
I
To switch the rear window heating on/off (Y page 135)
J To switch the ZONE function on/off (Y page 134)Information on operating
THERMOTRONIC automatic climate
control
Automatic climate control The following contains instructions and recom-
mendations to enable you to get the most out of
your THERMOTRONIC automatic climate con-
trol.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps in the
à and¿ buttons light up.
R Set the temperature to 22 †.
R Use the "Windscreen demisting" function only
briefly until the windscreen is clear again.
R Use the "Air-recirculation mode" function only
briefly, e.g. if there are unpleasant outside
odours or when in a tunnel. The windows
could otherwise mist up as no fresh air is
drawn into the vehicle in air-recirculation
mode.
R Use the ZONE function to adopt the temper-
ature settings on the driver's side for the
front-passenger side as well. The indicator
lamp in the ábutton goes out.
R Use the "Residual heat" function if you want to
heat or ventilate the vehicle interior when the
ignition is switched off. The "Residual heat"
function can be switched on or off only with
the ignition switched off.
R If you change the settings of the climate con-
trol system, the climate status display
appears for approximately three seconds at
the bottom of the screen in the multimedia
system display; see separate operating
instructions. You will see the current settings of the various climate control functions.
DYNAMIC SELECT button (except
Mercedes-AMG vehicles) You can choose between various drive programs
with the DYNAMIC SELECT button
(Y page 151). If you have selected drive program
E:
R when heating, the electrical heater booster is
deactivated and in the warming-up phase
heat output is reduced
R the rear window heating running time is
reduced
Depending on the configuration, the climate set-
tings can also be influenced in drive program I.
If you have selected drive program Cor S, the
climate settings are not affected.
ECO start/stop function During automatic engine stop, the climate con-
trol operates only at a reduced capacity. If you
require the full climate control output, you can
switch off the ECO start/stop function by press-
ing the ECO button (Y page 149). Operating the climate control sys-
tems
Switching the climate control on/off
General notes When climate control is switched off, the air
supply and air circulation are also switched off.
The windows could mist up. Therefore, switch
off climate control only briefly.
Air-conditioning system X
Turn the key to position 2in the ignition lock
(Y page 144).
X To switch on: turn controlAclockwise to
the desired position (except position 0)
(Y page 129).
X To switch off: turn controlAanti-clockwise
to position 0(Y page 129). Operating the climate control systems
131Climate control 

or
X Air-conditioning system: turn temperature
control :anti-clockwise or clockwise
(Y page 129).
THERMOTRONIC automatic climate control:
turn temperature control :orE anti-clock-
wise or clockwise (Y page 130). Demisting the windows
Windows misted up on the inside Air-conditioning system
X Activate the ¿"Cooling with air dehumid-
ification" function.
X If the windows continue to mist up, activate
the ¬ "Windscreen demisting" function.
i You should only select this setting until the
windscreen is clear again.
THERMOTRONIC automatic climate con-
trol
X Activate the ¿"Cooling with air dehumid-
ification" function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the ¬ "Windscreen demisting" function.
i You should only select this setting until the
windscreen is clear again. Windows misted up on the outside X
Activate the windscreen wipers.
X Set the air distribution to PorO.
i You should only select this setting until the
windscreen is clear again. Rear window heating
General notes The rear window heating has a high current
draw. You should therefore switch it off as soon
as the window is clear. The rear window heating otherwise switches off automatically after sev-
eral minutes.
If the battery voltage is too low, the rear window
heating may switch off.
Switching on/off X
Turn the key to position 2in the ignition lock
(Y page 144).
X Press the ¤button.
The indicator lamp in the ¤button lights
up or goes out.
Problems with the rear window heating Problem
Possible causes/consequences and
M MSolutions The rear window heating
has switched off prema-
turely or cannot be
switched on. The battery has not been sufficiently charged.
X Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window heating
can be switched on again. Activating/deactivating air-recircula-
tion mode
General notes You can deactivate the flow of fresh air tempo-
rarily if unpleasant odours are entering the vehi-
cle from outside. The air already inside the vehi- cle will then be recirculated. If you activate air-recirculation mode, the win-
dows can mist up more quickly, particularly at
low temperatures. Activate air-recirculation
mode only briefly to prevent the windows from
misting up.
The operation of air-recirculation mode is the
same for all control panels. Operating the climate control systems
135Climate control 

