2014 MERCEDES-BENZ CLS engine

Problems with the windshield wipers
ProblemPossible causes/consequences andSolutions
The windshield wipers
are jammed.
Leaves or snow, for example, may be obstructing the windshield
wiper movement.The wiper motor has been deactivated.
XFor safety reasons, you should remove the SmartKey from the
ignition lock.
or
XSwitch off the engine using the Start/Stop button and open the
driver's door.
XRemove the cause of the obstruction.
XSwitch the windshield wipers back on.
The windshield wipers
fail completely.
The windshield wiper drive is malfunctioning.
XSelect another wiper speed on the combination switch.
XHave the windshield wipers checked ataqualified specialist
workshop.
128Windshield wipers
Lights and windshield wipers

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Overview of climatecontrol systems
Important safetynotes
Observethe settings recommendedonthe
following pages. The windows could
otherwise fog up.
To preventthe windows from fogging up:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only
briefly
Rswitch on the cooling with air
dehumidification function
Rswitch on the defrost windshield function
briefly, if required
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances out of the air.
Climate control can only be operated when
the engine is running. Optimum operation is
only achieved with the side windows and roof
closed.
The residual heat function can only be
activated or deactivated with the ignition
switched off (Ypage 141).
iVentilate the vehicle forabrief period
during warm weather, e.g. using the
convenience opening feature (Ypage 89).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly.
iThe integrated filter filters out most
particles of dust and soot and completely
filters out pollen. It also reduces gaseous
pollutantsand odors.Aclogged filter
reduces the amountofair supplied to the
vehicle interior.For this reason, you should
always observe the interval for replacing
the filter, which is specified in the
Maintenance Booklet.Asitdepends on
environmental conditions, e.g. heavy air
pollution, the interval may be shorter than
stated in the Maintenance Booklet.
130Overview of climatecontrol systems
Climat ec ontrol

indicator lamp above thebutton goes
out.
RVehicles with COMANDMultimedia-
System:if you change the settings of the
climate control system, the climate status
display appears for approximately three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operating instructions.You will
see the current settings of the various
climate control functions.
ECO start/stop function
During automatic engine switch-off, the ECO
start/stop function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Ypage 152).
Overview of climate control systems133
Climate control

Information aboutusing 3-zone
automatic climate control
Automatic climate control
The 3-zone automatic climate control is only
available on vehicles for Canada.
The following contains instructions and
recommendations to enable you to get the
most out of your automatic climate control.
RActivate climate control using the\rand
buttons. The indicatorlamps above
the\randbuttons light up.
RIn automatic mode, you can also use the
buttontosetaclimate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM levelisrecommended.
RSet thetemperaturetof72‡(22 †).
ROnly use the"Windshield defrosting"
function briefly until thewindshield is clear
again.
ROnly use air-recirculation modebriefly, e.g.
if there are unpleasantoutside odorsor
when inatunnel. The windows could
otherwise fog up, since no fresh air is drawn
intothevehicleinair-recirculation mode.
RUse theZONEfunction to adopt the
temperature settingsonthedriver's side
for the front-passenger side and the rear
compartment as well. The indicatorlamp
above thebutton goes out.
RUse 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 only be activated
or deactivated with the ignition switched
off.
RVehicles with COMAND Multimedia-
System:if you change the settings of the
climate control system, the climate status
displayappears for approximately three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operating instructions. You will
see the current settings of the various
climate control functions.
ECO start/stop function
During automatic engine switch-off,the ECO
start/stop function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Ypage 152).
Operating the climate control
systems
Switching climate control on/off
Points to observe before use
When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could fog up.
Therefore, switch off climate control only
briefly
iActivate climate control primarily using
the\rbutton (Ypage 137).
Activating/deactivating
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
XTo switch on:press the\rbutton on
the control panel for the climate control.
The indicator lamp in the\rbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
XPress thebutton.
The indicator lamp in thebutton goes
out. The previously selected settings are
restored.
XTo switch off:press thebutton.
The indicator lamp in thebutton lights
up.
Operating the climate control systems135
Climat ec ontrol

Activating/deactivating cooling with
air dehumidification
Pointstoobserve beforeuse
If you deactivatethe"Cooling withair-
dehumidification"function,theair inside the
vehiclewill notbecooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
deactivatethe cooling with air-
dehumidification function only briefly.
The cooling with air dehumidification function
is only available when the engineisrunning.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and notasign that thereisa
malfunction.
Activating/deactivating
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up.
iWhen the "Cooling with air
dehumidification"function is activated,
one of the indicator lamps on the auxiliary
heating button will light up on vehicles with
auxiliary heating.
XTo deactivate:press thebutton.
The indicator lamp in thebutton goes
out. The "Cooling with air dehumidification"
function hasadelayed switch-off feature.
136Operating theclimatecontrol systems
Climat ec ontrol

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

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Notes on breaking-inanew vehicle
Important safety notes
New and replaced brakepads and discsonly
reachtheir optimum braking effect after
several hundred kilometers of driving.
Compensate for this by applyinggreater force
to thebrakepedal.
Thefirst 1000miles (1500 km)
The moreyou look after theengine when it is
new, themoresatisfied you will be with its
performanceinthefuture.
RYou should therefore driveatvarying
vehicle and engine speedsfor thefirst
1000 miles (1500 km).
RAvoid heavy loads, e.g.driving at full
throttle, during this period.
RChange gearingood time, before the
tachometer needle isof the way to the
red area of the tachometer.
RDo not manually shift toalower gear to
brake the vehicle.
RIf possible, do not depress the accelerator
pedal past the point of resistance
(kickdown).
ROnly select shift ranges3,2or1when
driving slowly, e.g. in mountainous terrain.
After 1000 miles (1500 km), you can increase
the engine speed graduallyand accelerate
the vehicle to full speed.
Additional breaking-in notes for AMG
vehicles:
RDo not drive faster than 85 mph
(140 km/h) for the first 1000 miles
(1500 km).
ROnly allow the engine to reachamaximum
engine speed of 4500 rpm briefly.
RChange gear in good time.
iYou should also observe these notes on
breaking in if the engine or parts of the drive
train on your vehicle have been replaced.
iAlways observe the respective speed
limits.
AMG vehicles with self-locking rear
axle differential
Your vehicle is equipped withaself-locking
differential on the rear axle. To protectthe
differential on the rear axle, carry out an oil
change afterabreaking-in phase of
2000miles (3000 km). This oil change
prolongs the servicelife of the differential.
Have the oil change carried out ataqualified
specialist workshop.
Driving
Important safetynotes
GWARNING
Objects in the driver's footwell can restrict the
pedal travel or obstructadepressed pedal.
The operatingand road safety of the vehicle
is jeopardized. There isarisk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficientclearancefor the pedals. Do not use
loose floormats.
146Driving
Driving and parking