Activating/deactivating the child safety lock for the rear doors
WARNING Risk of accident and injury due to children left unattended in the vehicle
If you leave children unattended in the vehicle, they may be able to set the vehicle in motion, for example by:
Releasing the parking brake.
Shifting the transmission out of park position
. Starting the engine.
In addition, they may operate vehicle equipment.
Never leave children and animals unattended in the vehicle.
When leaving the vehicle, always take the key with you and lock the vehicle. This also applies to mobile phones if the "Digital Car Key in the smartphone" function is activated via the Mercedes me connect web app.
WARNING This poses an increased risk of death due to heat stroke or exposure to cold in the vehicle
If persons – particularly children – experience prolonged exposure to extremely high or low temperatures, this poses a risk of injury or even fatal injury.
Never leave anyone – particularly children – unattended in the vehicle.
WARNING Risk of accident and injury due to children left unattended in the vehicle
If children are travelling in the vehicle, they could:
Open doors, thereby endangering other persons or road users.
Get out of the vehicle and be hit by oncoming traffic.
Operate vehicle equipment and become trapped, for example.
Always activate the child safety locks installed if children are travelling in the vehicle.
Never leave children unattended in the vehicle.
When leaving the vehicle, always take the key with you and lock the vehicle. This also applies to mobile phones if the "Digital Car Key in the smartphone" function is activated via the Mercedes connect me web app.
Child safety locks are available for the rear doors and for the rear side windows.
The child safety lock on the rear doors secures each door separately. The doors can no longer be opened from the inside.
Press the lever in direction 
(activate) or 
(deactivate).
(activate) or (deactivate). Make sure that the child safety locks are working properly.