2014 MERCEDES-BENZ CLA fuel

If the coolant temperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolant temperature gauge is in the
instrument cluster on the right-hand side.
Under normal operating conditions 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 protect the
engine when the red band is reached.
Outside temperature display
You should pay special attention to road
conditions when temperatures are around
freezing point.
The outside temperature display is in the
multifunction display.
Changes in the outside temperature are
displayed after a short delay.
Speedometer with segments
The speedometer is divided into segments on
vehicles with DISTRONIC PLUS.
The segments in the speedometer indicate
which speed range is available.
RCruise control activated (Ypage 162):
The segments lightup from the stored
speed to the maximum speed.
RDISTRONIC PLUS activated (Ypage 164):
One or two segments in the set speed
range light up.
RDISTRONIC PLUS detectsavehicle in front:
The segments between the speed of the
vehicle in frontand the stored speed light
up.
Operating the on-board computer
Overview
Multifunctiondisplay
Switches on the Voice Control System;
see the separate operating instructions
"Right control panel
!Left control panel
Back button
XTo activatethe on-board computer:turn
the SmartKey to position1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel.
Displays and operation195
On-board computer and displays
Z

Permanentdisplay: outside temperature
or speed (Ypage 206)
Time
XTo show menu bar!:press the
orbutton on the steering wheel.
Menu bar!disappears after a few seconds.
Text field"shows the selected menu or
submenu as well as display messages.
iYou can set the time using the audio
system or COMAND; see the separate
operating instructions.
The following messages may appear in the
multifunction display:
 Active Parking Assist (Ypage 178)
CRUISECruise control (Ypage 162)
Adaptive Highbeam Assist
(Ypage 108)
HOLD function (Ypage 172)
Menus and submenus
Menu overview
Operating the on-board computer
(Ypage 195).
Depending on the equipmentinstalled in the
vehicle, you can call up the following menus:
RTripmenu (Ypage 197)
RNavimenu (navigation instructions)
(Ypage 199)
RAudiomenu (Ypage 200)
RTel(telephone) menu (Ypage 201)
RDriveAssist(Assistance) menu
(Ypage 202)
RServicemenu (Ypage 205)
RSettingsmenu (Ypage 205)
RAMGmenu in AMG vehicles (Ypage 209)
TheAudio,NaviandTelmenus differslightly
in vehicles with Audio 20 and in vehicles with
COMAND.The examples given in this
Operator's Manual apply to vehicles
equipped with COMAND.
Trip menu
Standard display
XPress and hold thebutton on the
steering wheel 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 theorbutton on the
steering wheel to select theTripmenu.
XPress theorbutton to select
From StartorFrom Reset.
The values in theFrom Startsubmenu are
calculated from the start of a journey, while
the values in theFrom Resetsubmenu are
calculated from the last time the submenu
was reset (Ypage 198).
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.
Menus and submenus197
On-board computer and displays
Z

TheFrom Resettrip computer is
automatically reset if the value exceeds
9,999 hours or 99,999 miles.
ECO display
Example: ECO display
XPress theorbutton on the
steering wheel to select theTripmenu.
XPressorto selectECO
DISPLAY.
If the ignition remains switched off for longer
than four hours, the ECO display will be
automatically reset.
For further information on the ECO display,
see (Ypage 157).
Displaying the range and current fuel
consumption
XPress theorbutton on the
steering wheel to select theTripmenu.
XPress theorbutton to select
current fuel consumption(not for AMG
vehicles) and approximate range.
Approximate rangeis calculated
according to the currentdriving style and the
amount of fuel in the tank. If there is only a
small amount of fuel left in the fuel tank, the
display shows a vehicle being refueled\n
instead of range.
Digital speedometer
Shift recommendation (Ypage 148)
Digital speedometer
Gearshift recommendationis not given on
AMG vehicles.
XPress theorbutton on the
steering wheel to select theTripmenu.
XPress theorbutton to select the
digital speedometer.
Resetting values
Example: resetting the trip computer "From Start"
You can reset the values of the following
functions:
RTrip odometer
R"From Start" trip computer
R"From Reset" trip computer
RECO display
XPress theorbutton on the
steering wheel to select theTripmenu.
XPress theorbutton to select the
function that you wish to reset.
XPress thebutton.
XPress thebutton to selectYesand
pressto confirm.
iWhen you reset the values in the "ECO
display", the values in the trip computer
"From Start" are likewise reset. When you
198Menus and submenus
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
The battery is notbeing charged.
Awarning tone also sounds.
Possible causes are:
Ra defective alternator
Ra torn poly-V-belt
Ra malfunction in the electronics
XPull overand stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
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.
XConsult a qualified specialist workshop.
If the poly-V-belt is not damaged:
XVisit a qualified specialist workshop immediately.

Check Engine Oil
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 281).
XIf necessary, add engine oil (Ypage 282).
XHave the engine checked at a qualified 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 (USA only).


