document_0900452a81b1b9de.book Seite 110 Donnerstag, 26. Juli 2007 9:16 09
110
Heating and cooling
The synchronisation is cancelled as soon as any adjustments are
made on the front passenger's side.
The auxiliary ventilation also operates independently of the
engine. This feature can be used to cool the interior with the blower
when the vehicle is left parked in the sun.
The system will automatically activate either the auxiliary heating or
the auxiliary ventilation mode, depending on the actual tempera-
ture measured inside the car and the temperature you have set with
the air conditioner controls. It is possible to alter the temperature
setting while the auxiliary heating/ventilation is running.
Applies to vehicles: with diesel engine
Supplementary heater
– Set the Supplementary heater to auto or off.
Models with a diesel engine are equipped with a supplementary
heater to help warm up the interior more quickly. At outside temper-
atures below about +5 °C the supplementary heater is switched on
(and off) automatically when the engine is running, depending on
the coolant temperature, the temperature in the vehicle interior and
the temperature the heater is set to.
Switching on and off
There are two different ways of switching on the auxiliary
heating/ventilation system.
• Immediate start: You can switch the auxiliary heating/ventilation
on and off at any time via the sound system or MMI ⇒ page 111. You
can also switch the system on and off using the remote control
⇒ page 113.
• Switching on via timer: You can programme various start times
using the timers ⇒ page 111. However you must first activate the
timer before the auxiliary heating/ventilation system will switch on
automatically.
Auxiliary heating and auxiliary
ventilation
Applies to vehicles: with auxiliary heating - under development at the time of printing
The auxiliary heating/ventilation will switch itself off at the end of
the programmed running time. The running time can be set to 15,
30, 45 or 60 minutes ⇒ page 112.
Description
The auxiliary heating and ventilation systems heat and
cool the interior independently of the engine.
The auxiliary heating works in conjunction with the air condi-
tioner system, but does not rely on heat from the engine. Instead of
this, the system burns fuel. The system's main function is to warm
up the interior of the vehicle and to defrost the windows in cold
weather.
WARNING
• The auxiliary heating must not be allowed to run when the
vehicle is in a confined space because it can give off toxic fumes.
• To avoid any possible fire risk, never have the auxiliary heating
switched on when refuelling the vehicle.
The auxiliary heating system can be used both when the vehicle is
stationary and when driving (to provide extra heat while the engine
is warming up).
• Because of the high temperatures which occur when the auxil-
iary heating is running, make sure when parking the car that the
exhaust outlet under the car is not obstructed in any way and that
the exhaust gases do not come into contact with flammable mate-
rials (fire risk).
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