2013 MERCEDES-BENZ CLA air filter

1, 2, 3 ...
12 V socket see Socket
A
ABS (Anti-lock Braking System) Display message ............................ 227
Function/notes ................................ 64
Important safety notes ....................64
Warning lamp ................................. 256
Activating/deactivating air-recir-
culation mode .................................... 134
Activating/deactivating cooling
with air dehumidification ................. 128
Active light function ......................... 110
Active Park Assist Display message ............................ 245
Active Parking Assist
Cancelling ...................................... 190
Detecting parking spaces ..............187
Exiting a parking space ..................189
Function/notes ............................. 186
Important safety notes ..................186
Parking .......................................... 188
Towing a trailer .............................. 191
ADAPTIVE BRAKE ................................. 70
Adaptive Brake Assist Display message ............................ 234
Function/notes ................................ 66
Adaptive brake lamps ......................... 68
Adaptive Highbeam Assist Display message ............................ 240
Function/notes ............................. 111
Switching on/off ........................... 112
Adaptive Main-beam Assist
Switching on/off (on-board com-
puter) ............................................. 221
Additional speedometer ................... 220
Additives (engine oil) ........................ 341
Adjusting the headlamp range ......... 108
Airbags Front airbag (driver, front
passenger) ....................................... 44
Important safety guidelines .............42
Kneebag ........................................... 44
Sidebag ............................................ 44
Triggering ......................................... 41
Windowbag ...................................... 45
Air-conditioning system
see Climate control
Air filter (white display message) .... 242
Air pressure see Tyre pressure
Air vents
Important safety notes ..................141
Rear ............................................... 142
Setting ........................................... 141
Setting the centre air vents ...........141
Setting the side air vents ...............142
Alarm system
see ATA (Anti-Theft Alarm system)
Ambient lighting
Setting the brightness (on-board
computer) ...................................... 222
Anti-glare film .................................... 280
Anti-lock braking system see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Aquaplaning ....................................... 167
Ashtray ............................................... 276
Assistance display (on-board com-
puter) .................................................. 217
Assistance menu (on-board com-
puter) .................................................. 217
ASSYST PLUS Displaying a service message ........287
Hiding a service message ..............287
Notes ............................................. 286
Resetting the service interval dis-
play ................................................ 287
Service message ............................ 286
Special service requirements ......... 287
ATA (Anti-Theft Alarm system)
Activating/deactivating ...................71
Function ........................................... 71
Interior motion sensor .....................72
Switching off the alarm ....................71
Tow-away protection ........................ 71
ATTENTION ASSIST
Activating/deactivating .................218
Display message ............................ 242
Function/notes ............................. 1954Index

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 24).
Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R switch on air-recirculation mode only
briefly
R switch on the cooling with air dehumidifi-
cation function
R switch on the defrost windscreen function
briefly, if required
THERMATIC automatic climate control/
THERMOTRONIC automatic climate control
regulates the temperature and the humidity
of the vehicle interior and filters out undesir-
able substances from the air.
THERMATIC automatic climate control/
THERMOTRONIC automatic climate control is
only operational when the engine is running.
Optimum operation is only achieved with the
side windows and panorama sliding sunroof
closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off ( Y page 135).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 88). This
will speed up the cooling process and the
desired vehicle interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. With THERMOTRONIC auto-
matic climate control, gaseous pollutants
and odours will also be reduced. A clogged
filter reduces the amount of air supplied to
the vehicle interior. For this reason, you
should always observe the interval for
replacing the filter, which is specified in the
Service Booklet. As it depends on environ-
mental conditions, e.g. heavy air pollution,
the interval may be shorter than stated in
the Service Booklet.
i It is possible that the residual heat func-
tion may be activated automatically an hour
after the key has been removed in order to
dry the air-conditioning system. The vehicle
is then ventilated for 30 minutes.124Overview of climate control systemsClimate control

on the ignition if you accidentally refuel
with the wrong fuel. Otherwise, the fuel will
enter the fuel system. Even small amounts
of the wrong fuel could result in damage to
the fuel system and the engine. The repair
costs are high. Notify a qualified specialist
workshop and have the fuel tank and fuel
lines drained completely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use a filter when adding fuel from a fuel
can. The fuel lines and/or the diesel injec-
tion system could otherwise be blocked by
particles from the fuel can.
Do not get into the vehicle again during the
refuelling process. Otherwise, electrostatic
charge could build up again.
If you overfill the fuel tank, some fuel may
spray out when you remove the fuel pump
nozzle.
For further information on fuel and fuel quality
( Y page 337).
Refuelling
Opening/closing the fuel filler flap
:To open the fuel filler flap;Tyre pressure table=To insert the fuel filler cap?Fuel type to be refuelledThe fuel filler flap is unlocked or locked auto-
matically when you open or close the vehicle
with the key.
The position of the fuel filler cap is displayed
æ in the instrument cluster. The arrow
next to the filling pump indicates the side of
the vehicle.
OpeningXSwitch off the engine.XRemove the key from the ignition lock.XPress the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.XTurn the fuel filler flap anti-clockwise and
remove it.XInsert the fuel filler cap into holder on the
inside of fuel filler flap =.XCompletely insert the filler neck of the fuel
pump nozzle into the tank, hook in place
and refuel.XOnly fill the tank until the pump nozzle
switches off.
i Do not add any more fuel after the pump
stops filling for the first time. Otherwise,
fuel may leak out.
Closing
XReplace the cap on the filler neck and turn
clockwise until it engages audibly.XClose the fuel filler flap.
i Close the fuel filler flap before locking the
vehicle.
160RefuellingDriving and parking

