General notes

WARNING
If the vehicle becomes trapped in snow, ensure that snow is kept away from the exhaust pipe and from around the vehicle as long as the engine is running. Otherwise, poisonous carbon monoxide (CO) may enter the vehicle, resulting in loss of consciousness and even death.
To assure sufficient fresh air ventilation, open a window slightly on the side of the vehicle not facing the wind.

At the onset of winter, have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center.
Observe the notes in the "Winter operation" section.

    See also:

    Setting the front-compartment airflow using the front control panel
    You can select different airflow settings for the driver's and front-passenger sides as well as for the rear compartment. You can also use COMAND to set the airflow. Turn the SmartKey to positi ...

    4MATIC (permanent four-wheel drive)
    4MATIC ensures that all four wheels are permanently driven. Together with ESP®, it improves the traction of your vehicle whenever a drive wheel spins due to insufficient grip. WARNING If a ...

    Safety
    Typical of full-size luxury cars, the CL-Class hasn't been crash-tested by the Insurance Institute for Highway Safety, but it does have a boatload of safety features. There are nine airbags, inclu ...