Activating/deactivating the child safety lock for the rear side windows
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.
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 side windows in the rear.
To activate/deactivate:
press button 
. Opening/closing the side window in the rear is possible:
With indicator lamp
lit: via the switch on the driver's door. With indicator lamp
off: via the switch on the corresponding rear door or driver's door.