engine 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). Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognise function
restrictions relevant to safety. The operating
safety of your vehicle may be impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
You must observe the legal requirements for
the country in which you are currently driving when operating the on-board computer.
The on-board computer only shows messages
or warnings from certain systems in the mul- tifunction display. You should therefore make
sure your vehicle is operating safely at all times. Otherwise, a vehicle that is not oper-
ating safely may cause an accident.
For an overview, see the instrument cluster
illustration (Y
page 32). Displays and operation
Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade.
The coolant temperature gauge is in the
instrument cluster on the left-hand side
(Y page 32).
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 120 †.
At high outside temperatures and when driv-
ing uphill, the coolant temperature may rise
to the end of the scale. Rev counter
! Do not drive in the overrevving range.
Doing so will damage the engine.
The red band in the rev counter indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached. Outside temperature display
You should pay special attention to road con-
ditions when temperatures are around the
freezing point. 240
Displays and operationOn-board computer and displays

items in the multifunction display are not
shown during this time.
Deactivating/activating ESP ®i
Observe the "Important safety notes" sec-
tion in the description of ESP ®
(Y page 73). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilises the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel
Deactivating/activating ESP ®
on AMG vehi-
cles (Y page 74).
Further information about ESP ®
(Y page 72)
X Start the engine.
X Press the =or; button on the steer-
ing wheel to select the Assist.
Assist. menu.
X Press the 9or: button to select
ESP
ESP.
X Press the abutton.
The current selection is displayed.
X To activate/deactivate: press thea
button again.
ESP ®
is deactivated if the åwarning lamp
in the instrument cluster lights up continu-
ously when the engine is running.
If the ÷ warning lamp and the åwarn-
ing lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 291).
Observe the information on display messages (Y page 262). Activating/deactivating PRE-SAFE
®
Brake PRE‑SAFE
®
Brake is only available in vehicles
with DISTRONIC PLUS.
X Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press the 9or: button to select
PRE-SAFE Brake
PRE-SAFE Brake.
X Press the abutton.
The current selection is displayed.
X To activate/deactivate: press thea
button again.
When PRE-SAFE ®
Brake is deactivated, the
assistance graphic shows the æsymbol
in the multifunction display.
For more information on PRE‑SAFE ®
Brake,
see (Y page 76).
Activating/deactivating ATTENTION
ASSIST X
Press the =or; button on the steer-
ing wheel to select the Assist.
Assist. menu.
X Press the 9or: button to select
Attention Assist Attention Assist.
X Press the abutton.
The current selection is displayed.
X To activate/deactivate: press thea
button again.
When ATTENTION ASSIST is deactivated, the é symbol appears in the multifunction
display in the assistance graphic display.
For further information about ATTENTION
ASSIST, see (Y page 218).
Activating/deactivating Blind Spot
Assist X
Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press the 9or: button to select
Blind Spot Assist
Blind Spot Assist. 250
Menus and submenusOn-board computer and displays

In daylight, the displays in the instrument
cluster are not illuminated.
Switching the daytime driving lights
on/off
The Day lights Day lights function can only be
switched on with the engine turned off.
X Press the =or; button on the steer-
ing wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Light
Light submenu.
X Press ato confirm.
X Press the :or9 button to select the
Day lights
Day lights function.
If the Day lights
Day lights function has been
switched on, the cone of light and the W
symbol in the multifunction display are
shown in orange.
X Press the abutton to save the setting.
Further information on daytime driving lights
(Y page 123).
Switching the Intelligent Light System
on/off
X Press the =or; button on the steer-
ing wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Light
Light submenu.
X Press ato confirm.
X Press the :or9 button to select the
Intell. Light Sys. Intell. Light Sys. function.
If the Intell. Light Sys.
Intell. Light Sys. function has
been switched on, the cone of light and the L symbol in the multifunction display
are shown in orange.
X Press the abutton to save the setting.
When you activate Intell. Light Sys.
