2014 MERCEDES-BENZ CLS lights

MAX COOL is only operational when the
engine is running.
XTo activate:press thebutton.
The indicator lamp in the button lights up.
XTo activate:press off-road button
again.
The indicator lamp goes out. The previously
selected settings are restored.
When you activate MAX COOL, climate
control 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
dehumidification function.
XActivate automatic mode\r.
XAdjust the side air ventssothat the warmed
air is directed to the side windows.
XIf the windows continue to fog up, activate
the "windshielddefrosting" function
(Ypage 139).
iYou should only select this settinguntil
the windshield is clear again.
Windows fogged up on the outside
XPress thebutton repeatedly until the
orsymbol appears in the
display.
XAdjust the side air ventssothat no air is
directed to the side windows.
Rear window defroster
Activating/deactivating
The rear window defroster hasahigh current
draw. You should thereforeswitch it off as
soon as the rear window is clear. Otherwise,
the rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off.
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XPress thebutton.
The indicator lamp in thebutton lights
up or goes out.
140Operating the climate control systems
Climate control

Problems with the rear window defroster
ProblemPossible causes/consequences andSolutions
The rear window
defroster has
deactivated
prematurely or cannot
be activated.
The battery has not been sufficiently charged.
XSwitch 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
defroster can be activated again.
Activating/deactivating air-
recirculation mode
Points to observe before use
You can deactivate the flow of fresh air if
unpleasant odors are enteringthe vehicle
from outside. The air already inside the
vehicle will then be recirculated.
If you switch on air-recirculation mode, the
windows can fog up more quickly, in
particular at low temperatures. Only use air-
recirculation mode briefly to prevent the
windows from fogging up.
The operation of air-recirculation mode is the
same for all control panels.
Activating/deactivating
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up.
iDual-zone automatic climate control: air-
recirculation mode is automatically
activated at high outside temperatures.
3-zone automatic climate control: air-
recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures.
When air-recirculation mode is activated
automatically,the indicator lamp above the
button does not light up. Outside air
is added after about 30 minutes.
XTo deactivate:press thebutton.
The indicator lamp in thebutton goes
out.
iAir-recirculation mode deactivates
automatically:
Rafter approximately five minutes at
outside temperatures below
approximately 41‡(5†)
Rafter approximately five minutes if
cooling with air dehumidification is
deactivated
Rafter approximately 30 minutes at
outside temperatures above
approximately 41 ‡(5†)if the "Cooling
with air dehumidification" function is
activated
Activating/deactivating theresidual
heat function
The residual heat function is only available in
vehicles for Canada with 3-zoneautomatic
climate control.
It is possible to makeuse of the residual heat
of the engine to continue heatingthe vehicle
for approximately 30 minutes after the engine
has been switched off.The heating time
depends on the temperature that has been
set.
Operating the climate control systems141
Climat ec ontrol

XTurn the SmartKey to position0in the
ignition lock or remove it (Ypage 147).
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up.
iIf the residual heat function is activated,
the windows may fog up on the inside.
iThe blower will run atalow speed
regardless of the airflow setting.
iIf you activatethe residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
XTo deactivate:press thebutton.
The indicator lamp in thebutton goes
out.
Residualheat is deactivated automatically:
Rafter approximately 30 minutes
Rwhen the ignition is switched on
Rif the battery voltage drops
Setting the 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 vicinityofthe air vents. There
isarisk of injury.
Make sure that all vehicle occupantsalways
maintainasufficient distancetothe air
outlets. 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 ventsinto 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 ventsorair intakegrilles
in the vehicle interior.
Setting the center air vents
Center air vent,left
Center air vent,right
$Center vent thumbwheel, right
!Center vent thumbwheel, left
XTo open/close:turn thumbwheels$
and!up or down.
Setting the side air vents
Defroster vent
Side air vent
$Control for side air vent
XTo open/close:turn thumbwheel$up or
down.
Setting the glove box air vent
!Close the air vent when heating the
vehicle.
At high outside temperatures, open the air
vent and activatethe "cooling with air
142Setting the air vents
Climate control

The Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in the
vehicle.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
the case if you are not depressing the brake
pedal.
If you depress the brake pedal and press the
Start/Stop button,the engine starts
immediately.
The Start/Stop button can be removed from
the ignition lock. Then, you can insert the
SmartKey into the ignition lock.
iYou do not have to remove the Start/Stop
button from the ignition lock when you
leave the vehicle. You should, however,
alwaystake the SmartKey with you when
leaving the vehicle. As long as the
SmartKey is in the vehicle:
Rthe vehicle can be started using the
Start/Stop button and
Relectrically powered equipment can be
operated.
Key positions with KEYLESS-GO
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. If an indicator lamp does not go out after
starting the engine or lights up while driving,
see (Ypage 266).
XInsert Start/Stop buttoninto ignition
lock.
iWhen you insert Start/Stop button
into ignition lock,the system needs
approximately two seconds recognition
time. You can then use Start/Stop
button.
Activating power supply
XPosition0:ifStart/Stop buttonhas not
yet been pressed, this corresponds to the
SmartKey being removed from the ignition.
XPosition1:press Start/Stop button.
The power supply is switched on. You can
now activatethe windshield wipers, for
example.
iIf you then open the driver's door when in
this position, the power supply is
deactivated.
Switching on the ignition
XPosition2(ignition): press Start/Stop
buttontwice.
The ignition is switched on.
iThe ignition is switched off when:
Rthe driver's door is opened and
Ryou press Start/Stop buttononce
when in this position.
Start/Stop button
$USA only
!Canada only
148Driving
Driving and parking

the fourth time. When thesymbolis
shown in green in the multifunctiondisplay,
automatic engine switch-off is again
possible.
iAMG vehicles:times which the engine
can be automatically switched off.
iThe HOLDfunction can also be activated
if the engine has been switched off
automatically. It is thennot necessary to
continue applying the brakes duringthe
automatic stop phase. When you depress
the accelerator pedal, the engine starts
automatically and the braking effect of the
HOLDfunction is deactivated.
Automatic engine start
The engine startsautomatically if:
Ryou switchoff the ECO start/stop function
by pressing the ECO button.
Ryou release the brakes when in
transmission positionDorNand when the
HOLDfunction is not active.
Ryou depressthe accelerator pedal.
Ryou engage reverse gearR.
Ryou movethe transmission out of position
P.
Ryou switchtodrive programS,S+orM
(AMG vehicles).
Ryou unfasten your seat belt or open the
driver's door.
Rthe vehicle startstoroll.
Rthe brakesystem requiresthis.
Rthe temperature in the vehicle interior
deviates fromthe set range.
Rthe system detectsmoisture on the
windshield when the air-conditioning
system is switched on.
Rthe charge level of the battery is too low.
iShiftingthe transmission to positionP
does not start the engine.
iIf you shift the transmission fromRtoD,
the ECO start/stop function is available
again once thesymbol reappears in
green in the multifunction display.
Deactivating/activating the ECO start/
stop function
ECO button
XTo switch off (except AMG vehicles):
press button.
Indicator lampand thesymbol in
the multifunction displaygoout.
XTo switch on (except AMG vehicles):
press button.
Indicator lamplights up. If all conditions
for automatic engine switch-off
(Ypage 151) are fulfilled,thesymbol
is shown in green in the multifunction
display.
If not all conditionsfor automatic engine
switch-off (Ypage 151) are fulfilled,the
symbol is shown in yellow in the
multifunction display. If this is the case, the
ECO start/stop function is not available.
XTo switch off (AMG vehicles):press
buttonin drive programC.
or
XSwitch to drive programS,S+orM
(Ypage 159).
Indicator lampand thesymbol in
the multifunction displaygoout.
TheStop/Start activeorStop/Start
inactivemessage in the AMG menu in the
multifunction displaygoes out.
152Driving
Driving and parking

XTo switchon(AMG vehicles):press
button.
Indicator lamplights up. If drive
programS,S+orMis active, the automatic
transmission switches to drive programC.
If all conditions for automatic engine
switch-off (Ypage 151) are fulfilled, the
symbol is shown in green in the
multifunction display. In addition, the
Stop/Start activemessage is shown in
the AMG menu in the multifunction display.
If conditions for automatic engine switch-
off (Ypage 151) have not been fulfilled, the
symbol will be shown in yellow. If this
is the case, the ECO start/stop function is
not available. In addition, theStop/Start
inactivemessage is shown in the AMG
menu in the multifunction display.
iIf indicator lampis off, the ECO start/
stop function has been deactivated
manually or as the result ofamalfunction.
The enginewill then not be switched off
automatically when the vehicle stops.
Driving153
Driving and parking
Z

