158
Heating, Ventilation and Air conditioning
Some Climatronic controls may also be on the climate control system con-
tro l
panel located in the rear centre console. These controls are used to
make the appropriate settings for the rear seats. Control
butt on Additional information. Climatic
⇒ fig. 121; Climatr
onic
⇒ fig. 122. 1
Tem-
perat ur
e
... Climatic: rotate the control to adjust the temperature accord-
in
gly
.
Climatronic: the settings for the left hand side, the right-hand
side and the rear seats are made separately. Rotate the con-
trol to adjust the temperature accordingly. The temperature is
indicated on the outside ring. 2
Fan
... Climatic: setting 0, f
an and C
limatic switched off;
setting 4, fan set to maximum.
Climatronic: the Fan speed is automatically adjusted depend-
ing on the vehicle speed to avoid annoying noises. The fan
can also be adjusted manually. 3
Air dis-
tribution Climatic: rotate the continuous control to direct the airflow to
the de
s
ired area.
Climatronic: manually adjustable using the controls. Climatic: defro
s
t function. The airflow is directed at the wind-
screen. In this position, air recirculation is automatically
switched off or is not switched on. Climatronic: defro
s
t function. The air drawn in from outside
the vehicle is directed at the windscreen and air recirculation
is automatically switched off. To defrost the windscreen more
quickly, the air is dehumidified at temperatures over approxi-
mately +1.5°C (+35°F) and the fan runs at maximum output. The air is directed at the chest of driver and passengers by the
da
shbo
ard air vents. – Air distribution towards the footwell.
Air distribution towards the windscreen and the footwell.
AC Climatic, Climatronic: Pre
s
s the button to turn off/on cooling. Control
butt on Additional information. Climatic
⇒ fig. 121; Climatr
onic
⇒ fig. 122. Heated rear window: this only works when the engine is run-
ning and sw
it
ches off automatically after a maximum of 10 mi-
nutes. Air recirculation mode ⇒ pag
e 161. Climatronic: Autom
atic
air recirculation ⇒ page 161. Windscreen heating: only works when the engine is running
and swit
c
hes off automatically after a few minutes. Instant auxiliary heating on/off button
⇒ page 163. Switching
off
OFF Climatic: turn the fan switch to setting 0.
C
lim
atronic: press the OFF button or set the fan manually to
0. When the sy s
tem switches off, the OFF button will light up.
REAR Climatronic: pre
s
s the REAR button to adjust the climate con-
tro l
for the rear seats from the front. The REAR button will light
up when the fu nction i
s switched on. The settings for the rear
seats will be displayed. Press the button again to switch the
function off or do not touch any other button for around 10
seconds. REST Climatronic: pre
s
s the button REST to use residual heat. When
the engine i s
still warm but the ignition switched off, the heat
given off by the engine can be used to keep the passenger
compartment warm. The REST button will light up when the
fu nction i
s switched on. The function will switch off after
around 30 minutes and if the battery level is low.
159
Heating, Ventilation and Air conditioning Control
butt on Additional information. Climatic
⇒ fig. 121; Climatr onic
⇒ fig. 122. Climatronic: tran
sf
erring the driver's seat temperature set-
tings to the other seats. If the button is not lit up, the set
temper at
ure in the driver's seat will also apply to the other
seats.
Press the button or the temperature control for the front pas-
senger's seat or the rear seats to set them to a different tem-
perature. The button lights with an indicator.
Vehicles with auxiliary heating: observe the description of the AUTO button.
AUTO Automatic temperature, fan, and air distribution control.
WARNING
Never turn off the air fan for a long time or the air in the passenger com-
par tment
will not be refreshed.
● Stuffy or used air will increase fatigue and reduce driver and passen-
ger conc
entration possibly resulting in a serious accident. Note
● Not all Climatronic buttons are operational in REAR mode.
● The REAR button is locked in defrost mode.
