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:
Top Tether
WARNING
Always lock the rear seat backrests in their upright position when the rear seats
are occupied by passengers. Lock the rear seat backrests in their upright position
before installing ...
High outside temperatures
If DEF heats up to over 122 °F (50 °C ) for
extended periods, e.g. as a result of direct
sunlight on the DEF reservoir, DEF can
decompose. Ammonia vapors develop as a
result.
WARNING
When o ...
Changing the battery
You require a CR 2025 3 V cell battery.
Take the mechanical key out of the
SmartKey.
Press mechanical key 2 into the opening
in the SmartKey in the direction of the
arrow until battery tra ...
