Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences andMSolutions
The indicator lamp in
the¿ button
flashes three times or
remains off. The "Cool-
ing with air dehumidifi-
cation" function cannot
be switched on.Cooling with air dehumidification has been deactivated due to a
malfunction.
XVisit a qualified specialist workshop.
Setting climate control to automatic
General notes
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
The automatic mode functions optimally
when the "Cooling with air dehumidification"
function is activated. If necessary, cooling
with air dehumidification can be deactivated.
If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi-
cle will not be cooled. The air inside the vehi-
cle will also not be dehumidified. The win-
dows can fog up more quickly. Therefore, only
deactivate the "Cooling with air-dehumidifi-
cation" function briefly.
Setting climate control to automatic
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XSet the desired temperature.
XTo activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow
are activated.
XTo switch to manual mode: press the
É orË button.
or
XPress the KorI button.
The indicator lamp in the Ãbutton goes
out. Automatic air distribution and airflow
are deactivated.
Setting the temperature
Different temperatures can be set for the
driver's and front-passenger sides. The set
temperature is automatically maintained at a
constant level.
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XTo increase/reduce: turn thumbwheel:
or E counter-clockwise or clockwise. Only
change the temperature setting in small
increments. Start at 72 ‡ (22 †).
Setting the air distribution
Air distribution settings
¯ Directs air through the defroster vents
P Directs air through the center and side
air vents
O Directs air through the footwell air
vents
S Directs air through the center, side and
footwell vents
120Operating the climate control systems
Climate control
bDirects air through the defroster, cen-
ter and side air vents
a Directs air through the defroster and
footwell vents
_ Directs air through the defroster, cen-
ter, side and footwell vents
iRegardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed if the adjusters are turned clockwise until they engage.
Setting the air distribution
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XPress the ÉorË button repeatedly
until the desired symbol appears in the dis-
play.
Setting the airflow
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XTo increase/reduce: press theKor
I button.
Switching the ZONE function on/off
XTo activate: press theábutton.
The indicator lamp in the ábutton lights
up.
The temperature setting for the driver's
side is not adopted for the front-passenger
side.
XTo deactivate: press theábutton.
The indicator lamp in the ábutton goes
out.
The temperature setting for the driver's
side is adopted for the front-passenger
side.
Defrosting the windshield
General notes
You can use this function to defrost the wind-
shield or to defrost the inside of the wind-
shield and the side windows.
iYou should only select the "Windshield
defrosting" function until the windshield is
clear again.
Activating/deactivating the defrosting
function for the windshield
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XTo activate: press the¬button.
The indicator lamp in the ¬button lights
up.
The climate control system switches to the
following functions:
Rhigh airflow
Rhigh temperature
Rair distribution to the windshield and
front side windows
Rair-recirculation mode off
Vehicles with windshield heating: the
windshield heating is switched on using the "Windshield defrosting" function.
iThe "Windshield defrosting" function
automatically sets the blower output to the optimum defrosting effect. As a result, the
airflow may increase or decrease automat-
ically after the ¬button is pressed.
iYou can adjust the blower output man-
ually while the "Windshield defrosting"
function is in operation:
Press the óorô button.
XTo deactivate: press the¬button.
The indicator lamp in the ¬button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated.
or
Operating the climate control systems121
Climate control
XPress theÃbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or
XTurn temperature control :orE counter-
clockwise or clockwise (
Ypage 117).
MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA.
The MAX COOL function only works when the vehicle is ready to drive.
XTo activate: press theÙbutton.
The indicator lamp in the button lights up.
XTo deactivate: press theÙbutton.
The indicator lamp goes out. The previously
selected settings are restored.
When you activate MAX COOL, climate con-
trol switches to the following functions:
Rmaximum cooling
Rmaximum airflow
Rair-recirculation mode on
Defrosting the windows
Windows fogged up on the inside
XActivate the ¿"Cooling with air dehu-
midification" function.
XActivate automatic mode Ã.
XIf the windows continue to fog up, activate
the¬ "Windshield defrosting" function.
iYou should only select this setting until
the windshield is clear again.
Windows fogged up on the outside
XActivate the windshield wipers.
XSet the air distribution to PorO.
iYou should only select this setting until
the windshield is clear again.
Rear window defroster
General notes
The rear window defroster has a high current draw. You should therefore switch it off as
soon as the rear window is clear. Otherwise,
the rear window defroster switches off auto-
matically after several minutes.
If the battery voltage is too low, the rear win-
dow defroster may switch off.
Switching on/off
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XPress the ¤button.
The indicator lamp in the ¤button lights
up or goes out.
122Operating the climate control systems
Climate control
To activate/deactivate "Immediate pre-
entry climate control"
XPress button:in the center console.
The blue or red indicator lamp in the button
lights up or goes out.
The colors of the indicator lamps in the button have the following meanings:
Re dH eating activated
Blue Cooling activated
Yellow Pre-entry climate control at depar- ture is preselected
Air vents
Important safety notes
GWARNING
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:
Rkeep the air inlet between the windshield
and the hood free of blockages, such as ice, snow or leaves.
Rnever cover the air vents or air intake grillesin the vehicle interior.
iFor optimal climate control in the vehicle,
open the air vents completely and set the
adjusters to the central position.