Rear operation Fig. 123 Details of the
re
ar oper
ation. Rotary
contr o
l
⇒ fig. 123 Description
A
Temperature selector
B
Air flow regulator
Climate control user instructions The cooling system only works when the engine is running and fan is
swit
c
hed on.
The climate control system operates most effectively with the windows and
the sliding panoramic roof closed. However, if the vehicle has heated up af-
ter standing in the sun for some time, the air inside can be cooled more
quickly by opening the windows briefly. Safety First Operating instructions Practical tips Technical Data
160
Heating, Ventilation and Air conditioning
Keep the air vents in front of the windscreen free of snow, ice and leaves to
ens ur
e heating and cooling are not impaired and to prevent the windows
from misting over.
Adjustment for safer driving
When the air conditioning is switched on, the temperature and the air hu-
midity in the vehicle interior drop. Hence, when the outside air humidity is
high, the windows do not mist over and comfort for the vehicle occupants is
improved:
With Climatic
● Disable air recirculation mode ⇒ pag
e 161.
● Set the fan to setting 1 or 2.
● Turn the temperature control to the centre position.
● Open the air outlets in the dash panel ⇒ pag
e 161.
● Turn the air distribution control to the required position.
● Press the AC button to turn on cooling. The button will light up.
With C lim
atronic
● Press the AUTO button.
● Set the temperature to +22°C (+72°F).
● Open the air outlets in the dash panel ⇒ pag
e 161.
Switching the Climatronic temperature measuring unit
Press and hold the AC and
AUT
O buttons to switch the temperature display
between C el
sius and Fahrenheit.
Heat
The maximum heat output required to defrost windows quickly is only avail-
able when the engine has reached its normal running temperature.
The air conditioning system does not switch on
If the air conditioning system cannot be switched on, this may be caused by
the following: ●
The engine is not running.
● The fan i
s switched off.
● The climate control fuse has blown.
● The outside temperature is lower than approximately +3°C (+38°F).
● The climate control system compressor has been temporarily switched
off becau
se the engine coolant temperature is too high.
● Another fault in the vehicle. Have the climate control system checked by
a Tec
hnical Service.
Things to note
If the humidity and temperature outside the vehicle are high, condensation
can drip off the evaporator in the cooling system and form a pool under-
neath the vehicle. This is normal and does not indicate a leak!
Dust and pollen filter
The dust and pollen filter with its activated charcoal cartridge serves as a
barrier against impurities in the ambient air.
For the climate control system to work with maximum efficiency, the dust
and pollen filter must be replaced at the intervals specified in the Mainte-
nance Programme.
If the filter loses efficiency prematurely due to use in areas with very high
levels of air pollution, the filter must be changed more frequently than sta-
ted in the Service Schedule. Note
● The climate control system must left running for a few minutes to reach
the set t
emperature in the vehicle interior.
● After starting it, any residual humidity in the climate control system
coul
d mist over the windscreen.
● The air from the vents flows through the passenger compartment and
out through the outl
ets below the rear window. Do not cover these outlets
with items of clothing or other objects.
166
Heating, Ventilation and Air conditioning
Checking programming
If the timer h
as been switched on after switching the ignition off, the instant
on button will remain lit for around ten seconds.
WARNING
Never program the independent heating system to be activated and oper-
ated in c lo
sed, unventilated areas. The auxiliary heater fumes contain
carbon dioxide, an odourless and colourless toxic gas. Carbon monoxide
can cause people to lose consciousness. It can also cause death.
Operating instructions The auxiliary heater exhaust system located below the vehicle must be kept
cl
e
ar of snow, mud and other objects. The exhaust fumes must not be ob-
structed in any way. The exhaust fumes generated by the auxiliary heater
are removed via an exhaust pipe fitted underneath the vehicle.
