2014 MERCEDES-BENZ CLS start stop button

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

Starting the engine
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshift the automatic transmission out of
parking position P.
Rstartingthe engine.
There isarisk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
isarisk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation.
GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heat up. There isarisk
of fire.
Carry out regular checkstomake sure that
there are no flammable foreign materials in
the engine compartmentorinthe exhaust
system.
!Do not depress the accelerator pedal
when startingthe engine.
General notes
iThe catalytic converter is preheated for
up to 30 seconds afteracold start. The
sound of the engine may change during this
time.
Automatic transmission
XShift the transmission to positionP.
The transmission position display in the
multifunction display showsP.
iYou can also start the engine when the
transmission is in positionN.
Starting procedurewith the SmartKey
iTo start the engine using the SmartKey
instead of KEYLESS-GO, pull the Start/
Stop button out of the ignition lock.
XTurn the SmartKey to position3in the
ignition lock (Ypage 147) and release it as
soon as the engine is running.
Using KEYLESS-GO to startthe engine
iThe Start/Stop button can be usedto
start the vehicle manually without inserting
the SmartKey into the ignition lock. The
Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in
the vehicle. This mode for starting the
engine operates independently of the ECO
start/stop automatic engine start function.
XDepress the brake pedal and keep it
depressed.
XPress the Start/Stop button once
(Ypage147).
The engine starts.
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Driving and parking
Z

Important safety notes
GWARNING
If theengineisswitched off automatically and
you exit thevehicle, theengine is restarted
automatically. The vehiclemay beginmoving.
There isarisk of accident and injury.
If you wish to exit the vehicle, alwaysturn off
the ignition and secure the vehicle against
rolling away.
General notes
ECO start/stop display
If thesymbol is shown in green in the
multifunction display,the ECO start/stop
function switches the engine off
automatically if the vehicle stops moving.
Every time you switch on the engine using the
SmartKey or the Start/Stop button,the ECO
start/stop function is activated.
If the ECO start/stop function has been
manually deactivated (Ypage 152) or a
malfunction has caused the system to be
deactivated, thesymbol is not
displayed.
AMG vehicles:theStop/Start activeor
Stop/Start inactivemessage in the AMG
menu in the multifunction display goes out.
AMG vehicles:the ECO start/stop function
is only available in drive programC.
For further information on automatic engine
switch-off (Ypage 151) and automatic
engine start (Ypage 152).
Automatic engine switch-off
General notes
If the vehicle is braked toastandstill inDor
N,the ECO start/stop function switches off
the engine automatically.
The ECO start/stop function is operational
and thesymbol is displayed in green in
the multifunction display,if:
Rthe indicator lamp in the ECO button is lit
green.
Rthe outside temperature is within the
comfortrange.
Rthe engine is at normal operating
temperature.
Rthe set temperature for the vehicle interior
has been reached.
Rthe battery is sufficiently charged.
Rthe system detectsthat the windshield is
not fogged up when the air-conditioning
system is switched on.
Rthe hood is closed.
Rthe driver's door is closed and the driver's
seat belt is fastened.
If conditions for automatic engine switch-off
have not been fulfilled, thesymbol will
be shown in yellow.
AMG vehicles:the AMG menu in the
multifunction display also shows theStop/
Start inactivemessage.
iIf you shift the transmission fromRtoD,
the ECO start/stop function is available
again once thesymbol reappears in
green in the multifunction display.
iAll of the vehicle's systems remain active
when the engine has been stopped
automatically.
iAll vehicles (apartfrom AMG
vehicles):automatic engine switch-off can
take placeamaximum of four times
consecutively (initial stop then repeated
three times). Thesymbol is shown in
yellow in the multifunction display after the
engine has been started automatically for
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Z

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.
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Z

