MERCEDES-BENZ CLS COUPE 2014 Owners Manual

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 26). Running-in notes
Important safety notes
In certain driving and driving safety systems,
the sensors adjust automatically while a cer-
tain distance is being driven after the vehicle has been delivered or after repairs. Full sys-
tem effectiveness is not reached until the end
of this teach-in procedure.
Brake pads/linings and discs that are either
new or have been replaced only achieve opti- mum braking effect after several hundred kil-
ometres of driving. Compensate for the
reduced braking effect by applying greater
force to the brake pedal. The first 1500 km
If you treat the engine with sufficient care
from the very start, you will be rewarded with excellent performance for the remainder of
the engine's life.
R Drive at varying road speeds and engine
speeds for the first 1500 km.
R Avoid overstraining the vehicle during this
period, e.g. driving at full throttle.
R Change gear in good time, before the rev
counter needle is Ôof the way to the red
area of the rev counter. R
Do not shift down a gear manually in order
to brake.
R Try to avoid depressing the accelerator
pedal beyond the point of resistance (kick-
down).
After 1500 km, you may gradually accelerate
the vehicle to full road and engine speeds.
Additional running-in notes for AMG vehicles:
R Do not drive at speeds above 140 km/ hfor
the first 1500 km.
R Only allow the engine to reach a maximum
engine speed of 4500 rpm briefly.
i You should also observe these notes on
running-in if the engine or parts of the drive
train on your vehicle have been replaced. AMG vehicles with self-locking rear
axle differential
Your vehicle is equipped with a self-locking
differential on the rear axle. Change the oil
after a running-in period of 3000 km to
improve protection of the rear axle differen-
tial. This oil change prolongs the service life of
the differential. Have the oil change carried
out at a qualified specialist workshop. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardises the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
Always fit the floormats securely and as pre-
scribed in order to ensure that there is always sufficient room for the pedals. Do not use
loose floormats and do not place several floor-mats on top of one another. 158
DrivingDriving and parking

G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk 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 a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only set the automatic transmission to the
respective drive positions when 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-
tect the engine. To protect the engine and
maintain smooth engine 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. How-
ever, the ignition will not be switched on.
The engine cannot be started.
KEYLESS-GO General notes
Vehicles with KEYLESS-GO are equipped with
keys featuring an integrated KEYLESS-GO
function and a detachable Start/Stop button.
The Start/Stop button must be inserted in the ignition lock and the key must be in the vehi-cle.
When you insert the Start/Stop button into
the ignition lock, the system needs approx-
imately two seconds recognition time. You
can then use the Start/Stop button.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only Driving
159Driving and parking Z

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 immedi-
ately.
A check which periodically establishes a radio
connection between the vehicle and the key
determines whether a valid key is in the vehi- cle. This occurs, for example, when starting
the engine.
To start the vehicle without actively using the
key:
R the Start/Stop button must be inserted in
the ignition lock
R the key must be in the vehicle
R the vehicle must not be locked with the key
or KEYLESS-GO (Y page 83)
R do not keep the KEYLESS-GO key together
with:
- electronic devices, e.g. a mobile phone
or another key
- metallic objects, e.g. coins or metal film
R do not keep the KEYLESS-GO key together
with metallic objects, such as a metal case,
for example
This can affect the functionality of KEY-
LESS-GO.
The engine can be switched off while the vehi-
cle is in motion by pressing and holding the
Start/Stop button for three seconds. This
function operates independently of the ECO
start/stop automatic engine switch-off func-
tion. Key positions with KEYLESS-GO :
Start/Stop button
; Ignition lock
When you switch on the ignition, all of 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 (Y page 288).
If Start/Stop button :has not yet been
pressed, this corresponds to the key being
removed from the ignition.
X To switch on the power supply: press
Start/Stop button :once.
The power supply is switched on. You can
now activate the windscreen wipers, for
example.
i If you then open the driver's door when in
this position, the voltage supply is switched
off.
X To switch on the ignition: press Start/
Stop button :twice.
The ignition is switched on.
The ignition is switched off if:
R the driver's door is opened and
R you press Start/Stop button :once when
in this position
Removing the Start/Stop button
You can remove the Start/Stop button from
the ignition lock and start the vehicle as nor-
mal using the key.
It is only possible to switch between Start/
Stop button mode and key operation when
the transmission is in position P.160
DrivingDriving an
d parking

