2014 MERCEDES-BENZ CLA headlamp

thesymbol in the multifunction
display are shown in orange.
XPress thebutton to save the setting.
Further information on daytime running
lamps (Ypage 105).
Switching Adaptive HighbeamAssist on/
off
This function is only available on vehicles with
the Intelligent Light System.
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbutton to select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Adaptive Highbeamfunction.
If theAdaptive Highbeamfunction has
been switched on, the cone of light and the
symbol in the multifunction display
are shown in orange.
XPress thebutton to save the setting.
For further information about Adaptive
Highbeam Assist, see (Ypage 108).
Setting the brightness of the ambient
lighting
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbutton to select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Amb. Light +/-function.
You will see the selected setting.
XPressto confirm.
XPress theorbutton to adjust the
brightness to any level fromDisabled
toLevel 5(bright).
XPress theorbutton to save the
setting.
Activating/deactivating surround
lighting and exterior lighting delayed
switch-off
If you have activated theSurround
Lightingfunction and the light switch is set
to, the following functions are activated
when it is dark:
Rsurround 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
automatic headlamp mode is activated
(Ypage 105).
Rexterior 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 trunklid,
the exterior lighting goes off after
15 seconds.
XPress theorbutton on the
steering wheel to selecttheSettings
menu.
XPress theorbutton to select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Surround Lightingfunction.
When theSurround Lightingfunction is
activated, the light cone and the area
around the vehicle are displayed in orange
in the multifunction display.
XPress thebutton to save the setting.
Deactivating delayed switch-off of the
exterior lighting temporarily:
XBefore leaving the vehicle, turn the
SmartKey to position0in the ignition lock.
XTurn the SmartKey to position2in 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.
Menus and submenus207
On-board computer and displays
Z

iDepending on your vehicle'sequipment,
when the surround lighting and delayed
switch-offexterior lighting are on, the
following light up:
RParking lamps
RFront fog lamps
RLow-beam headlamps
RDaytime running lamps
RSide marker lamps
RSurround lighting in the exterior mirrors
Activating/deactivating the interior
lighting delayedswitch-off
If you activate theInterior Lighting
Delayfunction, the interior lighting remains
on for 20 seconds after you remove the key
from the ignition lock.
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbuttonto select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Interior Lighting Delayfunction.
If theInteriorLightingDelayfunction
has been switched on, the vehicle interior
is displayed in orange in the multifunction
display.
XPress thebutton to save the setting.
Vehicle
Activating/deactivating the automatic
door locking mechanism
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbutton to select the
Vehiclesubmenu.
XPressto confirm.
XPress theorbutton to select the
Automatic Door Lockfunction.
When theAutomaticDoorLockfunction
is activated, the vehicle doors are displayed
in orange in the multifunction display.
XPress thebutton to save the setting.
If you activate theAutomatic Door Lock
function, the vehicle is centrally locked above
a speed of around 9 mph (15 km/h).
For further information on the automatic
locking feature, see (Ypage 79).
Activating/deactivating the acoustic
locking verification signal
If you switch on theAcousticLockfunction,
an acoustic signal sounds when you lock the
vehicle.
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbutton to select the
Vehiclesubmenu.
XPressto confirm.
XPress theorbutton to select the
Acoustic Lockfunction.
If theAcousticLockfunction is activated,
the\nsymbol in the multifunction
display lights up orange.
XPress thebutton to save the setting.
Activating/deactivating the radar sensor
system
XPress theorbutton on the
steering wheel to select theSettmenu.
XPress theorbutton to select the
Vehiclesubmenu.
XPressto confirm.
XPress theorbutton to select
Radar Sensor (See Oper. Manual).
You will see the selected setting:Onor
Off.
XPress thebutton to save the setting.
208Menus and submenus
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
XWait foraperiod of at least 60 seconds until the necessary
system checks have been completed.
XMake sure that the display messages do not appear in the
multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF indicator
lamp remains lit or goes out depends on how OCS classifies the
occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
XVisit a qualified specialist workshop immediately.
For further information about the Occupant Classification System,
see (Ypage 45).
Lights
iDisplay messages about LEDs:
This display message will only appear if all LEDs have failed.
Display messagesPossible causes/consequences and
Solutions

Check Left
Cornering Lightor
Check Right
Cornering Light
The left or right-hand cornering light is defective.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 111).
or
XVisit a qualified specialist workshop.

