WARNING  
According to accident statistics, children are safer when properly restrained on the rear seats than on the front-passenger seat. Thus, we strongly recommend that children be placed in the rear seat whenever possible.
Regardless of seating position, children 12 years old and under must be seated and properly secured in an appropriately sized child restraint system or booster seat recommended for the size and weight of the child. For additional information, see the "Children in the vehicle" section.
A child's risk of serious or fatal injuries is significantly increased if the child restraints are not properly secured in the vehicle and/ or the child is not properly secured in the child restraint.

WARNING  
Canada only: children 12 years old and under may ride on the front seat if a BabySmart™ compatible child restraint system is installed on the front-passenger seat. Use only Mercedes-Benz approved BabySmart™ compatible child restraint systems. A BabySmart™ compatible child restraint system will deactivate the front-passenger front air bag when installed correctly. The front-passenger front air bag will not be deactivated if the child restraint systems that are installed are not BabySmart™ compatible or if BabySmart™ compatible child restraint systems are not installed correctly. If the front-passenger front air bag is deployed in a collision, the child will be struck by the air bag.
If this happens, serious or fatal injury will result.

► Adjust the seat and move the backrest to an almost vertical position.
► Pull the seat belt smoothly through belt sash guide 1.
► Without twisting it, guide the shoulder section of the seat belt across the middle of your shoulder and the lap section across your hips.
► Engage belt tongue 2 in buckle 3.

Seat-belt adjustment: if necessary, the driver's and front-passenger seat belts automatically adjust to the upper body.
► If necessary, adjust the seat belt to the appropriate height.
► If necessary, pull upwards on the shoulder section of the seat belt to tighten the belt across your body.

All seat belts except the driver's seat belt are equipped with a special seat belt retractor to securely fasten child restraint systems in the vehicle. For further information on special seat belt retractors, see.

For more information about releasing the seat belt with release button 4, see "Releasing seat belts".