2014 MERCEDES-BENZ CLS fuel

Displaysandoperation
Instrument cluster
Speedometer withsegments (Ypage 220)
Multifunction display (Ypage 221)
$Tachometer (Ypage 219)
!Coolant temperature (Ypage 219)
Fuelgauge
Coolant temperaturedisplay
GWARNING
Opening thehoodwhen theengineis
overheated or when there isafireinthe
enginecompartmentcould expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there isafire in the
engine compartment, keep the hood closed
and contact the fire department.
!Adisplay message is shown if the coolant
temperature is too high.
If the coolanttemperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolanttemperature gauge is in the
instrument cluster on the left-hand side
(Ypage 31).
Under normal operatingconditions and with
the specified coolant level, the coolant
temperature may rise to 248‡(120 †).
Tachometer
!Do not drive in the overrevving range, as
this could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protectthe
engine when the red band is reached.
Displays and operation219
On-board computer and displays
Z

Text fieldshows the selected menu or
submenu as well as display messages.
The following messages may appear in the
multifunction display:
\nShift recommendation (Ypage 161)
 Active Parking Assist (Ypage 196)
Adaptive Highbeam Assist
(Ypage 122)
ECO start/stop function
(Ypage 150)
HOLD function (Ypage 186)
Menus and submenus
Menu overview
Press the\norbutton on the
steeringwheel to call up the menu bar and
selectamenu.
Operating the on-board computer
(Ypage 220).
Dependingonthe equipment installed in the
vehicle, you can call up the following menus:
RTripmenu (Ypage 222)
RNavimenu (navigation instructions)
(Ypage 224)
RAudiomenu (Ypage 225)
RTelmenu (telephone) (Ypage 226)
RDriveAssistmenu (assistance)
(Ypage 227)
RServ.menu (Ypage 229)
RSettingsmenu (settings) (Ypage 229)
RAMGmenu in AMG vehicles (Ypage 234)
Trip menu
Standard display
XPress and hold thebutton on the
steeringwheel until theTripmenu with
trip odometerand odometeris
shown.
Trip computer "From Start" or "From
Reset"
Example: trip computer "From Start"
Distance
Time
$Average speed
!Average fuel consumption
XPress the\norbutton on the
steeringwheel to select theTripmenu.
XPressorto selectFrom Start
orFrom Reset.
The values in theFrom Startsubmenu are
calculated from the start ofajourney whilst
the values in theFrom Resetsubmenu are
calculated from the last time the submenu
was reset (Ypage 223).
TheFrom Starttrip computer is
automatically reset when:
Rthe ignition has been switched off for more
than four hours.
R999 hours have been exceeded.
R9,999 miles have been exceeded.
222Menus and submenus
On-board computer and displays

TheFrom Resettrip computer is
automatically reset if the value exceeds
9,999 hours or 99,999miles.
ECO display
Example: ECO display
XPress the\norbutton on the
steeringwheel to select theTripmenu.
XSelectECO DISPLAYwithor.
If the ignition remains switched off for longer
than four hours, the ECO display will be
automatically reset.
Further information on the ECO display
(Ypage 170).
Displaying the range and current fuel
consumption
XPress the\norbutton on the
steeringwheel to select theTripmenu.
XPress theorbutton to select the
currentfuel consumption (not for AMG
vehicles) and the approximate range.
The approximate range that can be covered
depends on the fuel level and your current
driving style. If there is onlyasmall amount
of fuel left in the fuel tank,the display shows
avehicle being refueledinstead of the
range.
Digital speedometer
Shift recommendation (Ypage 161)
Digital speedometer
XPress the\norbutton on the
steeringwheel to select theTripmenu.
XPress theorbutton to select the
digital speedometer.
iIf the gearshift recommendation is shown
at the top of the multifunction display,itis
no longer shown at the bottom of the
multifunction display.
Resetting values
Example: resetting the trip computer "From Start"
XPress the\norbutton on the
steeringwheel to select theTripmenu.
XPress theorbutton to select the
function that you wish to reset.
XPress thebutton.
XPress thebutton to selectYesand
press thebutton to confirm.
You can reset the values of the following
functions:
RTrip odometer
R"From Start" trip computer
R"From Reset" trip computer
RECO display
Menus and submenus223
On-board computer and displays
Z

Display messagesPossible causes/consequences andSolutions
The battery is notbeing charged.
Awarning tone also sounds.
Possible causes are:
Radefective alternator
Ratornpoly-V-belt
Ramalfunctionintheelectronics
XPull overand stop the vehiclesafelyand switch off the engine,
paying attentiontoroadand traffic conditions.
XSecure the vehicleagainst rolling away (Ypage 167).
XOpenthe hood.
XCheck whether the poly-V-belt is torn.
If the poly-V-belt is torn:
!Do not continue driving. The engine could otherwise overheat.
XConsultaqualified specialist workshop.
If the poly-V-belt is not damaged:
XVisitaqualified specialist workshop.

