If the rear door of a Mercedes-Benz GLC cannot be opened from the inside, it is usually due to the child lock being engaged. The owner needs to move the child lock on the side of the door in the opposite direction and turn it to the unlocked position to open the door. If the child lock is not engaged, then there might be an issue with the car, and it should be sent for repair promptly. Function of the Child Safety Lock: The child safety lock is used for the rear doors of the vehicle to prevent the danger of the doors being opened from the inside while the vehicle is moving. When this device is activated, even if the electronic central door lock is opened, the device remains in the locked state. To open the rear door, it can only be done from the outside switch when the central door lock is in the unlocked state. Solution for the Child Safety Lock: The car child safety lock, also known as the door lock child safety, is located on the rear door lock. Open the rear door, and below the lock, there is a small lever (safety mechanism). Move it toward the end with the child icon, then close the door. At this point, the door cannot be opened from the inside but only from the outside. Its purpose is to prevent active and unaware children from opening the door while the car is moving, thereby avoiding danger. In this case, the door can only be opened from the outside by an adult after the car is parked. If the rear door cannot be opened from the inside but can be opened from the outside, it is highly likely that the child safety lock is engaged. This happens when passengers in the rear seat accidentally activate the safety mechanism while getting in or out of the car. Simply reset it to resolve the issue.