i
If you open the side windows or the pano-
rama sliding sunroof manually after closing
with the convenience closing feature, they
will remain in this position when opened using
the convenience opening feature. Switching the residual heat on/off
General notes The residual heat function is only available with
THERMOTRONIC automatic climate control.
It is possible to make use of the residual heat of the engine to continue heating the vehicle for
approximately 30 minutes after the engine has
been switched off. The heating time depends on
the set interior temperature.
i The blower will run at a low speed regardless
of the airflow setting.
i If you switch on the "Residual heat" function
at high temperatures, only the ventilation will
be activated. The blower runs at medium
speed.
i You cannot use the ventilation to cool the
vehicle interior to a temperature lower than
the outside temperature.
Activating/deactivating X
Turn the key to position gin the ignition lock
or remove it (Y page 144).
X Press the Ìbutton.
The indicator lamp in the Ìbutton lights
up or goes out.
The indicator lamp in the button indicates that the respective function is activated.
i Residual heat is switched off automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is switched on Auxiliary heating
Important safety notes G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed spaces which do not have an extrac- tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot.
Flammable materials such as leaves, grass or twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself
There is a risk of fire.
When the auxiliary heating is switched on,
make sure that:
R no flammable materials come into contact
with hot vehicle components
R the exhaust gas can escape from the
exhaust pipe unhindered
R the exhaust gas does not come into contact
with flammable materials.
The auxiliary heating and the exhaust gas outlet are situated in front of the right-hand front
wheel.
! Operating the auxiliary heating/ventilation
draws on the vehicle battery. After you have
heated or ventilated the vehicle a maximum of
two times, drive for a longer distance. Operating the climate control systems
137Climate control Z 

Switch the auxiliary heating on regularly – once
a month – for about ten minutes.
The auxiliary heating timer function calculates
the switch-on time according to the outside
temperature so that the vehicle is preheated by the departure time. When the departure time is
reached, the auxiliary heating continues to heat for a further five minutes and then switches off.
The auxiliary heating heats the air in the vehicle interior to the set temperature. This occurs with-out using the heat of the running engine. The
auxiliary heating is operated directly using the
vehicle's fuel. For this reason, the fuel tank must
be at least Õfull to ensure that the auxiliary
heating functions.
The auxiliary heating/ventilation automatically
adjusts to changes in temperature and weather conditions. For this reason, the auxiliary heating
could switch from ventilation mode to heating
mode or from heating mode to ventilation mode.
The auxiliary heating switches off when the
engine is switched off. The auxiliary ventilation
switches off when you turn the key to key posi-
tion 2(Ypage 144).
The auxiliary heating switches off automatically
after 50 minutes.
You cannot use the auxiliary ventilation to cool
the vehicle interior to a temperature lower than
the outside temperature.
Before switching on X
Turn the key to position 2in the ignition lock
(Y page 144).
X Set the desired temperature.
Auxiliary heating or ventilation can also be
switched on if the manually set climate control is
activated. Optimum comfort is attained by set-
ting the system to automatic mode. Set the tem-
perature to 22 †.
The auxiliary heating or auxiliary ventilation can be switched on/off using the button on the
centre console or the remote control.
The on-board computer can be used to specify
up to three departure times, one of which may
be preselected (Y page 230). Switching the auxiliary heating/venti-
lation on or off using the button on the
centre console General notes
The colours of the indicator lamps on button
:
signify the following:
R Blue: auxiliary ventilation activated
R Red: auxiliary heating activated
R Yellow: departure time preselected
(Y page 230)
Activating/deactivating the auxiliary
heating or auxiliary ventilation
X Press button :.
The red or blue indicator lamp in button :
lights up or goes out.
Switching the auxiliary heating/venti-
lation on or off using the remote control General notes
Your vehicle comes with one remote control.
You may use two additional remote controls for
your vehicle. For more information, please con-
tact a qualified specialist workshop.
Store the remote control for the auxiliary heat-
ing so that the auxiliary heating cannot be
switched on unintentionally. In particular,
ensure that the remote control for the auxiliary
heating is kept out of the reach of children.
The remote control has a range of approximately
300 metre s. Thisrange is reduced by:
R sources of radio interference
R solid objects between the remote control and
the vehicle 138
Operating the climate control systemsClimate control 

R
the remote control being in an unfavourable
position in relation to the vehicle
R transmitting from an enclosed space
If the remote control battery is low, the battery
symbol on the left of the display is shown as
empty. Replace the remote control battery and
observe the important safety notes when doing so (Y page 140).
Activating/deactivating the auxiliary
heating or auxiliary ventilation Remote control
:
Display
; u Switches the auxiliary heating or aux-
iliary ventilation on
Checks the status
= . Sets the departure time
? ^ Switches the auxiliary heating or aux-
iliary ventilation off
A , Sets the departure time
X To switch on: press and hold the ubut-
ton.
ON is shown in the remote control display.
X To switch off: press and hold the ^but-
ton.
OFF is shown in the remote control display.
Checking the status of the auxiliary heat-
ing or auxiliary ventilation
X Briefly press the ubutton.
The following messages may appear on the dis- play: Display Meaning
The auxiliary heating or
auxiliary ventilation is
deactivated. The auxiliary ventilation is
activated. The number on
the display shows the
remaining time (in
minutes) for the auxiliary
ventilation.
The auxiliary heating is
activated. The number on
the display shows the
remaining time (in
minutes) for the auxiliary
heating.
A departure time has been
activated. The departure
time appears on the dis-
play. A departure time has been
activated. The auxiliary
ventilation is currently
activated. The number on
the display shows the
remaining time (in
minutes) for the auxiliary
ventilation. If the vehicle is
not started after this time, the running time is
increased by five minutes. A departure time has been
activated. The auxiliary
heating is currently activa-
ted. The number on the
display shows the remain-
ing time (in minutes) for
the auxiliary heating. If the
vehicle is not started after this time, the running time
is increased by five
minutes. If the engine has not yet reached operating tem-
perature when it is started, the auxiliary heating running time is increased. The auxiliary heating
continues to run until the operating temperature
is reached. If this is the case, the ysymbol
appears in the remote control display and the
running time is zero minutes.
Setting the departure time
Make sure that the time set in the vehicle is
correct before setting the departure time (see
the separate operating instructions). Otherwise, the auxiliary heating may activate at the wrong Operating the climate control systems
139Climate control Z 

