start stop button MERCEDES-BENZ CLS COUPE 2012 User Guide

!
Never open the bonnet if awindscreen
wiper arm has been folded awayf rom the
windscreen.
Never fold awindscreen wiper arm without
aw iper bladeb ack onto the windscreen.
Hold the windscreen wiper arm firmly when
you change the wiper blade. If you release
the windscreen wiper arm without awiper
bladea nd it falls onto the windscreen, the
windscreen may be damagedbyt he force
of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at aqualified
specialist workshop.
! To avoi ddamaging th ewindscree nwiper
blades, mak esure that you touc honly the
wiper arm of the windscreen wiper.
Replacing th ewiper blades Removing th
ewiper blades
X Remove the key fro mthe ignition lock or
tur nthe key to position 0(KEYLESS-GO).
X Fold the wiper arm away from the wind-
screen until it engages. X
Firmly press release knob :and pull the
wiper blade upwards from the wiper arm in
the direction of the arrow. Fitting the wiper blades
X
Position the new wiper blade in the retainer
on the wiper arm and slide it into place in
the opposite direction to the arrow.
The wiper blade audibly engages.
X Make sure that wiper blade is seated cor-
rectly.
X Fold the wiper arm back onto the wind-
screen. Problems with the windscreen wipers
The windscreen wipers are obstructed X
For safety reasons, you should remove the
key from the ignition lock.
or
X Switch off the engine using the Start/Stop
button and open the driver's door.
X Remove the cause of the obstruction.
X Switch the windscreen wipers back on.
The windscreen wipers are inoperative The windscreen wiper drive is malfunctioning.
X
Select another wiper speed on the combi-
nation switch.
X Have the windscreen wipers checked at a
qualified specialist workshop. 122
Windscreen wipersLights and windscreen wipers

There is
arisk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevan tfunctions are only available
wit hlimitations ,ornotat all. This could affect,
for example, the power steerin gand the brake
boosting effect .You will require considerably
more effort to steer and brake. There is arisk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause afire
R lose its hold function.
There is arisk of fire and an accident .Release
the parking brake fully before driving off.
! Warm up the engine quickly. Do not use
the engine' sfull performance until it has
reached operatin gtemperature.
Only set the automatic transmission to the
respective drive position swhen the vehicle
is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. Otherwise, you could damage the
drive train.
! AMG vehicles: at low engine oil temper-
atures (below +20 †), the maximum
engine speed is restricted in order to pro-
tectt he engine. To protec tthe engine and
maintain smoot hengine operation ,avoid
driving at full throttle when the engine is
cold. Key positions
Key g
To remove the key
1 Power supply for some consumers, such
as the windscreen wipers
2 Ignition (power supply for all consumers)
and drive position
3 To start the engine
i If the key does not belong to the vehicle,
it can still be turned in the ignition lock.
However, the ignition will not be switched
on. The engine cannot be started.
KEYLESS-GO General notes
R
Do not keep the KEYLESS-GO key together
with:
-electronic devices, e.g. amobile phone
or another key
- metallic objects, e.g. coins or metal film
R Do not keep the KEYLESS-GO key together
in metallic objects, e.g. ametal case.
This can affect the functionality of KEY-
LESS-GO.
Vehicles with KEYLESS-GO are equipped with
ak ey featurin ganintegrated KEYLESS-GO
start function and adetachable Start/Stop
button.
The Start/Stop button must be inserted in the
ignition lock and the key must be in the vehi-
cle. Driving
141Driving and parking Z

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 start simmedi-
ately.
Key positions with KEYLESS-GO Switching on the power supply
X
Position 0:ifStart/Stop button :has not
yet been pressed, this corresponds to the
key being removed from the ignition.
X Position 1:press Start/Stop button :.
The power supply is switched on. You can
now activat ethe windscreen wipers, for
example.
i If you then open the driver's door when in
this position, the power supply is deactiva-
ted.
Switching on the ignition
X Position 2(ignition): press Start/Stop but-
ton :twice.
The ignition is switched on.
i The ignition is switched off if:
R the driver's door is open and
R you press Start/Stop button :once
when in this position. Removing the Start/Stop button
X
Remove Start/Stop button :from ignition
lock ;.
You can remove the Start/Stop button from
the ignition lock and start the vehicle as nor-
mal using the key.
i You do not have to remove the Start/Stop
button from the ignition lock when you
leave the vehicle.
i When you insert Start/Stop button :
into ignition lock ;,the system needs
approximately two seconds recognition
time. You can then use Start/Stop but-
ton :. Starting the engine
Important safety notes G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is ar isk of fatal injury. Therefore never leave
the engine runnin ginenclosed spaces with-
out sufficient ventilation.
! Do not depress the accelerator pedal
when starting the engine.
General notes i
The catalytic converter is preheated for
up to 30seconds after acold start .The 142
DrivingDriving and parking

