Mercedes-Benz GLK-Class Service Manual page 88

THERMATIC 2-zone automatic air conditioning
In vehicles with THERMATIC 2-zone automatic air
conditioning, the interior temperature is adjustable
separately on the left and right sides. Air is blown in at
different temperatures via the respective left and right
vent openings to set different temperature levels as
required.
In automatic mode the blower speed is steplessly
controlled depending on the difference between the
specified and actual temperatures. Two interior
temperature sensors and the signal from the outside
temperature sensor are used to control the system
electronically.
At high outside temperatures, the system automati-
cally reduces the proportion of recirculated air to cool
the entire passenger compartment more rapidly and
to minimize the demand for cooling capacity.
A sun sensor records the intensity and direction of the
incident solar radiation and adjusts the interior
temperature by automatically changing the air flow
rate and the temperature of the air blown out through
the vents.
THERMATIC 2-zone automatic air conditioning
Introduction of the New GLK-Class (USA), Introduction into Service Manual for Model Series 204
A high-quality display with white LED indicators on the
AC operating unit displays the manual air distribution
settings and a total of seven manually selectable
blower settings.
On the THERMATIC operating unit, the entire climate
control system can be deactivated via a separate OFF
button in the upper row of buttons. The MAX COOL
button can be used to activate the maximum cooling
output at the touch of a button without first changing
the temperature setting. The THERMATIC system
features seven possible air distribution combinations
for the window ventilation, center area and footwell. It
is possible to quickly change the air flow rate manually
via two blower buttons.
Climate control
v 87