Intell. Light Sys.,
you activate the following functions:
R Motorway mode
R Active light function
R Cornering light function
R Extended range foglamps
If you set the dipped-beam headlamps for
driving on the right/left, the multifunction
display shows the Intell. Intell.Light
LightSystem:
System: System inoperative Inactive for
System inoperative Inactive for
left-side traffic left-side traffic
orIntell. Light
Intell. Light
System:
System: System
Systeminoperative
inoperative Inactive
Inactive
for right-side traffic
for right-side traffic display message
instead of the Intell.
Intell.Light
LightSys.
Sys.function
in the Light
Light submenu (Y page 253).
Further information on the Intelligent Light
System (Y page 127).
Setting the dipped-beam headlamps for
driving on the left/right
X Press the =or; button on the steer-
ing wheel to select the Settings
Settingsmenu.
X Press the :or9 button to select the
Light
Light submenu.
X Press ato confirm.
X Press the :or9 button to select the
Dipped beams Setting for:
Dipped beams Setting for: function.
You will see the selected setting: Right-
Right-
side traffic
side traffic orLeft-side traffic
Left-side traffic.
X Press the abutton to save the setting.
If you change the setting, conversion does
not take place until the next time the vehi-
cle is stationary.
This function is only available on vehicles with
the Intelligent Light System.
You can use this function to switch between
symmetrical and asymmetrical dipped beam
(Y page 122).
If you set the dipped-beam headlamps for
driving on the right/left, then motorway
mode and the extended range foglamps are
unavailable.
A qualified specialist workshop can set the
dipped-beam headlamps for driving on the
left/right.
Setting the brightness of the ambient
lighting
X Press the =or; button on the steer-
ing wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Lights Lights submenu.
X Press ato confirm. Menus and submenus
253On-board computer and displays Z

X
Press the :or9 button to select the
Amb. light +/-
Amb. light +/- function.
You will see the selected setting.
X Press ato confirm.
X Press the :or9 button to adjust the
brightness to any level from Off
OfftoLevel 5
Level 5
(bright).
X Press the aor% button to save the
setting.
Setting the ambient lighting colour X Press the =or; button on the steer-
ing wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Lights
Lights submenu.
X Press ato confirm.
X Press the :or9 button to select the
Amb. light col.
Amb. light col. function.
X Press ato confirm.
X Press the :or9 button to set the
colour to SOLAR
SOLAR, NEUTRAL
NEUTRAL orPOLAR
POLAR.
X Press the aor% button to save the
setting.
Activating/deactivating the surround
lighting and exterior lighting delayed
switch-off
X Press the =or; button on the steer-
ing wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Light
Light submenu.
X Press ato confirm.
X Press the :or9 button to select the
Surround lighting
Surround lighting function.
If the Surround
Surround lighting
lightingfunction is acti-
vated, the light cone and the area around
the vehicle are displayed in orange in the
multifunction display.
X Press the abutton to save the setting. Deactivating delayed switch-off of the exte-
rior lighting temporarily:
X Before leaving the vehicle, turn the key to
position 0in the ignition lock.
X Turn the key to position 2in the ignition
lock.
The exterior lighting delayed switch-off is
deactivated.
Delayed switch-off of the exterior lighting is
reactivated the next time you start the
engine.
If you have activated the Surround light‐
Surround light‐
ing ing function and the light switch is set to
Ã, the following functions are activated
when it is dark:
R surround lighting: the exterior lighting
remains lit for 40 seconds after unlocking
with the key. If you start the engine, the
surround lighting is switched off and auto-
matic headlamp mode is activated
(Y page 123).
R exterior lighting delayed switch-off: the
exterior lighting remains lit for 60 seconds
after the engine is switched off. If you close all the doors and the boot lid/tailgate, the
exterior lighting goes off after 5 seconds.
i Depending on your vehicle's equipment,
when the surround lighting and delayed
switch-off exterior lighting are on, the fol-
lowing light up:
R side lamps
R dipped-beam headlamps
R daytime driving lights
R surround lighting in the exterior mirrors
Activating/deactivating the interior light-
ing delayed switch-off
If you activate the Light. delay Switch Light. delay Switch
off
off function, the interior lighting remains on
for 20 seconds after you remove the key from the ignition lock. 254
Menus and submenusOn-board computer and displays

If you have switched on the
Auto. fold in
Auto. fold in
function and you fold the exterior mirrors in
using button :on the door, they will not fold
out automatically (Y page 117).