On heating the vehicle interior, depending on the outside temperature the
warm air is first directed at the windscreen and then to the rest of the pas-
senger compartment through the air vents. If the air vents are turned to-
wards the windows, for example, the form of air distribution may be affec-
ted.
Depending on the outside temperature, the temperature at which the auxili-
ary heater warms the vehicle interior may be somewhat higher if the heating
or climate control temperature control is set to maximum before switching
the heating on.
Depending on the engine, vehicles with auxiliary heater may be fitted with a
second battery in the luggage compartment that is responsible for powering
the auxiliary heater. Cases in which the auxiliary heater will not switch on
●
The auxiliary heater requires about as much power as the dipped head-
lights. If the batt
ery charge is low, the auxiliary heater will switch off auto-
matically or will not even switch on. This avoids problems when starting the
engine.
● The heater will switch just once each time. The timer will also have to be
switc
hed back on every time it is required. Note
● Noise will be heard while the auxiliary heater is running.
● When the air humidity i
s high and the outside temperature low, the
heating sy
stem may evaporate condensation from the auxiliary heater. In
this case, steam may be released from underneath the vehicle. This is com-
pletely normal and there is no need to suspect a fault!
● If the auxiliary heater runs several times over a prolonged period, the ve-
hicle b
attery may run flat. To re-charge the battery, drive the vehicle for a
long distance. In general: drive for as much time as the auxiliary heating
was working.
167
Driving
Driving SteeringIntroduction The power steering is not hydraulic but electromechanical. The advantage
of thi
s
steering system is that it disposes of hydraulic tubes, hydraulic oil,
the pump, filter and other components. The electromechanical system
saves fuel. While a hydraulic system requires oil pressure to be maintained,
electromechanical steering only requires energy when the steering wheel is
turned.
With the power steering system, the assisted steering function automatical-
ly adjusts according to the vehicle speed, the steering torque and the wheel
turning angle. The power steering only works when the engine is running.
Additional information and warnings:
● Start and stop the engine ⇒ page 170
● V
ehicle battery ⇒ page 288
● T
ow-starting and towing away ⇒ page 340WARNING
If the power steering is not working then the steering wheel is much
more diffic u
lt to turn and the vehicle more difficult to control.
● The power steering only works when the engine is running.
● Never allow the vehicle to move when the engine is switched off.
● Never remove the key from the ignition if the vehicle is in motion. The
steerin
g may lock and it will not be possible to turn the steering wheel. Control and warning lamps lights up Possible cause Solution
(red) Power steering faulty. The steering system should be
chec
k
ed by a Technical Service
as soon as possible.
(yel-
lo w) Power steering operation re-
duced. The steering system should be
chec
k
ed by a Technical Service
as soon as possible.
If, after restarting the engine
and driving for a short distance,
the yellow warning light no lon-
ger comes on, it will not be nec-
essary to take the vehicle to a
specialised workshop. The vehicle battery was dis-
connect
ed and h
as been re-
connected. Drive for a short distance at 15 –
20 km/h.
Safety First Operating instructions Practical tips Technical Data
168
Driving flashes Possible cause Solution
(red) Fault in the steering column
electr
onic
lock.
Do not drive on!
Seek pr
ofessional advice.
(yel-
lo w) Steering column deviation. Gently turn the steering wheel to
and fro
. Steering wheel not unlocked
or lock
ed. Remove the key from the igni-
tion and then swit
c
h the ignition
back on. Check the messages
displayed on the instrument
panel at the same time.
Do not drive on, if the steering
column remains locked after the
ignition has been switched on.
You should obtain professional
assistance. Several warning and control lamps should light up for a few seconds when
the ignition is
sw
itched. This signals that the lamp is working properly. They
will switch off after a few seconds. WARNING
If the warning lamps and messages are ignored, the vehicle may stall in
traffic, or m a
y cause accidents and severe injuries.
● Never ignore the warning lamps or text messages.
