Setting the center air vents

Setting the center air vents
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 up or down.
See also:
Diesel
Fuel grade
Only refuel with ULTRA-LOW SULFUR
DIESEL FUEL (ULSD, 15 ppm SULFUR
MAXIMUM). Using other diesel fuels could
result in increased wear and damage to the
engine and/or exhaust system.
...
Premium-grade unleaded gasoline
To ensure the longevity and full
performance of the engine, only premiumgrade
unleaded gasoline must be used.
If no premium-grade unleaded gasoline is
available and regular unleaded gasoline
mu ...
Problems with your vehicle
If you should experience a problem with your
vehicle, particularly one that you believe may
affect its safe operation, we urge you to
contact an authorized Mercedes-Benz Center
immediately to ...