You can then only fold out the exterior mirrors
using button :.
Resetting to factory settings X
Press the =or; button on the steer-
ing wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Factory setting
Factory setting submenu.
X Press ato confirm.
The Reset all settings?
Reset all settings? message
appears.
X Press the :or9 button to select No
No
or Yes
Yes.
X Press the abutton to confirm the selec-
tion.
If you have selected Yes Yes, the multifunction
display shows a confirmation message.
For safety reasons, not all functions are reset: the Limit
Limit speed
speed(winter
(winter tyres)
tyres)function
in permanent SPEEDTRONIC can only be set
in the Vehicle
Vehicle submenu. If you want to reset
the Day lights
Day lights in theLight
Light submenu, you
must turn the key to position 1in the ignition
lock. AMG menu in AMG vehicles
AMG displays :
Digital speedometer
; Gear indicator
= Upshift indicator
? Engine oil temperature
A Coolant temperature
B Status indicator for ECO start/stop func-
tion (Y page 163)
X Press the =or; button on the steer-
ing wheel to select the AMG
AMGmenu.
Upshift indicator UP
UP= indicates that the
engine has reached the overrevving range
when in the manual drive program. Upshift
indicator UP UP= fades out other messages
until you have shifted up.
If the engine oil temperature is below 80 †,
the oil temperature is shown in blue. Avoid
using the full output of the engine during this time.
SETUP :
Drive program (C C/SS+SS+/M M)
; ESP ®
mode (ON ON/OFFOFF) or SPORT handling
mode (SPORT SPORT)
= Suspension setting ( COMFORT COMFORT/SPORTSPORT/
SPORT+
SPORT+) 258
Menus and submenusOn-board computer and displays

SETUP shows the drive program, the ESP
®
(Electronic Stability Program) mode and the
suspension setting.
X Press the =or; button on the steer-
ing wheel to select the AMG
AMGmenu.
X Press the 9button repeatedly until
SETUP is displayed.
or
X Briefly press the AMG button on the centre
console (Y page 205).
RACETIMER Displaying and starting the RACETIMER
:
Lap
; RACETIMER
The RACETIMER is only intended for use on a closed race circuit. Do not use the function on
public roads.
You can start the RACETIMER when the
engine is running or if the key is in position 2
in the ignition lock.
X Press the =or; button on the steer-
ing wheel to select the AMG
AMG menu.
X Press the 9button repeatedly until the
RACETIMER is shown.
X To start: press the abutton to start the
RACETIMER.
Displaying the intermediate time X
Press the =or; button to select
Interm. Time Interm. Time.
X Press ato confirm.
The intermediate time is displayed for five
seconds.
Starting a new lap :
RACETIMER
; Fastest lap time (best lap)
= Lap
X Press ato confirm New Lap New Lap.
i A maximum of 16 laps may be stored. The
16th lap can only be completed with Fin‐
Fin‐
ish Lap
ish Lap .
Stopping the RACETIMER X
Press the %button on the steering
wheel.
X Confirm Yes
Yeswith a.
The RACETIMER interrupts timing if you stop
the vehicle and turn the key to position 1in
the ignition lock. If you turn the key to position
2 or 3and then press ato confirm Start Start,
timing is continued.
Resetting the current lap
X Stop the RACETIMER.
X Press the =or; button to select
Reset Lap Reset Lap .
X Press ato reset the lap time to "0". Menus and submenus
259On-board computer and displays Z

Deleting all laps
If you switch off the engine, the RACETIMER is
reset to "0" after 30 seconds. All laps are
deleted.
You cannot delete individual stored laps. If
you have stopped 16 laps, the current lap
does not have to be reset.
X Reset the current lap.
X Press ato confirm Reset Reset.
Reset Race Timer?
Reset Race Timer? appears in the multi-
function display.
X Press the :button to select Yes
Yes and
press the abutton to confirm.
All laps are deleted.
Overall evaluation :
RACETIMER overall evaluation
; Total time driven
= Average speed
? Distance covered
A Maximum speed
This function is shown if you have stored at
least one lap and stopped the RACETIMER.
