2018 MERCEDES-BENZ CLA COUPE Owner's Manual

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
÷åNThe yellow ESP®and ESP®OFF warning lamp sare lit while the engine is running.
ESP®,B AS, Active Brake Assist, the HOLD function and hills tart assist are not
available due to amalfunction.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the functions listed
above.
The braking distance in an emergency braking situation can thus increase.
If ESP
®is not operational ,ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additiona ldisplay messages in the multifunction display.
XDrive on carefully.
XVisitaq ualified specialist workshopi mmediately.
÷åNThe yellow ESP®and ESP®OFF warning lamp sare lit while the engine is running.
ESP®,B AS, the HOLD function and hills tart assist are temporarily unavailable.
Active Brake Assist may have als ofailed.
ATTENTION ASSIST is deactivated.
Self-diagnosi sisnot yet complete.
GWARNING
The brake system continues to function normally, but without the functions listed
above.
The braking distance in an emergency braking situation can thus increase.
If ESP
®is not operational ,ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XCarefully drive asuitable distance, making slight steering movements at aspeed
above 12 mph (20 km/h).
The functions mentioned above are available again when the warning lamp goes
out.
If the warning lamp is still on:
XObserve the additiona ldisplay messages in the multifunction display.
XDrive on carefully.
XVisitaq ualified specialist workshopi mmediately.
Warning and indicator lamps in the instrument cluster223
On-board computer and displays
Z

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
!FNF (USA only), !(Canada only): the red indicator lamp for the electric
parking brake flashes or lights up and/or the yellow warning lamp for the electric
parking brake lights up.
XObserve the additiona ldisplay messages in the multifunction display.
6N The red restraint system warning lamp is lit while the engine is running.
The restraint system is malfunctioning.
GWARNING
The air bagsorE mergency Tensioning Devices may either be triggeredu ninten-
tionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
XObserve the additionald isplay messages in the multifunction display.
XDrive on carefully.
XContactaqualified specialist workshopa nd have the restraint system checked.
For further information about the restraint system, see (
Ypage4 0).
Engine
Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
;NThe yellow Check Engine warning lamp lights up while the engine is running.
There may be amalfunction, for example:
Rin the engine management
Rin the fuel injection system
Rin the exhaust system
Rin the ignitio nsystem
Rin the fuel system
The emission limitv alues may be exceededa nd the engine may be in emergency
mode.
XVisitaq ualified specialist workshopi mmediately.
iIn some states, you must immediatel yvisit aqualified specialist workshopa s
soon as the yellow Check Engine warning lamp lights up. This is due to the legal
requirements in effect in these states. If in doubt, check whethers uch legal
regulations apply in the state in which you are currently driving.
æN The yellow reserve fuel warning lamp lights up while the engine is running.
The fuel levelh as dropped into the reserve range.
XRefuel at the neares tgas station.
224Warning and indicator lamps in the instrument cluster
On-board computer and displays

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
æNThe yellow reserve fuel warning lamp flashes while the vehicleisinm otion.
In addition, the ;Check Engine warning lamp may light up.
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.
?NThe 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 gauge is malfunctioning.
The coolant temperature is no longer being monitored.T here isarisk of engine
damage if the coolant temperature is too high.
XPul lover and stop the vehicles afelyand switch off the engine, paying attention
to road and traffic conditions. Do not continue driving under any circumstances.
XSecure the vehiclea gainst rolling away(Ypage141).
XConsult aqualified specialist workshop.
Warning and indicator lamps in the instrument cluster225
On-board computer and displays
Z

