from manually locking the car. However, remember to enable this setting in the central control screen under Vehicle Settings - Central Locking - Automatic Locking. Some base models require an additional optional SmartKey system to support this function.

I've been driving the GLC for almost two years now, and the automatic locking feature has been quite convenient. When the key moves approximately two meters away from the vehicle, the system automatically locks the doors within thirty seconds, with the hazard lights flashing once to confirm. This feature is particularly useful in supermarket parking lots, allowing me to lock the car without fumbling for keys while carrying shopping bags. However, it's worth noting that the function may fail in areas with strong signal interference. Once, it didn't auto-lock in a hospital parking lot. It's advisable to periodically check if the 'Auto Lock' option remains enabled in the settings.

The GLC comes standard with a keyless entry system that includes automatic locking. In my actual test, the vehicle automatically locks when the key is about three meters away. This feature is especially convenient when paired with the hands-free tailgate. When carrying items, you can keep the key in your pocket, kick to open the tailgate, and walk away two meters for it to automatically lock. Remember to keep the key battery charged, as this function will fail when the coin battery is dead, and the dashboard will display 'Key Not Recognized.' Additionally, it's best to temporarily disable the automatic locking feature when driving through water.

The automatic locking feature is a practical function of the GLC. After enabling it in the vehicle settings on the central control screen, the car automatically locks when I step out, close the door, and away, with the side mirrors folding simultaneously. This system, based on UWB (Ultra-Wideband) technology, is more precise than standard keyless entry and has never malfunctioned, even in underground parking lots. However, it's important to note that the function resets after a complete power loss. For instance, after a battery drain and jump-start, the settings needed to be reconfigured. There are slight variations in functionality across different model years, with post-2020 models all supporting automatic locking upon exiting the vehicle.

My GLC300 with keyless start supports automatic locking when leaving the vehicle. The system detects the key leaving the car and executes the locking action after about ten seconds. You can also check the locking status via the Mercedes me mobile app. However, this feature has a minor drawback: it may mistakenly trigger locking when temporarily exiting at gas stations, requiring the engine to be turned off to resolve the issue. It's recommended for new owners to confirm whether the side mirrors are folded to verify successful locking, as this is more reliable than relying on audible alerts.