Check Engine Oil
Level At Next
Refueling
The engine oil level has dropped to the minimum level.
Awarning tone also sounds.
XCheckthe oil level when next refueling, at the latest
(Ypage 307).
XIf necessary, add engine oil (Ypage 308).
XHave the engine checked ataqualified specialist workshop if
engine oil needs to be added more often than usual.
!Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com.
250Display messages
On-board computer and displays

Display messagesPossible causes/consequences andSolutions

Check Engine Oil
Level(Add1quart)
AMGvehicles: theengineoil level is toolow.
XCheckthe oil level when next refueling, at the latest
(Ypage 307).
XIf necessary, add engine oil (Ypage 308).
XHave the engine checked ataqualified specialist workshop if
engine oil needs to be added more often than usual.
!Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com.

Fuel Level Low
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
There is onlyavery small amount of fuel in the fuel tank.
XRefuel at the nearest gas station without fail.

Gas Cap Loose
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
XClose the fuel filler cap.
If the fuel filler cap is correctly closed:
XVisitaqualified specialist workshop.
Driving systems
Display messagesPossible causes/consequencesandSolutions


Attention Assist:
TakeaBreak!
Based on certain criteria, ATTENTION ASSIST has detected fatigue
oralack of concentrationonthe part of thedriver.Awarning tone
alsosounds.
XIf necessary,takeabreak.
During long journeys, take regular breaks in good time so you get
enoughrest.


AttentionAssist
Inoperative
ATTENTION ASSIST is inoperative.
XVisitaqualified specialist workshop.
Display messages251
On-boar dc omputer and displays
Z

Display messagesPossible causes/consequences andSolutions

Remove 'Start'
Button and Insert
Key
The KEYLESS-GO keycan continuouslynotbe detected.
KEYLESS-GO is temporarily malfunctioningorisdefective. A
warningtonealso sounds.
XInserttheSmartKey into theignition lockand turnittothe
desiredposition.
XVisitaqualified specialist workshop.

Close Doors to
LockVehicle
At leastone door is open.Awarning tone also sounds.
XClose all doorsand lockthe vehicle again.
Indicator and warning lamps in the
instrument cluster
Warning and indicator lamps
overview
Low-beam headlamps
(Ypage 118)
Parking lamps (Ypage 118)
High-beam headlamps
(Ypage 119)

Turn signal (Ypage 119)
Seat belts (Ypage 265)
(USA) Brakes (Ypage 266)

(Canada)Brakes (Ypage266)
ABS (Ypage267)
ESP®(Ypage269)
ESP®OFF (Ypage269)
SPORT handling mode in
AMG vehicles (Ypage270)
SRS (Ypage272)
\nCheck Engine (Ypage273)
Reserve fuel (Ypage273)
Coolant (Ypage273)
Distance warning signal
(Ypage275)
Tire pressure monitor
(Ypage276)
264Indicator and warninglamps in the instrument cluster
On-board computer and displays

Engine
ProblemPossible causes/consequences andSolutions
\n
The yellow Check
Enginewarning lamp
lightsupwhile the
engineisrunning.
Theremay beamalfunction, for example:
Rin theenginemanagement
Rin thefuel injection system
Rin theexhaust system
Rin theignition system
Rin thefuel system
The emission limit values may be exceeded and theenginemay
be runninginemergencymode.
XHavethevehicle checked as soon as possible ataqualified
specialist workshop.
iIn somestates, you must immediately visitaqualified
specialist workshopassoon as theyellow CheckEngine warning
lamp lights up.This is due to the legal requirements in effect in
these states. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving.

The yellow reserve fuel
warning lamp lights up
while the engine is
running.
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.

The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the\n
Check Enginewarning
lamp may light up.
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
XIf the fuel filler cap is not correctly closed:close the fuel filler
cap.
XIf the fuel filler cap is closed:visitaqualified specialist
workshop.

The red coolant
warning lamp lights up
while the engine is
running and the coolant
temperature gauge is
at the start of the scale.
The temperature sensor for the coolant temperature gauge is
defective.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
XSecure the vehicle against rolling away (Ypage 167).
XConsultaqualified specialist workshop.
Indicator and warning lampsinthe instrument cluster273
On-board computer and displays
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 notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Engine compartment
Hood
Important safetynotes
GWARNING
If the hood is unlatched, it may open up when
the vehicle is in motion and block your view.
There isarisk of an accident.
Never unlatchthe hood while driving.
GWARNING
When openingand closingthe hood, it may
suddenly fall intothe closed position.There is
arisk of injury to persons within range of
movement of the hood.
Open and close the hood only when no one is
within its range of movement.
GWARNING
Certain components in the engine
compartment, such as the engine, radiator
and parts of the exhaust system, can become
very hot. Working in the engine compartment
posesarisk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following.
GWARNING
Opening the hood when the engine is
overheated or when there isafire in the
engine compartmentcould expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there isafire in the
engine compartment, keep the hood closed
and contact the fire department.
GWARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There
isarisk of injury.
If you need to do any work inside the engine
compartment,
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rkeep clothingaway from moving parts
GWARNING
The ignition system and the fuel injection
system work under high voltage. If you touch
components which are under voltage, you
could get an electric shock. There isarisk of
injury.
Never touch components of the ignition
system or fuel injection system when the
ignition is switched on.
Opening the hood
GWARNING
When the hood is open and the windshield
wipers are set in motion,you can be injured
by the wiper linkage. There isarisk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
306Engine compartment
Maintenance and care