Check Left Low
BeamorCheck
Right Low Beam
The left or right-hand low-beam headlamp is defective.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 111).
or
XVisit a qualified specialist workshop.

Check Rear Left
Turn Signalor
Check Rear Right
Turn Signal
The rear left-hand or rear right-hand turn signal is defective.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 111).
or
XVisit a qualified specialist workshop.
Display messages223
On-board computer and displays
Z

Checking and adding other service
products
Checking coolantlevel
GWARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalded by hot
coolant spraying out.There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
!The coolant may only be checked and
corrected when the engine is cool (coolant
temperature below 104 ‡ (40 †).
Checking the coolant when the coolant
temperature is above 104 ‡ (40 †) may
result in damage to the engine or to the
engine cooling system.
Example
XPark the vehicle on a level surface.
Only check the coolant level when the
vehicle is on a level surface and the engine
has cooled down.
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XCheck the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
104 ‡ (40 †).
XTurn the SmartKey to position
0(Ypage 137) in the ignition lock.
XSlowly turn caphalf a turn counter-
clockwise to allow excess pressure to
escape.
XTurn capfurther counter-clockwise and
remove it.
If the coolant is at the level of marker bar
"in the filler neck when cold, there is
enough coolant in coolant expansion
tank.
XIf necessary, add coolant that has been
tested and approved by Mercedes-Benz.
XReplace capand turn it clockwise as far
as it will go.
For further information on coolant, see
(Ypage 349).
Adding washer fluid to the windshield
washer system/headlampcleaning
system
GWARNING
Windshield washer concentrate is highly
flammable. If it comes into contact with hot
engine components or the exhaust systemit
could ignite. There is a riskoffire and injury.
Make sure that no windshield washer
concentrate is spilled next to the filler neck.
Example
XTo open:pull capupwards by the tab.
XAdd the premixed washer fluid.
XTo close:press caponto the filler neck
until it engages.
Engine compartment283
Maintenance and care
Z

The washer fluid reservoir is used for both the
windshield washer system and the headlamp
cleaning system.
If the washer fluid level drops below the
recommended minimum of1liter, a message
appears in the multifunction display
prompting you to refill the washer fluid
(Ypage 239).
Further information on windshield washer
fluid/antifreeze (Ypage 350).
Maintenance
ASSYST PLUS
Service messages
The ASSYST PLUS service interval display
informs you of the nextservice due date.
Information on the type of service and service
intervals (see the separate Maintenance
Booklet).
You can obtain further information from an
authorized Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
iThe ASSYST PLUS serviceinterval display
does not show any informationonthe
engine oil level. Observe the notes on the
engine oil level (Ypage 281).
The multifunction display shows a service
message for several seconds, e.g.:
RService A in .. Days
RService A Due
RService A Exceeded by .. Days
Depending on the operating conditions of the
vehicle, the remaining time or distance until
the next service due date is displayed.
The letterAorB, possibly in connection with
a number or another letter, shows the type of
service.Astands for a minor service andBfor
a major service.
You can obtain further information from an
authorized Mercedes-BenzCenter.
The ASSYST PLUS service interval display
does not take into accountany periods of
time during which the battery is
disconnected.
Maintaining the time-dependent service
schedule:
XNote down the service due date displayed
in the multifunctiondisplay before
disconnecting the battery.
or
XAfter reconnecting the battery, subtract
the battery disconnection periods fromthe
service date shown on the display.
Hidingaservice message
XPressor.
Displaying service messages
XSwitch on the ignition.
XUsingor, selecttheServ.
menu.
XPressorto select theASSYST
PLUSsubmenu and pressto confirm.
The service due date appears in the
multifunction display.
Information about Service
Resetting the ASSYST PLUS service
interval display
!If the ASSYST PLUS service interval
display has been inadvertently reset, this
setting can be corrected at a qualified
specialist workshop.
Have service work carried out as described
in the Maintenance Booklet. This may
otherwise lead to increased wear and
damage to the major assemblies or the
vehicle.
Aqualified specialist workshop, e.g. an
authorized Mercedes-BenzCenter, will reset
the ASSYST PLUS service interval display
after the service work has been carried out.
You can also obtain further information on
maintenance work, for example.
284Maintenance
Maintenance and care