sound of the engine may change during this
time.
Automatic transmission X
Shift the transmission to position P.
The transmission position displayint he
multifunction displays howsP.
i You can also start the engine when the
transmission is in position N.
Starting procedurew ith the keyi
To start the engine using the key instead
of KEYLESS-GO, pull the Start/Stop button
out of the ignition lock.
X To startap etrol engine: turn the key to
position 3in the ignition lock
(Y page 141) and release it as soon as the
engine is running.
X To startad iesel engine: turn the key to
position 2in the ignition lock
(Y page 141).
The % preglow indicator lamp in the
instrumen tcluster light sup.
X When the %erlischt, den Schlüssel auf
Stellung 3(Ypage 141 )and release it as
soon as the engine is running.
i You can start the engine without preglow
if the engine is warm.
Using KEYLESS-GO to start th eengine G
WARNING
Your vehicle can be started using avalid KEY-
LESS-GO key. For this reason ,children should
never be left unsupervised in the vehicle.
Always tak ethe key with you when leavin gthe
vehicle, even if you are only leavin gitfor a
shor ttime.
i The Start/Stop button can be used to
start the vehicle manually without inserting
the key int othe ignition lock .The key must
be in the vehicle and the Start/Stop button
must be inserted in the ignition lock. This mode for startingt
he engine operates inde-
pendently of the ECO start/stop automatic
engine start function.
X Depress the brake pedal and keep it
depressed.
X To startap etrol engine: pressthe Start/
Stop button (Y page 141) once.
The engine starts.
X To start adiesel engine: press the Start/
Stop button (Y page 141)once.
Preglow is activated and the engin estarts. Pulling away
Automatic transmission G
WARNING
If the engin espeed is above the idling speed
and you engage transmission position Dor
R,t he vehicle could pull away suddenly. There
is ar isk of an accident.
When engagin gtransmission position Dor R,
always firmly depress the brake pedal and do
not simultaneously accelerate.
X Depress the brake pedal and keep it
depressed.
X Shif tthe transmission to position Dor R.
X Release the parking brake (Y page 160).
X Release the brake pedal.
X Carefully depress the accelerator pedal.
i It is only possible to shift the transmission
from position Pto the desired position if
you depress the brake pedal. Only then is
the parking lock released.
i The vehicle locks centrally once you have
pulleda way.The locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic lock-
ing feature (Y page 225). Driving
143Driving and parking Z

i
Upshifts take place at higher engine
speeds after acold start. This helps the
catalytic converter to reach its operating
temperature more quickly.
Hill start assist G
WARNING
After ashort time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is arisk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal.N ever
leave the vehicle when it is held by hill start
assist.
Hill start assist helps you when pulling away
forwards or in reverse on an uphill gradient.
It holds the vehicle for ashort time after you
have removed your foot from the brake pedal.
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal
and depress it before the vehicle begins to
roll.
X Take your foot off the brake pedal.
The vehicle is then held for about asecond.
X Pull away.
Hill start assist will not function if:
R you are pulling away on alevel road or a
downhill gradient.
R the transmission is in position N.
R the parking brake is applied.
R ESP ®
is malfunctioning. ECO start/stop function
Important safety notes G
WARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving.
There is arisk of acciden tand injury. If you wish to exit the vehicle, alway
sturn off
the ignition and secure the vehicle against
rolling away.
General notes The ECO start/stop function switches the
engine off automatically if the vehicle stops
moving.
When pulling away again, the engine starts
automatically. The ECO start/stop function
thereby helps you to reduce the fuel con-
sumption and emissions of your vehicle.
Ever
ytime you switch on the engine using the
key or the Start/Stop button ,the ECO start/
stop function is activated.
AMG vehicles: the ECO start/stop function
is only available in drive program C.
The system is operational when ECO symbol
¤ is shown in green in the multifunction
display.
AMG vehicles: the AMG menu in the multi-
function display additionally shows the Stop/ Start active message.
If conditions for automatic engine switch-off
have not been fulfilled (Y page 145), the
¤ symbol will be shown in yellow.
AMG vehicles: the AMG menu in the multi-
function display additionally shows the Stop/ Start inactive message.
If the ECO start/stop function has been man-
ually deactivated (Y page 145)oramalfunc-
tion has caused the system to be deactivated,
the ¤ symbol is not displayed.
AMG vehicles: in the AMG menu on the mul-
tifunction display, the Stop/Start active or
Stop/Start inactive display message
disappears.
If the engine is switched off and the ¤
symbol is shown in green in the multifunction
display, the engine has been switched off
automatically. However, all vehicle systems
remain active. 144
DrivingDriving and parking