X
Remove Start/Stop button :from ignition
lock ;.
You do not have to remove the Start/Stop
button from the ignition lock when you leave
the vehicle. You should, however, always take the key with you when leaving the vehicle. As
long as the key is in the vehicle:
R the vehicle can be started using the Start/
Stop button
R the electrically powered equipment can be
operated Starting the engine
Important safety notes G
WARNING
If children are left unsupervised in the vehicle, they can:
R open doors and endanger other persons or
road users
R climb out and be injured by the traffic
R operate vehicle equipment and, for exam-
ple, trap themselves.
Children could also set the vehicle in motion, for example by:
R releasing the parking brake
R shifting the automatic transmission out of
park position P
R starting the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle. Always
keep the key out of reach of children. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation. G
WARNING
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 is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
! Do not depress the accelerator when
starting the engine.
General notes i
Vehicles with a petrol engine:
the cat-
alytic converter is preheated for up to
30 seconds after a cold start. The sound of the engine may change during this time.
Automatic transmission X
Shift the transmission to position P.
The transmission position indicator in the
multifunction display shows P.
i You can start the engine in transmission
position Pand N.
Starting procedure with the key i
To start the engine using the key instead
of KEYLESS-GO, pull the Start/Stop button
out of the ignition lock.
X Vehicles with a diesel engine: turn the
key to position 2in the ignition lock
(Y page 159).
The % preglow indicator lamp in the
instrument cluster lights up.
X Turn the key to position 3in the ignition
lock (Y page 159) and release it as soon as
the engine is running.
i Vehicles with a diesel engine:
you can
start the engine without preglow if the
engine is warm. Driving
161Driving and pa rking Z

Using KEYLESS-GO to start the engine
i
The Start/Stop button can be used to
start the vehicle manually without inserting
the key into the ignition lock. The key must be in the vehicle and the Start/Stop button
must be inserted in the ignition lock. This
mode for starting the engine operates inde- pendently of the ECO start/stop automatic engine start function.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y page 159).
Vehicles with a petrol engine: the engine
starts.
Vehicles with a diesel engine: preglow is
activated and the engine starts. Pulling away
General notes G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
! If a warning tone sounds and the
Release park. brake
Release park. brake message appears
in the multifunction display, the parking
brake is still applied. Release the parking
brake.
i Depress the accelerator carefully when
pulling away.
i The vehicle locks centrally once you have
pulled away. 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 255).
i It is only possible to shift the transmission
from position Pto the desired position if
you depress the brake pedal. If the brake
pedal is not depressed, the DIRECT SELECT
lever can still be moved, but the parking
lock remains engaged.
i Upshifts take place at higher engine
speeds after a cold start. This helps the
catalytic converter to reach its operating
temperature more quickly.
Hill start assist Hill start assist helps you when pulling away
forwards or in reverse on an uphill gradient. It holds the vehicle for a short 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. G
WARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if: R you are pulling away on a level road or a
downhill gradient
R the transmission is in position N
R the parking brake is applied
R ESP ®
is malfunctioning 162
DrivingDriving and parking

ECO start/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicle is stop-
ped under certain conditions.
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.
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 a risk of accident and injury.
If you wish to exit the vehicle, always turn 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 automati-
cally if the vehicle stops moving.
The ECO start/stop function is activated
whenever you switch on the engine using the
key or the Start/Stop button.
If the ECO start/stop function has been man- ually deactivated (Y page 164) or a malfunc-
tion has caused the system to be deactivated, the ¤ symbol is not displayed.
AMG vehicles: theStop/Start active
Stop/Start active or
Stop/Start inactive
Stop/Start inactive message in the AMG
menu in the multifunction display goes out. AMG vehicles:
the ECO start/stop function
is only available in drive program C.
For further information on automatic engine
switch-off (Y page 163) and automatic
engine start (Y page 164).
Automatic engine switch-off General notes
If the vehicle is braked to a standstill in
Dor 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:
R the indicator lamp in the ECO button is lit
green
R the outside temperature is within the range
that is suitable for the system
R the engine is at normal operating temper-
ature
R the set temperature for the vehicle interior
has been reached
R the battery is sufficiently 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 the conditions for automatic engine switch- off are not all fulfilled, the ¤symbol is lit
yellow.
AMG vehicles: the AMG menu in the multi-
function display additionally shows the Stop/ Stop/
Start inactive
Start inactive message.
i If you shift the transmission from
Rto D,
the ECO start/stop function is available
again once the ¤symbol reappears in
green in the multifunction display.
i All of the vehicle's systems remain active
when the engine is switched off automati-
cally. Driving
163Driving and parking Z