Apply the brakes yourself in these situations
and try to take evasive action.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations. To prevent dam-
age to the vehicle, deactivate DISTRONIC
PLUS and the HOLD function in the follow-
ing or other similar situations:
R when towing the vehicle
R in the car wash
If you fail to adapt your driving style, DIS-
TRONIC PLUS can neither reduce the risk of
an accident nor override the laws of physics.
DISTRONIC PLUS cannot take road and
weather conditions or traffic conditions into
account. DISTRONIC PLUS is only an aid. You
are responsible for the distance to the vehicle
in front, for vehicle speed, for braking in good
time, and for staying in the lane.
Do not use DISTRONIC PLUS:
R in road and traffic conditions which do not
allow you to maintain a constant speed
(e.g. in heavy traffic or on winding roads)
R on smooth or slippery roads. Braking or
accelerating can cause the drive wheels to
lose traction and the vehicle could then
skid
R when there is poor visibility, e.g. due to fog,
heavy rain or snow.
DISTRONIC PLUS may not detect narrow
vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can
be impaired in the case of:
R dirt on the sensors or the sensors are
obscured
R snow or heavy rain
R interference by other radar sources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
If DISTRONIC PLUS no longer detects a vehi-
cle in front, it may unexpectedly accelerate to
the speed stored.This speed can:
R be too high for a filter lane or a slip road
R be so high in the right lane that you pass
vehicles driving on the left
R be so high in the left lane that you pass
vehicles driving on the right
If there is a change of drivers, advise the new
driver of the speed stored
Cruise control lever
With the cruise control lever, you can operate
DISTRONIC PLUS and variable SPEED-
TRONIC.
The LIM indicator lamp on the cruise control
lever indicates which system you have selec-
ted:
R LIM indicator lamp off: DISTRONIC PLUS
is selected.
R LIM indicator lamp on: variable SPEED-
TRONIC is selected.
:To store the current speed or a higher
speed;To set the specified minimum distance=LIM indicator lamp?To store the current speed and calling up
the last stored speedATo store the current speed or a lower
speedBTo switch between DISTRONIC PLUS and
variable SPEEDTRONICCTo deactivate DISTRONIC PLUS174Driving systemsDriving and parking

Display messagesPossible causes/consequences and M Solutions4
Check eng. oil
lev. when next
refuellingThe engine oil level has dropped to the minimum level.
A warning tone also sounds.XCheck the oil level when next refuelling, at the latest
( Y page 284).XIf necessary, top up the engine oil ( Y page 285).XHave the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual.æ
Reserve fuel levelThe fuel level has dropped into the reserve range.
The auxiliary heating cannot be operated.XRefuel at the nearest filling station.çThere is very little fuel in the fuel tank.
The auxiliary heating cannot be operated.XRefuel at the nearest filling station without fail.¸
Replace air
cleaner elementVehicles with a diesel engine: the engine air filter is dirty and must
be replaced.XVisit a qualified specialist workshop.!
Clean fuel filterVehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.XVisit a qualified specialist workshop.
Driving systems
Display messagesPossible causes/consequences and M SolutionsÀ
Attention Assist
Drowsiness detec‐
tedBased on certain criteria, ATTENTION ASSIST has detected fatigue
or a lack of concentration on the part of the driver. A warning tone
also sounds.XIf necessary, take a break.
During long journeys, take regular breaks in good time so that you
get enough rest.
À
Attention Assist
inoperativeATTENTION ASSIST is inoperative.XVisit a qualified specialist workshop.242Display messagesOn-board computer and displays

Information on the type of service and service
intervals (see separate Service Booklet).
You can obtain further information from any
Mercedes-Benz Service Centre.
i The ASSYST PLUS service interval display
does not show any information on the
engine oil level. Observe the notes on the
engine oil level ( Y page 284).
The multifunction display shows a service
message for a few seconds, e.g.:
R Service A in .. days
R Service A due
R Service A overdue by .. days
Depending on the operating conditions of the
vehicle, the remaining time or distance until
the next service due date is displayed.
The letter indicates which service is due. A
stands for a minor service and B for a major
service. A number or another letter may be
displayed after the letter. This figure indicates
any necessary additional maintenance work
to be performed.
If you notify a qualified specialist workshop of
this display, you will receive a statement on
the associated costs.
The ASSYST PLUS service interval display
does not take into account any periods of
time during which the battery is disconnec-
ted.
Maintaining the time-dependent service
schedule:XNote down the service due date displayed
in the multifunction display before discon-
necting the battery.
or
XAfter reconnecting the battery, subtract
the battery disconnection periods from the
service date shown on the display.
Hiding a service message
XPress % or a .Displaying service messagesXSwitch the ignition on.XUsing = or ; , select the Service
menu.XPress 9 or : to select the ASSYST
PLUS submenu and press a to confirm.
The service due date appears in the multi-
function display.
Information about Service
Resetting the ASSYST PLUS service inter-
val display
! If the ASSYST PLUS service interval dis-
play has been inadvertently reset, this set-
ting can be corrected at a qualified special-
ist workshop.
Have service work carried out as described
in the Service Booklet. This may otherwise
lead to increased wear and damage to the
major assemblies or the vehicle.
A qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre, will reset the
ASSYST PLUS service interval display after
the service work has been carried out. You
can also obtain further information on main-
tenance work, for example.
Special service requirements
The prescribed service interval is based on
normal operation of the vehicle. Service work
will need to be performed more often if the
vehicle is operated under arduous conditions
or increased loads, for example:
R regular city driving with frequent intermedi-
ate stops
R if the vehicle is primarily used to travel
short distances
R for frequent operation in mountainous ter-
rain or on poor road surfaces
R if the engine is often left idling for long peri-
ods
In these or similar operating conditions, have
the air filter, engine oil and oil filter, for exam-
ple, changed more frequently. The tyres must
Service287Maintenance and careZ