Mersedes SUV Manuals

Setting the air vents

Mercedes-Benz M-Class / Mercedes-Benz M-Class Owners Manual / Climate control / Setting the air vents

Important safety notes

When operating the climate control, the air WARNING
When operating the climate control, the air that enters the passenger compartment through the air vents can be very hot or very cold (depending on the set temperature). This could cause burns or frostbite to unprotected skin in the immediate area of the air vents.

Always keep sufficient distance between unprotected parts of the body and the air vents. If necessary, use the air distribution adjustment to direct the air to air vents in the vehicle interior that are not in the immediate area of unprotected skin.

In order to ensure the direct flow of fresh air through the air vents into the vehicle interior, please observe the following notes: - keep the air inlet grille on the hood and in the engine compartment on the frontpassenger side free of blockages, such as ice, snow or leaves.

- never cover the air vents or air intake grills in the vehicle interior.

For virtually draft-free ventilation, adjust
For virtually draft-free ventilation, adjust the sliders of the air vents to the center position.

Setting the center air vents

1 Center air vent, left


1 Center air vent, left 2 Center air vent, right 3 Center vent thumbwheel, right 4 Center vent thumbwheel, left

- To open/close: turn thumbwheels 3 and 4 to the right or left.

Setting the side air vents

- To open/close: turn thumbwheel 3 up or


- To open/close: turn thumbwheel 3 up or down.

Setting the glove box air vent

When automatic climate control is activated, the glove box can be cooled, for instance to cool its contents. The level of airflow depends on the airflow and air distribution settings.

At high outside temperatures, open the air vent and activate the "cooling with air dehumidification" function.

Close the air vent if you do not wish to
Close the air vent if you do not wish to cool the glove box or you have not switched on cooling with air dehumidification.

Moisture-sensitive items stored in the glove box could otherwise be damaged.

1 Air vent thumbwheel


1 Air vent thumbwheel 2 Air vent

- To open: turn thumbwheel 1 counterclockwise.

- To close: turn thumbwheel 1 clockwise.

Setting the rear-compartment air vents

Setting the center vents in the rear compartment

Example: center vents in the rear compartment
Example: center vents in the rear compartment with rear control panel

1 Rear-compartment air vent thumbwheel 2 Rear-compartment air vent, right 3 Rear control panel
4 Rear-compartment air vent, left

- To open/close: turn thumbwheel 1 up or down.

Setting the rear-compartment side air vents

These rear-compartment side air vents are only available if your vehicle has 3-zone automatic climate control.

1 B-pillar air vent


1 B-pillar air vent
2 Thumbwheel for B-pillar air vent

- To open/close: turn thumbwheel 2 to the left or right.

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