Deactivating/activating th
eECO start/
stop function EC
Ob utton
X To switch off (except AMG vehicles):
press button :.
Indicator lamp ;on button :and the
¤ symbol in th emultifunction display go
out.
X To switch on (except AMG vehicles):
press button :.
Indicator lamp ;lights up. If all conditions
fo ra utomatic engin eswitch-off
(Y page 145) are fulfilled, the ¤symbol
is shown in green in th emultifunction dis-
play.
If no tall condition sfor automatic engine
switch-off (Y page 145) are fulfilled, the
¤ symbol is shown in yellow in th emul-
tifunction display. If this is th ecase, the
ECO start/sto pfunction is no tavailable.
X To switch off (AMG vehicles): press but-
ton :in drive program C.
or
X Switch to drive program S,S+ orM
(Y page1 52).
Indicator lamp ;on button :and the
¤ symbol in the multifunction display go
out.
The Stop/Start active or
Stop/Start inactive message in the AMG menu in the
multifunction display goes out. X
To switch on (AMG vehicles): press but-
ton :.
Indicator lamp ;lights up. If drive pro-
gram S,S+ orMis active, the automatic
transmission switches to drive program C.
If all conditions for automatic engine
switch-off (Y page145) are fulfilled, the
¤ symbol is show ningreen in the mul-
tifunction display.Ina ddition,the Stop/ Start active message is shown in the
AMG menu in the multifunction display.
If condition sfor automatic engin eswitch-
off have not been fulfilled, the (Y page 145)
¤ symbol will be shown in yellow. If this
is the case, the ECO start/stop function is
not available. In addition, the Stop/Start inactive message is shown in the AMG
menu in the multifunction display.
i If indicator lamp ;is off, the ECO start/
stop function has been deactivated man-
ually or as the result of amalfunction .The
engine will then not be switched off auto-
matically when the vehicle stops.
i Every time you switch on the engine using
the key or the Start/Stop button, the ECO
start/stop function is activated.
Automatic engine switch-off Method of operation
If the vehicle is braked to
astandstill in Dor
N,t he 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:
R the indicator lamp in the ECO button is lit
green.
R the vehicle is stationary.
R the outside temperature is within the com-
fort range.
R the engine is at normal operating temper-
ature. Driving
145Driving and parking Z

R
the se ttemperature for the vehicle interior
has been reached.
R the batter yissufficiently charged.
R the system detects that the windscreen is
not misted up when the air-conditioning
system is switched on.
R the bonnet is closed.
R the driver's door is closed and the driver's
seat belt is fastened.
If conditions for automatic engin eswitch-off
have not been fulfilled, the ¤symbol will
be shown in yellow.
AMG vehicles: the AMG menu in the multi-
function display additionally shows the Stop/Start inactive message.
i If you shift the transmission from Rto D,
the ECO start/stop function is available
again oncet he¤ symbol reappears in
green in the multifunction display.
i All vehicles (except AMG vehicles):
automatic engin eswitch-off can take place
am aximum of four times consecutively (ini-
tial stop and three subsequent stops). The
¤ symbol is shown in yellow in the mul-
tifunction display after the engin ehas been
started automatically for the fourt htime.
The automatic engin eswitch-off is availa-
ble oncea gain when the ¤symbol is
shown in green in the multifunction display.
i AMG vehicles: times which the engine
can be automatically switched off.
i You can also activat ethe HOLD function
when the vehicle is stationary if the engine
has been switched off automatically. It is
then not necessary to continue applying
the brakes during the automatic stop
phase. When you depress the accelerator
pedal, the engin estart sautomatically and
the brakin geffec toft he HOLD function is
deactivated. Depress the accelerator pedal
gently, as the engin emust be started first.
i Durin gautomatic engin eswitch-off ,the
climate control system only operates at a
reduced capacity. If you require full climate control capacity, the ECO start/stop func-
tion can be deactivated by pressing the
ECO button (Y
page 145).
Automatic engine start The engin
eisstarted automatically if:
R you switch off the ECO start/stop function
by pressing the ECO button.
R you release the brakes when in transmis-
sion position Dor N,w hen the HOLD func-
tion is not active.
R you depress the accelerator pedal.
R you engage revers egear R.
R you move the transmission out of position
P.
R you switch to drive program S,S+ orM
(AMG vehicles).
R you unfasten your seat belt or open the
driver's door.
R the vehicle start storoll.
R the brake system requires this.
R the temperature in the vehicle interior devi-
ates from the set range.
R the system detects moisture on the wind-
screen when the air-conditionin gsystem is
switched on.
R the battery's charge status is too low.
i Shifting the transmission to position P
does not start the engine. 146
DrivingDriving and parking