XTurn drive program selectoruntil the
desired drive program appears in the
multifunction display in the speedometer.
The drive program indicator on drive
program selectorlights up in red.
CControlled
Efficiency
Comfortable, economical
driving
SSportSportydriving style
S+SportPlusExtremely sporty driving
style
MManualManual gear shifting
RSRACE
START
Optimal vehicle
acceleration from a
standstill
iFor further information on the automatic
drive program, see (Ypage 160).
Only change from automatic drive programC,
SorS+to manual drive programMwhen the
vehicle is stationary.
iThe automatic transmission shifts to
automatic drive programCeach time the
engine is started.
iRScannot be selected during normal
driving. For further information on RACE
START, see (Ypage 188).
Steering wheel paddle shifters
Left-hand steeringwheel paddle shifter
Right-hand steeringwheel paddle shifter
In the automatic drive program, you can
restrict or derestrictthe shift range by using
the steeringwheel paddle shifters
(Ypage 162).
iYou can only change gear with the
steeringwheel paddle shifterswhen the
transmission is in positionD.
Automatic drive program
Automatic drive programsEand S
Drive programE(drive programCon MAG
vehicles) is characterized by the following:
Rcomfort-oriented engine and automatic
transmissionsettings
Roptimal fuel consumption resultingfrom
the automatic transmission shifting up
sooner
Rthe vehicle pulling away more gently in
forward and reversegears, unless the
accelerator pedal is depressed fully
Rincreased sensitivity. This improves driving
stability on slippery road surfaces, for
example
Rthe automatic transmission shifting up
sooner.This results in the vehicle being
driven at lower engine speeds and the
wheels being less likely to spin
Drive programS(or, in the case of AMG
vehicles, drive programsSandS+)is
characterized by the following:
Rsporty engine and automatic transmission
settings
Rthe vehicle pulling away in first gear
Rthe automatic transmission shifting up
later
Rthe fuel consumption possibly being higher
asaresult of the later automatic
transmission shift points
160Automatic transmission
Driving and parking

Shift ranges
Introduction
iYou can restrictorderestrict the shift
range by using the steering wheel paddle
shifters.
When the automatic transmission is in
positionD,itispossible to restrictorexpand
the shift range (Ypage 162).
The shift range selectedisshown in the
multifunctiondisplay. The automatic
transmission shiftsonly as far as the selected
gear.
Shiftrange:
You can use the engine'sbraking
effect
\nYou can use the braking effect of
the engine on downhill gradients
and for driving:
Ron steep mountain roads
Rin mountainous terrain
Rin arduous conditions
To use the braking effect of the
engine on extremely steep downhill
gradients and on long downhill
stretches
Restricting theshiftrange
XPull the left-handsteeringwheel paddle
shifter.
The automatic transmission shifts down
one gear and restrictsthe shift range to the
relevant gear.
iIf the engine exceeds the maximum
engine speed when shifting down, the
automatic transmission protectsagainst
engine damage by not shifting down.
iIf the maximum engine speed for the shift
range is reached and you continue to
accelerate, the automatic transmission
shifts up, even if the shift range is
restricted. This prevents the engine from
overrevving.
Extending the shift range
XPull the right-hand steering wheel paddle
shifter.
The shift range is derestricted.
Clearing the shift range restriction
XPull and hold the right-hand steering wheel
paddle shifter untilDis shown again in the
multifunction display.
The automatic transmission shifts from the
current shift range directly toD.
Selecting the ideal shift range
XPull the left-hand steering wheel paddle
shifter and hold it in position.
The automatic transmission shifts to the
gear which allowsoptimum acceleration
and deceleration. To do this, the automatic
transmission shifts down one or more
gears.
Manual drive program(AMG vehicles
and vehicleswith AMG Sports
package)
Switching on the manualdrive program
XTurn the drive program selector
(Ypage 159) untilMappears in the
multifunction display.
The indicatorMon the drive program
selector lights up in red.
The manual drive program is only available for
AMG vehicles.
Manual drive programMis different from
drive programsSandS+with regard to
spontaneity, responsiveness and
smoothness of gear changes.
Manual drive programMcan be selected
using the drive program selector. In manual
drive programM,you can change gear using
162Automatic transmission
Driving and parking