Fuel Level Low
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
228Display messages
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
There is only a very small amount of fuel in thefuel tank.
XRefuel at the nearestgas stationwithout 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:
XVisit a qualified specialist workshop.
Driving systems
DisplaymessagesPossible causes/consequences and
Solutions

Attention Assist
Drowsiness
Detected
Based on certain criteria, ATTENTION ASSIST has detected fatigue
oralack of concentration on thepart of thedriver. A warning tone
also sounds.
XIf necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest.

Attention Assist
Inoperative
ATTENTION ASSIST is inoperative.
XVisitaqualified specialist workshop.
Speed Limit Assist
Currently
Unavailable See
Operator's Manual
Speed Limit Assist is deactivated and temporarily inoperative.
Possible causes are:
Rthe windshield in the camera's field of vision is dirty.
Rvisibility is impaired due to heavy rain, snow or fog.
XClean the windshield.
If the system detects that the camera is fully operational, the
display message disappears.
Speed Limit Assist is operational again.
SpeedLimitAssist:
Unavailable In
This Country
Speed Limit Assist is only available in certain countries.
XDrive on.
Speed Limit Assist is available again as soon as you drive into a
country in which its use is approved.
Display messages229
On-board computer and displays
Z

Engine
ProblemPossible causes/consequences and
Solutions

The yellow Check
Engine warning lamp
lights up while the
engine is running.
There may be a malfunction, for example:
Rin the engine management
Rin the fuel injection system
Rin the exhaust system
Rin the ignition system
Rin the fuel system
The emission limit values may be exceeded and the enginemay
be running in emergency mode.
XHave the vehicle checked as soon as possible at a qualified
specialist workshop.
iIn some states, you must immediately visit a qualified
specialist workshop as soon as the yellow CheckEngine warning
lamp lights up.This depends on the locally applicable legal
requirements. 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 engine is
running.
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:visit a qualified specialist
workshop.
\r
The red coolant
warning lamp lights up
while the engine is
running and the coolant
temperature gage is at
the start of the scale.
The temperature sensor for the coolant temperature gage 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 153).
XConsult a qualified specialist workshop.
248Warning and indicator lamps in the instrument cluster
On-board computer and displays

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 note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
iRead the information on qualified
specialist workshops: (Ypage 25).
Engine compartment
Hood
Important safety notes
GWARNING
If the hood is unlatched, it may open up when
the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving.
GWARNING
When opening and closing the hood, it may
suddenly fall into the closed position.There is
a risk 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
poses a risk 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 is a fire 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 is a fire 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
is a risk 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 clothing away 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 is a risk 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 is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
280Engine compartment
Maintenance and care

Cleaning the wheels
!Do notuse acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
!Do not park the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after
cleaning. Braking heats the brake discs and
the brake pads/linings, thus drying them.
The vehicle can then be parked.
Cleaning the paintwork
!Do not affix:
Rstickers
Rfilms
Rmagnetic plates or similaritems
to painted surfaces.You could otherwise
damage the paintwork.
XRemove dirt immediately, where possible,
while avoiding rubbing too hard.
XSoak insect remains with insect remover
and rinse off the treated areas afterwards.
XSoak bird droppings with water and rinse
off the treated areas afterwards.
XRemove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with a cloth soaked in petroleum ether or
lighter fluid.
XUse tar remover to remove tar stains.
XUse silicone remover to remove wax.
XUse a suitable touch-up stick, e.g. MB
Touch-Up Stick, to repair slight damage to
the paintwork quickly and provisionally.
The following cannot always be completely
repaired:
Rscratches
Rcorrosive deposits
Rareas affected by corrosion
Rdamage caused by inadequate care
In such cases, visit a qualified specialist
workshop.
If water no longer forms "beads" on the paint
surface, use the paint care products
recommended and approved by Mercedes-
Benz.This is the case approximately every
three to five months, depending on the
climate conditions and the care product used.
If the dirt has penetrated the paint surface or
if the paintwork has become dull, then the
paintwork should be cleaned. For cleaning,
please use the paint cleaner recommend and
approved by Mercedes Benz.
Do not use these care products in the sun or
on the hood while the hood is hot.
Matte finish care
!Never polish the vehicle or the light alloy
wheels. Polishing causes the finish to
shine.
!The following may cause the paint to
become shiny and thus reduce the matte
effect:
RVigorous rubbing with unsuitable
materials.
RFrequent use of car washes.
RWashing the vehicle in direct sunlight.
!Never use paint cleaner, buffing or
polishing products, or gloss preserver, e.g.
wax. These products are only suitable for
high-gloss surfaces. Their use on vehicles
with matte finish leads to considerable
surface damage (shiny, spotted areas).
Always have paintwork repairs carried out
at a qualified specialist workshop.
!Do not use wash programs with a hot wax
treatment under any circumstances.
Observe these notes if your vehicle has a
clear matte finish. This will help you to avoid
damage to the paintwork due to incorrect
treatment.
Care287
Maintenance and care
Z