Problems with the engine
Problem Possible causes/consequences and
M Solutions
The engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X
Deactivat ethe HOLD function (Y page 179) or DISTRONIC
PLUS (Y page 177).
X Try to start the engine again. The engine does not
start. The starter motor
can be heard. R
There is amalfunction in the engine electronics.
R There is amalfunction in the fuel supply.
X Before attempting to start the engine again, turn the key in the
ignition back to position 0or press the Start/Stop button
repeatedly until all indicator lamps in the instrumen tcluster go
out.
X Try to start the engine again (Y page 142). Avoid excessively
long and frequent attempt stostart the engine, as this will drain
the battery.
If the engine does not start after several attempts:
X Consult aqualified specialist workshop. The engine does not
start
.The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge displays hows0. The fuel tank is empty.
X
Refuel the vehicle. 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.
X
Jump-start the vehicle (Y page 319).
If the engine does not start despite attemptstoj ump-start it:
X Consult aqualified specialist workshop. The starter motor was exposed to
athermal load that was too high.
X Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult aqualified specialist workshop. Driving
147Driving and parking Z

Problem Possible causes/consequences and
M Solutions
Vehicles with
apetrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is
amalfunction in the engine electronics or in amechanical
componentoft he engine management system.
X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
X Have the cause rectified immediately at aqualified specialist
workshop. The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be lit and a
warning tone may
sound. The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 299). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct, the engine radiator fan may be faulty.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
If the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic. Automatic transmission
Important safety notes
G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor
R,t he vehicle could pull away suddenly. There
is ar isk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do
not simultaneously accelerate. Selector lever
Overview of transmission positions Selector lever in AMG vehicles with
Pbutton
j Park position with parking lock
k Reverse gear
i Neutral
h Drive 148
Automatic transmissionDriving and parking

A
Neutral
Do not shift the transmission to
N
whil edriving. Otherwise, the auto-
matic transmission could be dam-
aged.
If ESP ®
is deactivated or faulty:
onl yshift the transmission to posi-
tion Nif the vehicl eisindangerof
skidding, e.g. on icy roads.
If you switch off the engine using
the key or the Start/Stop button,
the automatic transmission shifts
to neutral Nautomatically.
! Rolling in neutral Ncan lead to
damage to the transmission. 7
Drive
The automatic transmission
changes gear automatically. All
forward gears are available.
Changing gear
The automatic transmission shifts to the indi-
vidualg ears automaticallyw hen it is in trans-
mission position D.Gearshifting is deter-
mined by:
R as hift range restriction, if selected
R the selected drive program( Ypage 151)
R the position of the accelerator pedal
R the road speed Driving tips
Accelerator peda lposition Your style of driving influences how the auto-
matic transmission shift sgear:
R little throttle: early upshifts
R more throttle: late upshifts AMG vehicles When shifting down, the double-clutc
hfunc-
tion is active regardless of the currently selec-
ted drive program. The double-clutc hfunction
reduces load change reactions and is condu-
cive to asport ydriving style. The sound gen-
erated by the double-clutc hfunction depends
on th edrivep rogram selected.
Kickdown Use kickdown for maximum acceleration.
X
Depress th eaccelerato rpedal beyond the
pressure point.
The transmission shift stoalower gear
depending on the engin espeed.
X Ease off the accelerator pedal oncet he
desired speed is reached.
The automatic transmission shift sback up. Program selector button
General notes Example: program selector button
X
Press program selector button :repeat-
edly until the letter for the desired gearshift
program appears in the multifunction dis-
play.
The program selector button allows you to
choose between differen tdriving character-
istics. Automatic transmission
151Driving and parking Z