Air conditioning
CONTROLS
Pre-cooling/pre-heating
WARNING
When the pre-heating is operating, high tem-
peratures can be generated under the body,
for example because of the exhaust system.
If flammable materials come into contact with
hot parts of the exhaust system, these mate-
rials may ignite. There is a risk of fire. Make
sure that no flammable materials, for exam-
ple leaves, grass, gas, petrol, oil or other
flammable objects, can come into contact
with vehicle parts when the pre-heating is
operating. Switch off the pre-heating before
refuelling.
Principle
The system consists of the pre-cooling and
pre-heating functions. It allows the tempera-
ture of the interior to be adjusted before the
journey starts. The interior is ventilated or
heated depending on the set temperature and
ambient temperature. When doing so, the sys-
tem uses any available residual heat from the
engine or the vehicle's fuel for generating heat.
General
The system can be switched on and off directly
or for a preselected departure time.
Operating requirements
The switch-on time is calculated based on the
outside temperature. The system will switch
on in good time before the preselected depar-
ture time.
▷
The vehicle is in rest state or standby state.
▷
The vehicle battery must be sufficiently
charged.
The system switches off automatically after a
while. It continues to run for a short time after it
has been switched off.
When activated, the pre-cooling/pre-heat-
ing uses power from the vehicle battery. As
a result, the maximum operating time is re-
stricted to protect the vehicle battery. After
the engine is started or after driving a short
distance, the system will be available again.
If outside temperatures are below 0 ℃, 32 ℉,
water vapour condenses and exits underneath
the vehicle.
▷
For pre-heating: the fuel tank capacity is
sufficient.
Safety information
If the fuel tank capacity is low and the ve-
hicle is parked on a slant, the pre-heating
function may be restricted.
DANGER
A blocked exhaust pipe or inadequate ven-
tilation can allow harmful exhaust fumes to
enter the vehicle. The exhaust fumes contain
pollutants which are colourless and odour-
less. In enclosed spaces, exhaust fumes can
also build up outside the vehicle. There is
a danger to life. Keep the exhaust pipe
clear and ensure sufficient ventilation. Do
not switch on the pre-heating in enclosed
spaces, for example closed garages.
▷
▷
Time and date are set correctly.
The air vents of the ventilation are open.
Turning the pre-cooling/pre-heating
on/off
1. "CLIMATE MENU"
2. "Settings"
3. "Pre-heating/cooling"
4. Select the desired setting.
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Online Edition for Part no. 01405A7D5D0 - II/23