time and at an unsuitable location. When setting
the departure time, observe the important
safety notes (Y page 137).
X Briefly press the ubutton.
X Press the ,or. button repeatedly
until the time to be changed appears in the
display.
X Press the uand^ buttons at the same
time.
The Îsymbol in the remote control display
flashes.
X Press the ,or. button to set the
desired departure time.
i The longer you press the
,or. but-
ton, the faster the time changes.
X Press the uand^ buttons at the same
time.
The new departure time is stored.
Activating the set departure time X Briefly press the ubutton.
X Press the ,or. button repeatedly
until the desired departure time appears in
the display.
X Press the ubutton.
The Ísymbol, the departure time and,
depending on the selected departure time,
the letter A, BorCappear in the display.
Deactivating the set departure time
X Briefly press the ubutton.
The status of the auxiliary heating is shown on
the display.
X Press the .button.
The first departure time stored appears on the
display.
X Press the ^button.
OFF is shown in the remote control display.
Replacing the remote control battery Important safety notes
G
WARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal injury. Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in anenvironmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
Replacing the battery A CR2450 lithium battery is required when
replacing the battery.
X Press a pointed object into recess :.
X Slide battery cover ;backwards in the direc-
tion of the arrow.
X Insert new battery =with the lettering facing
upwards.
X Slide battery cover ;in the opposite direc-
tion to the arrow on the remote control until it engages. 140
Operating the climate control systemsClimate control 

Problems with the auxiliary heating/ventilation
Problem
Possible causes/consequences and
M
MSolutions FAIL¨ The signal transmission between the transmitter and the vehicle is
faulty.
X
Change your position in relation to the vehicle, moving closer if
necessary.
X Make another attempt to switch the auxiliary heating/ventilation on
or off using the remote control. FAIL The auxiliary heating cannot be switched on or has switched itself off.
The starter battery is not sufficiently charged.
X Charge the starter battery.
X Make another attempt to switch on the auxiliary heating/ventilation
using the remote control. The auxiliary heating cannot be switched on or has switched itself off.
The fuel tank content is below the reserve fuel level.
X Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using the
remote control. The auxiliary heating/ventilation cannot be switched on or has
switched itself off.
The auxiliary heating/ventilation is malfunctioning.
X Have the auxiliary heating/ventilation checked at a qualified spe-
cialist workshop. Air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior. In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen and
the bonnet free of blockages, such as ice,
snow or leaves
R never cover the vents or ventilation grilles in
the vehicle interior
i Optimal climate control function is achieved
by opening the air vents fully and setting the
adjusters to the middle position. Air vents
141Climate control Z 

S+
Sport Plus Particularly sporty trans-
mission settings
RACE
Maximum sportiness and
engine and transmission
settings suitable for the
racetrack Additional information on drive programs
(Y
page 159).
You can also change gear yourself using the
steering wheel gearshift paddles. Further infor-
mation on manual gearshifting (Y page 161).Manual transmission
Gear lever
! Only engage gear when the clutch pedal is
depressed.
! When shifting to
5thand 6thgear, you must
press the shift lever to the right. Otherwise,
you could shift unintentionally into 3rdor4th
gear and damage the engine or transmission.
If you shift down at too high a speed (trans-
mission braking), this can cause the engine to
overrev, leading to engine damage.
Do not use the clutch bite point to keep the
vehicle stationary on uphill gradients. There is otherwise a risk of damaging the clutch.
! On long and steep downhill gradients, espe-
cially if the vehicle is laden or towing a trailer,
you must select gear 1,2or3 in good
time. By doing so, you will make use of the
braking effect of the engine. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly. k
Reverse gear
1 -6
Forward gears Engaging neutral N
X
Depress the clutch pedal fully.
X Shift the gear lever to position N:. Engaging reverse gear
! Select reverse gear
konly when the vehi-
cle is stationary. You could otherwise damage the transmission.
X Pull the gear lever up, push it to the left and
then pull it back.
The ECO start/stop function is not available
when reverse gear is engaged. For further infor-
mation on the ECO start/stop function, see
(Y page 148). Manual transmission
153Driving and parking Z