Problems with the engine
ProblemPossible causes/consequences andSolutions
The engine does not
start. The starter motor
can be heard.
RThere isamalfunction in the engine electronics.
RThere isamalfunction in the fuel supply.
XBefore attempting to start the engine again, turn the SmartKey
in the ignition back to position0or press the Start/Stop button
repeatedly until all indicator lamps in the instrumentcluster go
out.
XTry to start the engine again (Ypage 149). Avoid excessively
long and frequent attemptstostart the engine as these will drain
the battery.
If the engine does not start after several attempts:
XConsultaqualified specialist workshop.
The engine does not
start.You cannot hear
the starter motor.
The on-board voltage is too low because the battery is too weak
or discharged.
XJump-startthe vehicle (Ypage 326).
If the engine does not start despite attemptstojump-start it:
XConsultaqualified specialist workshop.
The starter motor was exposed toathermal load that was too high.
XAllow the starter motor to cool down for approximately two
minutes.
XTry to start the engine again.
If the engine still does not start:
XConsultaqualified specialist workshop.
The engine is not
running smoothly and
is misfiring.
There isamalfunction in the engine electronics or inamechanical
componentofthe engine management system.
XOnly depress the accelerator pedal slightly.
XHave the cause rectified immediately ataqualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it.
The coolant
temperature gauge
showsavalue above
248‡(120 †).
The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant
to cool down.
XCheck the coolant level (Ypage 308). Observe the warning
notes as you do so and add coolant if necessary.
154Driving
Driving and parking

Engaging park positionPinAMG
vehicles
XWhen thevehicle is stationary, pressP
button.
Engaging reversegear R
!Only shiftthe automatic transmission to
Rwhen the vehicle is stationary.
XWhen the vehicle is stationary, depress the
brake pedal.
XPush the DIRECT SELECT lever up past the
first point of resistance.
Shifting to neutralN
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshift the automatic transmission out of
parking position P.
Rstartingthe engine.
There isarisk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
XWhen the vehicle is stationary, depress the
brake pedal.
XPush the DIRECT SELECT lever up or down
to the first point of resistance.
If the engine has been switched off, the
automatic transmission automatically shifts
toN.
If the automatic transmission is to remain in
neutralN,e.g. for washing the vehicle in car
washes withatowing device, please observe
the following instructions:
Using the SmartKey:
RMake sure that the ignition is switched on.
RWhen the vehicle is stationary, depress the
brake pedal and keep it depressed.
RShift to neutralN.
RRelease the brake pedal.
RIf the parking brake is engaged, release it.
RSwitch off the ignition and leave the
SmartKey in the ignition lock.
Using KEYLESS-GO:
RMake sure that the ignition is switched on.
RWhen the vehicle is stationary, depress the
brake pedal and keep it depressed.
REngage park positionP.
RRelease the brake pedal.
RRemove the Start/Stop button from the
ignition lock.
RInsert the SmartKey into the ignition lock.
RSwitch on the ignition.
RDepress the brake pedal and keep it
depressed.
RShift to neutralN.
RRelease the brake pedal.
RIf the parking brake is engaged, release it.
RSwitch off the ignition and leave the
SmartKey in the ignition lock.
Automatic transmission157
Driving and parking
Z

When leaving the vehicle, alwaystake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
!Always secure the vehicle correctly
against rolling away.Otherwise, the vehicle
or its drivetraincould be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally:
Rthe parking brake must be applied.
Rthe transmission must be in positionPand
the SmartKey must be removed from the
ignition lock.
Ron uphill or downhill gradients, the front
wheels must be turned towards the curb.
Switching off the engine
Important safety notes
GWARNING
The automatic transmission switches to
neutral positionNwhen you switch off the
engine. The vehicle may roll away.There is a
risk of an accident.
After switching off the engine, always switch
to parking positionP.Prevent the parked
vehicle from rolling away by applying the
parking brake.
Vehicles with automatic transmission
XApply the parking brake firmly.
XAll vehicles(except AMG vehicles):shift
the transmission to positionP.
Selector lever in AMG vehicles withPbutton
XAMG vehicles:pressPbutton.
Using the SmartKey
XTurn the SmartKey to position0in the
ignition lock and remove it.
The immobilizer is activated.
iIf you turn off the engine with the
SmartKey and then remove it from the
ignition lock or openafront door, the
automatic transmission shifts toP
automatically.
Using KEYLESS-GO
XPress the Start/Stop button (Ypage 147).
The engine stops and all the indicator
lamps in the instrumentcluster go out.
iWhen the driver's door is closed, this
corresponds to key position1.When the
driver's door is open,this corresponds to
key position0:"key removed".
iIf youturnoff the engine with the Start/
Stop button, the automatic transmission
shifts toN.Ifyou then open one of the front
doors, the automatic transmission shifts to
P.
iThe engine can be turned off while the
vehicle is in motion by pressing and holding
the Start/Stop button for about three
seconds. This function operates
independently of the ECO start/stop
automatic engine switch-off function.
168Parking
Driving and parking