X Press the =or; button on the steer-
ing wheel to select the AMG
AMGmenu.
X Press the 9button repeatedly until the
overall evaluation is shown. Lap evaluation :
Lap
; Lap time
= Average lap speed
? Lap length
A Top speed during lap
This function is only available if you have
stored at least two laps and have stopped the
RACETIMER.
X Press the =or; button on the steer-
ing wheel to select the AMG
AMG menu.
X Press the 9button repeatedly until the
lap evaluation is shown.
Each lap is shown in a separate submenu.
The fastest lap is indicated by flashing sym- bol :.
X Press the 9or: button to select a
different lap evaluation. 260
Menus and sub
menusOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions PRE-SAFE
PRE-SAFE
inoperative See inoperative See
Owner's Manual Owner's Manual
Important functions of PRE-SAFE
®
have failed. All other occupant
safety systems, e.g. airbags, remain available.
X Visit a qualified specialist workshop immediately. PRE-SAFE
PRE-SAFE
Functions cur‐ Functions cur‐
rently rently
limited
limited See
See
Owner's Manual
Owner's Manual PRE-SAFE
®
Brake is temporarily inoperative.
Possible causes:
R the function is impaired due to heavy rain or snow
R the sensors in the radiator trim and in the bumpers are dirty
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation
R AMG vehicles: ESP ®
is deactivated
R the system is outside the operating temperature range
R the on-board voltage is too low.
Once the causes listed above no longer apply, the display message goes out.
PRE ‑SAFE ®
Brake is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle to prevent it from rolling away (Y page 180).
X Clean the sensors in the radiator grille and the bumper
(Y page 337).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 74). PRE-SAFE PRE-SAFE
Functions limited Functions limited
See Owner's Manual See Owner's Manual
PRE-SAFE
®
Brake is inoperative due to a fault. BAS PLUS or the
distance warning signal may also have failed.
X Visit a qualified specialist workshop. ü If this symbol appears in the multifunction display, a seat belt
tongue has been inserted into a rear seat belt buckle.
Further information on the status indicator for the rear seat belts
(Y page 47). Display
messages
265On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions Adaptive
Adaptive
Main-beam
Main-beam
Assist currently
Assist currently
unavailable See unavailable See
Owner's Manual Owner's Manual Adaptive Highbeam Assist is deactivated and temporarily inoper-
ative. Possible causes:
R the windscreen is dirty in the camera's field of vision
R visibility is impaired due to heavy rain, snow or fog
X Clean the windscreen.
If the system detects that the camera is fully operational again, the
Adaptive Main-beam Assist available again
Adaptive Main-beam Assist available again message is
displayed.
Adaptive Highbeam Assist is operational again. Adaptive Adaptive
Main-beam
Main-beam
Assist inoperative
Assist inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Engine
Display messages
Possible causes/consequences and
M MSolutions +
Top Top
up
upcoolant
coolant See
See
Owner's Manual
Owner's Manual The coolant level is too low.
! Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Top up the coolant, observing the warning notes before doing so
(Y page 331).
X If the coolant needs topping up more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop. ? The fan motor is faulty.
X If the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid putting the engine under heavy load as you do so, e.g.
driving in mountainous terrain and stop-start traffic. 270
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions ?
Coolant Stop vehi‐ Coolant Stop vehi‐
cle Switch engine cle Switch engine
off off The coolant is too hot.
A warning tone also sounds.
G WARNING
Never drive with an overheated engine. Driving when your engine is overheated can cause some fluids which may have leaked into
the engine compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the bonnet.
There is a risk of injury.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Secure the vehicle against rolling away (Y page 180).
X Wait until the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 120 †. The engine may
otherwise be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant level, the coolant temperature may rise to 120 †. #
See Owner's Manual See Owner's Manual The battery is not being charged.
A warning tone also sounds.
Possible causes:
R faulty alternator
R torn poly-V-belt
R a malfunction in the electronics
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
! Do not continue driving. The engine could otherwise overheat.
X Secure the vehicle to prevent it from rolling away (Y page 180).
X Consult a qualified specialist workshop. Display
messages
271On-board computer and displays Z