Heating and ventilation system and air
conditioning system
2.
Check the air conditioning fuse
→ p. 193.
3.
Change the active combination filter → p. 243.
4.
If the fault persists, contact a specialist
workshop.
The heating cannot be switched on or only
works to
a limited extent.
The heating and defrosting/defrosting function
works most effectively when the engine is warm.
—
If the fault persists, contact a specialist
workshop.
The windows fog up
Glass fogs up when its temperature is lower than
the ambient temperature and the humidity of the
air is very high. Cold air can absorb less moisture
than warm air. This is why glass fogs up more
often during colder periods of the year.
—
To improve heating and cooling performance,
keep the air intake in front of the windscreen
free of ice, snow and leaves.
→ p. 243.
—
To allow air to circulate through the passenger
compartment from the front to the rear, leave
the ventilation slots at the rear of the luggage
compartment open.
—
Switch on the defrosting/defrosting function →
p. 89.
The temperature unit is not set
correctly.
—
Change the temperature units of all vehicle
temperature displays in the infotainment system
→ p. 27.
Water or steam under the vehicle
When the outside humidity and ambient
temperature are high, condensation may drip from
the refrigeration evaporator and form a small
puddle under the vehicle. This is normal and does
not mean that there is a leak!
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