Setting the center air vents
XTo open the center air vents: turn the
adjuster in one of center air vents :coun-
ter-clockwise.
XTo close the center air vent: turn the
adjuster in one of center air vents :clock-
wise as far as it will go.
Setting the side air vents
:Side window defroster vent
;Side air vent
XTo open a side air vent: turn the adjuster
in side air vent ;to the left.
XTo close a side air vent: turn the adjuster
in side air vent ;clockwise as far as it will
go.
126Air vents
Climate control
Useful information
i
This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops (
Ypage 26).
Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for
the country in which you are currently driving
when operating the on-board computer.
GWARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The
operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
The on-board computer only shows messages
or warnings from certain systems in the mul-
tifunction display. You should therefore make sure your vehicle is operating safely at all
times.
If the operating safety of your vehicle is
impaired, pull over as soon as it is safe to do
so. Contact a qualified specialist workshop.
For an overview, see the instrument panel
illustration (
Ypage 31).
Displays and operation
Instrument cluster lighting
The light sensor in the instrument cluster
automatically controls the brightness of the
multifunction display. In daylight, the displays
in the instrument cluster are not illuminated.
The lighting in the instrument cluster, in the
displays and the controls in the vehicle inte-
rior can be adjusted using the brightness con-
trol knob.
The brightness control knob is located on the
bottom left of the instrument cluster
(
Ypage 31).
XTurn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to the
Ã,Tor
L position, the brightness is dependent
upon the brightness of the ambient light.
READY indicator
When the drive system is started and the
vehicle is ready to drive, READY indicator :
appears in the multifunction display. This indi-
cates that the vehicle is operational.
182Displays and operation
On-board computer and displays
Risk of explosion.
Fire, open flames and smoking are
prohibited when handlingthe bat-
tery. Avoid creating sparks.
Battery acid is caustic. Avoid con-
tact with skin, eyes or clothing.
Wear suitable protective clothing,
especially gloves, apron and face-
guard.
Rinse any acid spills immediately
with clear water. Contac taphysi-
cian if necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
Fo r safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to preven t vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event of
an accident.
In order for the battery to achieve the maxi-
mum possible service life, it must always be
sufficiently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the
vehicle. In this case, have the battery discon-
nected at a qualified specialist workshop. You
can also charge the battery withacharger
recommended by Mercedes-Benz. Contac ta
qualified specialist workshop for further infor- mation. Have
the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standing idle
for a lengthy period. Consult a qualified spe-
cialist workshop if you wish to leave your
vehicle parked for a long period of time.
Only replace a battery withabattery that has
been recommended by Mercedes-Benz.
Remove th eSm artKe
y if you park the vehicle
and do not require any electrical consumers.
The vehicle will then use very little energy,
thus conservin g battery power.
Afte r an interruption to the power supply, e.g.
due to a discharged battery, you must reset
th e clock using Audio 20 or COMAND. You
can find further information in the separate
operating instructions.
Charging the 12 ‑volt battery
GWARNING
During chargin g and jump-starting, explosive
gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do no t lean overabattery.
GWARNING
Battery aci d is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do
no t inhale any battery gases. Do not lean over
th e battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion .
GWARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Batteries289
Breakdown assistance
Z
Installing/removing the towing eye
Installing the towing eye
The brackets for the screw-in towing eye are
located in the bumpers. They are at the rear
and at the front, under covers :.
XRemove the towing eye from the stowage
space.
The towing eye is located in the stowage
well under the cargo compartment floor.
Vehicles with the TIREFIT kit: the to wing
eye is beneath the tire inflation compres-
sor.
XPress the mark on cover :inwards in the
direction of the arrow.
XTake cover :off the opening.
XScrew in the towing eye clockwise to the
stop.
Removing the towing eye
XUnscrew and remove the towing eye.
XPlace the towing eye in the stowage well
beneath the cargo compartment floor in
the cargo compartment (
Ypage 282).
XVehicles with the TIREFIT kit: put back the
tire inflation compressor.
Towing a vehicle with both axles on
the ground
It is important that you observe the safety
instructions when towing away your vehicle
(
Ypage 294).
XOn vehicles with KEYLESS-GO or the
KEYLESS-GO start function: you must
use the SmartKey instead of the Start /S top
button (
Ypage 132).
The transmission automatically shifts to posi-
tion Pwhen you open the driver's or front-
passenger door or when you remove the
Sm artKey from the ignition lock. In order to
ensure that the transmission stays in position
N when towing the vehicle, you must observe
the following points:
XMake sure that the vehicle is stationary.
XTurn the SmartKey to position 2in the igni-
tion lock.
XDepress and hold the brake pedal.
XSh ift the transmission to position N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch on the hazard warning lamps
(
Ypage 102).
XLeave the SmartKey in position 2in the
ignition lock.
If the 12 V battery indicator lamp lights up,
you must observe the following points:
XPull over and stop the vehicle safely as soon
as possible, paying attention to road and
traff iccond itions.
XShift the transmission to position P.
XApply the electric parking brake.
iIn order to signal a change of direction
when towing the vehicle with the hazard
warning lamps switched on, use the com-
bination switch as usual. In this case, only
the indicator lamps for the direction of
travel flash. After resetting the combina-
tion switch, the hazard warning lamp starts
flashing again.
296Towing
Breakdown assistance