i
All vehicles (except AMG vehicles):
automatic engine switch-off can take place a maximum of four times consecutively (ini-
tial stop, then three subsequent stops). The ¤ symbol is shown in yellow in the mul-
tifunction display after the engine has been
started automatically for the fourth time.
When the ¤symbol is lit green in the
multifunction display, automatic engine
switch-off is again possible.
i AMG vehicles:
the number of consecu-
tive automatic engine stops is unlimited.
i The HOLD function can also be activated
if the engine has been switched off auto-
matically. It is then not necessary to con-
tinue applying the brakes during the auto-
matic stop phase. When you depress the
accelerator pedal, the engine starts auto-
matically and the braking effect of the
HOLD function is deactivated.
Automatic engine start The engine is started automatically if:
R you switch off the ECO start/stop function
by pressing the ECO button
R in transmission position Dor N, the brake
pedal is released and the HOLD function is not active
R you depress the accelerator pedal
R you engage reverse gear 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 starts to roll
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-conditioning system is
switched on
R the battery's charge status is too low
i Shifting the transmission to position
P
does not start the engine.
i If you shift the transmission from
Rto D,
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 All vehicles (except AMG vehicles)
X
To switch off: press ECO button :.
Indicator lamp ;and the ¤symbol in
the multifunction display go out.
X To switch on: press ECO button :.
Indicator lamp ;lights up. If all conditions
for automatic engine switch-off
(Y page 163) are met, the ¤symbol is lit
green in the multifunction display.
If not all conditions for automatic engine
switch-off (Y page 163) are met, the ¤
symbol is lit yellow in the multifunction dis- play. If this is the case, the ECO start/stop
function is not available.
i If indicator lamp
;is off, the ECO start/
stop function has been deactivated man-
ually or as the result of a malfunction. The
engine will then not be switched off auto-
matically when the vehicle stops. 164
DrivingDriving and pa
rking

AMG vehicles
X
To switch off: in drive program C, press
ECO button :.
or X Switch to drive program S,S+ orM
(Y page 172).
Indicator lamp ;and the ¤symbol in
the multifunction display go out.
The Stop/Start active Stop/Start active orStop/Start
Stop/Start
inactive
inactive message in the AMG menu in the
multifunction display goes out.
X To activate: press ECO button :.
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 page 163) are met, the ¤
symbol is lit green in the multifunction dis-
play. In addition, the Stop/Start active Stop/Start active
message is shown in the AMG menu in the multifunction display.
If the conditions for automatic engine
switch-off are not all fulfilled (Y page 163),
the ECO symbol ¤is shown in yellow. If
this is the case, the ECO start/stop func-
tion is not available. In addition, the Stop/ Stop/
Start inactive
Start inactive display message is
shown in the AMG menu in the multifunc-
tion display.
i If indicator lamp
;is off, the ECO start/
stop function has been deactivated man-
ually or as the result of a malfunction. The
engine will then not be switched off auto-
matically when the vehicle stops. Driving
165Driving and pa rking Z

Problems with the engine
Problem
Possible causes/consequences and
M
MSolutions The engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X Deactivate the HOLD function (Y page 200) or DISTRONIC
PLUS (Y page 198).
X Try to start the engine again. The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction 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 instrument cluster go
out.
X Try to start the engine again (Y page 161). Avoid excessively
long and frequent attempts to start the engine, as this will drain
the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop. The engine does not
start. The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge display shows 0. 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 355).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal 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 a qualified specialist workshop. 166
DrivingDriving and parking

Problem
Possible causes/consequences and
M
MSolutions Vehicles with a petrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the 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 a qualified specialist
workshop. The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be on 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 331). 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,
the vehicle could pull away suddenly. There is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate. G
WARNING
The automatic transmission switches to neu-
tral position Nwhen 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 position P. Prevent the parked vehi- cle from rolling away by applying the parking
brake. Automatic transmission
167Driving and parking Z