● Stop the vehicle safely as soon as possible. CAUTION
Failure to heed the warning lamps and text messages when they appear
ma y
result in faults in the vehicle. Information on the steering Steering column electronic lock
If the driv
er's
door is opened before the ignition is switched off, the steering
column electronic lock is activated via the ignition key or the sensor built
into the door handle.
Mechanical steering lock
To prevent theft, we recommend you lock the steering before leaving the ve-
hicle. Please engage steering lock Unlocking the steering
Parking the vehicle
⇒ page 183. Turn the steering wheel slightly to
rel
e
ase the steering lock. Remove the key from the ignition. Insert the key in the ignition lock.
Turn the steering wheel slightly until
you he
ar the s
teering lock. Hold the steering wheel in this posi-
tion and swit
c
h on the ignition. Electromechanical power steering
With the po
w
er steering system, the assisted steering function automatical-
ly adjusts according to the vehicle speed, the steering torque and the wheel
turning angle. The power steering only works when the engine is running.
You should remember that you will need considerably more power than nor-
mal to steer the vehicle if the power steering is not working correctly or not
at all.
Counter steering assistance system
The counter steering assistance system helps the driver in critical situa-
tions. Additional steering power helps the driver when counter steering.
170
Driving
Stopping and starting the engine
Introduction Immobiliser display
When an inv
alid k
ey is used or in the event of a system fault, or Immo-
biliser on is displayed on the instrument panel. The engine cannot be star- ted.
Pushing or towing
For technical reasons, the vehicle must not be push- or tow-started. Jump
starting is preferable.
Additional information and warnings:
● Vehicle key set ⇒ pag
e 71
● Changing gear ⇒ pag
e 174
● Braking, stopping and parking ⇒ page 183
● St
eering ⇒ pag
e 167
● Start assist systems ⇒ pag
e 194
● Refuelling ⇒ pag
e 264
● Fuel ⇒ page 267
● Emer
gency locking and unlocking ⇒ page 314
● Jump s
tarting ⇒ pag
e 337
● Tow-starting and towing away ⇒ pag
e 340 WARNING
Turning off the engine while driving will make stopping the vehicle diffi-
cu lt; thi
s could even result in the loss of control causing an accident with
serious consequences.
● The assisted braking and steering systems, the airbag system, safety
belts and c
ertain safety equipment are only active while the engine is
running.
● The engine should only be switched off when the vehicle is at a
stand
still. WARNING
While the engine is running or starting it could help reduce the risk of se-
rious injur
y.
● Never start or leave the engine running in poorly ventilated or closed
spac
es. Exhaust gas contains carbon monoxide, a toxic, colourless and
odourless gas. Carbon monoxide can cause people to lose conscious-
ness. It can also cause death.
● Never leave the vehicle unattended if the engine is running. The vehi-
cle c
ould move off suddenly or something unexpected could happen re-
sulting in damage and serious injury.
● Never use start boosters. Cold start sprays could explode or increase
the engine speed u
nexpectedly.
171
Driving WARNING
The components of the exhaust system reach very high temperatures.
This c
ould cause a fire and considerable damage.
● Always park your vehicle so that no part of the exhaust system can
come in cont
act with flammable materials (such as wood, leaves, spilled
fuel, dried grass, etc).
● Do not apply additional underseal or anti-corrosion coatings to the
exhau
st pipes, catalytic converter, heat shields or the diesel particulate
filter.
Ignition lock Fig. 127 Vehicle key positions
Car keys
⇒ fig. 127 No key in the ignition lock: The steering lock may be activated.
0
Ignition off, all electrical components disconnected. Key can be re-
mov
ed fr
om the vehicle. Car keys
⇒ fig. 127 1
Ignition is switched on. Pre-heating of diesel engine. The steering
lock
c
an be unlocked. 2
Switch on the engine. Release the key when the engine has star-
ted.
When it
is released, the key returns to position 1 .
Safety First Operating instructions Practical tips Technical Data