ignition MERCEDES-BENZ CLA 2014 Owner's Guide

XBrake lamp/rear fog lamp/backup
lamp:remove the corresponding bulb from
the bulb holder.
XInsert the new bulb into the bulb holder.
XTurn signal lamp:lightly press the bulb
into the bulb holder, turn it counter-
clockwise and remove it from bulb holder.
XInsert the new bulb into the bulb holderand
turn it clockwise.
XReinsert the bulb holderand engage on
retaining clips.
XRe-establish contact with the connector.
XClose the side trim panel (Ypage 114).
Windshieldwipers
Switching the windshield wipers on/
off
!Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield can
scratch the glass if wiping takes place when
the windshield is dry.
If it is necessary to switch on the windshield
wipers in dry weather conditions, always
use washer fluid when operating the
windshield wipers.
!If the windshield wipers leave smears on
the windshield after the vehicle has been
washed in an automatic car wash, wax or
other residues may be the reason for this.
Clean the windshield using washer fluid
after washing the vehicle in an automatic
car wash.
Combination switch
Windshield wiper off

Intermittentwipe, low (rain sensor
set to low sensitivity)
Intermittentwipe, high (rain sensor
set to high sensitivity)
Continuous wipe, slow
Continuous wipe, fast
Single wipe/To wipe the
windshield using washer fluid
XSwitch on the ignition.
XTurn the combination switch to the
corresponding position.
!Vehicles with a rain sensor: if the
windshield becomes dirty in dry weather
conditions, the windshield wipers may be
activated inadvertently. This could then
damage the windshield wiper blades or
scratch the windshield.
For this reason, you should always switch
off the windshield wipers in dry weather.
Vehicles witharain sensor:in the
or
position, the appropriate wiping
frequency is automatically set according to
the intensity of the rain. In theposition,
the rainsensor is more sensitive than in
the
position, causing the windshield
wipers to wipe more frequently.
If the wiper blades are worn, the windshield
will no longer be wiped properly. This could
prevent you from observing the traffic
conditions.Replace the wiper blades twice a
year, ideally in spring and fall.
Windshield wipers115
Lights and windshield wipers
Z

Replacing the wiper blades
Important safety notes
GWARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could
be trapped by the wiper arm.There is a risk
of injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
!To avoid damaging the wiper blades,
make sure that you touch only the wiper
arm of the wiper.
!Never open the hood if a windshield wiper
arm has been folded away from the
windshield.
Never fold a windshield wiper arm without
a wiper blade back onto the windshield.
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release
the windshield wiper arm without a wiper
blade and it falls onto the windshield, the
windshield may be damaged by the force of
the impact.
Mercedes-Benzrecommends that you have
the wiper blades changed ataqualified
specialist workshop.
Changing the windshield wiper blades
Removing the wiper blades
XRemove the SmartKey from the ignition
lock.
XFold the wiper arm away from the
windshield.
XPress both release clips.
XFold wiper bladein the direction of
arrow"away from wiper arm!.
XRemove wiper bladein the direction of
arrow.
Installing the wiper blades
XPosition new wiper bladewith
recess on lug.
XFold wiper bladein the direction of
arrow"onto the wiper arm, until retaining
clipsengage in bracket!.
XMake sure that wiper bladeis seated
correctly.
XFold the wiper arm back onto the
windshield.
116Windshieldwipers
Lights and windshield wipers

Problems with the windshield wipers
ProblemPossible causes/consequences and
Solutions
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.
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 at a qualified specialist
workshop.
The windshield washer
fluid from the spray
nozzles no longer hits
the center of the
windshield.
The spray nozzles are misaligned.
XHave the spray nozzles adjusted at a qualified specialist
workshop.
Windshield wipers117
Lights and windshield wipers
Z

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 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
specialist workshops: (Ypage 25).
Overview of climate control systems
Important safety notes
Observe the settings recommended on the
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
The automatic climate control regulates the
temperature and the humidity of the vehicle
interior and filters out undesirable
substances from the air.
Automatic climate control/dual-zone
automatic climate control is only operational
when the engine is running. Optimum
operation is only achieved with the side
windows and panorama roof with power tilt/
sliding panel closed.
The residual heat function can only be
activated or deactivated with the ignition
switched off (Ypage 131).
iVentilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature (Ypage 84).
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. With dual-zone automatic
climate control, gaseous pollutants and
odors will also be reduced.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.As it depends on
environmental conditions, e.g. heavy air
pollution, the interval may be shorter than
stated in the Maintenance Booklet.
iIt is possible that the dehumidification
function of the climate control system may
be activated automatically an hour after the
SmartKey has been removed. The vehicle
is then ventilated for 30 minutes.
120Overview of climate control systems
Climate control

ROnly available on vehicles for Canada:
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 only be activated
or deactivated with the ignition switched
off.
RVehicles with COMAND:if you change the
settings of the climate control system, the
climate status display appears for three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operating instructions. You will
see the currentsettings 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 140).
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
Activating/deactivating
Automatic climate control
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XTo switch on:turn controlclockwise to
the desired position (except position0)
(Ypage 121).
XTo switch off:turn controlcounter-
clockwise to position0(Ypage 121).
Dual-zone automatic climate control
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up. Airflow and air distribution are set to
automatic mode.
or
XPress thebutton.
The indicator lamp in thebutton goes
out. The previously selected settings are
restored.
XTo deactivate:press thebutton.
The indicator lamp in thebutton lights
up.
iDual-zone automatic climate control:
switch on climate control primarily using
thebutton.
Activating/deactivating cooling with
air dehumidification
Points to observe before use
If you deactivate the "Cooling with air-
dehumidification" function, the air inside the
vehicle will not be cooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
only deactivate the "Cooling with air-
dehumidification" function briefly.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and
Operating the climate control systems125
Climate control

Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences and
Solutions
The indicator lamp in
thebutton
flashes three times or
remains off. The
"Cooling with air
dehumidification"
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
Points to observe before use
The automatic function is only available in
conjunction with dual-zone automatic climate
control.
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the
temperature 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-
dehumidification" function, the air inside the
vehicle will not be cooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
only deactivate the "Cooling with air-
dehumidification" function briefly.
Setting climate control to automatic
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XSet the desired temperature.
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up. Automatic air distribution and airflow
are activated.
XTo switch to manual mode:press the
orbutton.
or
XPress theorbutton.
The indicator lamp in thebutton goes
out. Automatic air distribution and airflow
are deactivated.
Setting the temperature
Automatic climate control
You can set the temperature for the entire
vehicle.
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XTo increase/reduce:turn control
clockwise or counter-clockwise
(Ypage 121). Only change the temperature
setting in small increments. Start at 72 ‡
(22 †).
Dual-zone automatic climate control
Different temperatures can be set for the
driver's and front-passenger sides.
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XTo increase/reduce:turn controlor
clockwise or counter-clockwise
(Ypage 123). Only change the temperature
Operating the climate control systems127
Climate control

setting in small increments. Start at 72 ‡
(22 †).
Setting the air distribution
Automatic climate control
Air distribution settings
Directs air through the defroster vents
Directs air through the center and side
air vents
Directs air through the footwell air
vents
iYou can also activate several air
distribution settings simultaneously. To do
this, press multiple air distribution buttons.
The air is then directed through various
vents.
Setting the air distribution
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XPress one or more of the,,
buttons.
The corresponding indicator lamp lights up
briefly.
Dual-zone automatic climate control
Air distribution settings
Directs air through the defroster vents
Directs air through the center and side
air vents
Directs air through the footwell air
vents
Directs air through the defroster,
center and side air vents
Directs air through the defroster 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 position2in the
ignition lock (Ypage 137).
XPress theorbutton repeatedly
until the desired symbol appears in the
display.
Setting the airflow
Automatic climate control
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XTo increase/reduce:turn control
clockwise or counter-clockwise
(Ypage 121).
Dual-zone automatic climate control
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XTo increase/reduce:press theor
button.
Switching the ZONE function on/off
This function is only available with dual-zone
automatic climate control.
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up.
The temperature setting for the driver's
side is not adopted for the front-passenger
side.
XTo deactivate:press thebutton.
The indicator lamp in thebutton goes
out.
The temperature setting for the driver's
side is adopted for the front-passenger
side.
128Operating the climate control systems
Climate control

Defrosting the windshield
You can use this function to defrost the
windshield or to defrost theinside of the
windshield and the side windows.
iYou should only select the "Windshield
defrosting" functionuntil the windshield is
clear again.
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
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
Rairdistribution to the windshield and
front side windows
Rair-recirculation mode off
iThe "Windshield defrosting" function
automatically sets the blower output to the
optimum defrosting effect. As a result, the
airflow may increase or decrease
automatically after the button is pressed.
iYou can adjust the blower output
manually while the "Windshield defrosting"
function is in operation:
RAutomatic climate control: turn airflow
controlclockwise or counter-
clockwise (Ypage 121).
RDual-zone automatic climate control:
press theorbutton.
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
XDual-zone automatic climate control: press
thebutton.
The indicator lamp in the button goes
out. Airflow and air distribution are set to
automatic mode.
or
XAutomatic climate control: turn
temperature controlclockwise or
counter-clockwise (Ypage 121).
Dual-zone automatic climate control: turn
temperature controlorclockwise or
counter-clockwise (Ypage 123).
MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA.
MAX COOL is only operational when the
engine is running.
XTo activate:press the
button.
The indicator lamp in the button lights up.
XTo deactivate:press the
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 theinside
Automatic climate control
XActivate the"Cooling with air
dehumidification" function.
XIf the windows continue to fog up, activate
the "Windshield defrosting" function.
iYou should only select this setting until
the windshield is clear again.
Operating the climate control systems129
Climate control

Dual-zone automatic climate control
XActivate the"Cooling with air
dehumidification" function.
XActivate automatic mode.
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.
XSetthe air distribution toor.
iYou should only select this setting until
the windshield is clear again.
Rear window defroster
Activating/deactivating
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
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 137).
XPress thebutton.
The indicator lamp in thebutton lights
up or goes out.
130Operating the climate control systems
Climate control

Problems with the rear window defroster
ProblemPossible causes/consequences and
Solutions
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 137).
XTo activate:press thebutton.
The indicator lamp in thebutton lights
up.
iAir-recirculation mode is activated
automatically at high outside
temperatures. When air-recirculation mode
is activated automatically, the indicator
lamp in thebutton is not lit.
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 the
"Cooling with air dehumidification"
function is deactivated
Rafter approximately 30 minutes at
outside temperatures above
approximately 41‡(5†) if the "Cooling
with air dehumidification" function is
activated
Activating/deactivating the residual
heat function
The residual heat function is only available in
vehicles for Canada with 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 temperature that has been
set.
iThe blower will run at a low speed
regardless of the airflow setting.
iIf you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
Operating the climate control systems131
Climate control