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
?NThe red coolant warning lamp comes on while the engine is running.
The coolant levelist oo low.
If the coolant levelisc orrect, the airflow to the engine radiator may be blocked or
the electric engine radiator fan may be defective.
The coolant is too hot and the engine is no longer being cooleds ufficiently.
XObserve the additionaldisplay messages in the multifunction display.
XPullover and stop the vehicles afelyand switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehiclea gainst rolling away(Ypage141).
XLeave the vehiclea nd keepasafe distance from the vehicleu ntil the engine has
cooledd own.
XCheck the coolant levela nd add coolant, observing the warning notes
(Ypage2 60).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked,e .g. by snow,
slush or ice.
XDo not start the engine again until the coolant temperature is below 248 ‡
(120 †). Otherwise, the engine coul dbedamaged.
XDrive to the neares tqualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
?NThe red coolant warning lamp comes on while the engine is running. Awarning
tone als osounds.
The coolant temperature has exceeded2 48‡(120 †). The airflow to the engine
radiator may be blocked or the coolant levelm ay be too low.
GWARNING
The engine is not being cooleds ufficiently and may be damaged.
Do not drive whe nyoure ngine is overheated. This can cause some fluids which
may have leaked into the engine compartment to catch fire.
Steam from the overheated engine can also cause serious burns which can occur
just by opening the hood.
There is arisk of injury.
XObserve the additiona ldisplaym essages in the multifunction display.
XPullover and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehicle against rolling away (Ypag e141).
XLeav ethe vehicle and keep asafe distance from the vehicle until the engine has
cooledd own.
XCheck the coolant levela nd add coolant, observing the warning notes
(Ypag e260).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the ai rsupply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
226Warning and indicator lamps in the instrument cluster
On-board computer and displays

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
XAt coolant temperatures below 248 ‡(120 †), drive to the neares tqualified
specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
Driving systems
Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
·NThe red distance warning lamp lights up while the vehicleisinm otion.Awarning
tone als osounds.
You are approaching avehicleoras tationary obstacl einyourline of travel at too
high aspeed.
XBe prepared to brake immediately.
XPay carefu lattention to the traffic situation. You may have to brake or take
evasive action.
Further information on the distance warning function of Active Brake Assist
(
Ypage6 2).
Warning and indicator lamps in the instrument cluster227
On-board computer and displays
Z

Tires
Warning/
indicator
lampNSignal type
Possible causes/consequence sand M
Solutions
hNThe yellow tire pressure monitor warning lamp (pressure loss/malfunction) is lit.
The tire pressure monitor hasd etecte dalossofp ressure in at leas tone of the tires.
GWARNING
Tire pressures thata retoo lo wposet he following hazards:
Rtheym ayburst, especially as the load and vehicl espeed increase
Rtheym aywear excessivel yand/or unevenly, which mayg reatlyimpai rtire trac-
tion.
Rthe drivin gcharacteristics, as well as steerin gand braking ,maybe greatly
impaired
There is ariskofana ccident.
XStop the vehicl ewithou tmaking any sudden steerin gorbraking maneuvers. Pay
attentio ntothe trafficc onditions as yo udoso.
XSecure the vehicl eagain st rolling away (Ypage 141).
XObserve the additional displa ymessage sinthe multifunctio ndisplay .
XCheck the tire sand,ifn ecessary,f ollowthe instructions for aflatt ire
(Ypage 271).
XCheck the tire pressure (Ypage 294).
XIf necessary,c orrect the tire pressure.
hNThe yellow tire pressure monitor warning lamp (pressure loss/malfunction)
flashe sfor approximately one minute and thenr emains lit.
The tire pressure monitor is faulty.
GWARNING
The system is possibl yunabl etor ecognize or register lo wtire pressure.
There is ariskofana ccident.
XObserve the additional displa ymessage sinthe multifunctio ndisplay .
XVisitaq ualified specialis tworkshop immediately.
228Warning and indicator lamps in the instrument cluster
On-board computer and displays

General notes
The multimedia system section in this Opera-
tor's Manualdescribes the basicp rinciples for
operation. More information can be found in the Digital Operator's Manual.
Important safety notes
GWARNING
If you operate information systems and com-
municatio nequipment integrated in the vehi-
cle when driving, you may be distracted from
the traffic situation. You could also lose con-
trol of the vehicle.T here isarisk of an acci-
dent.
Only operate this equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legalr equirements for the
country in which you are currently driving when
operating the multimedia system.
The multimedia system calculates the route to
the destination withoutt aking the following into
account, for example:
Rtraffic lights
Rstop and yield signs
Rparking or stopping restrictions
Rroad narrowing
Rother road and traffic rule sand regulations
The multimedia system may give incorrect nav-
igation recommendations if the actual street/
traffic situation does not correspond with the
digital map's data.
For example:
Rad iverted route
Rthe road layout or the direction of aone-way
street has been changed
For this reason, you must alwayso bserve road
and traffic rule sand regulations during your
journey. Roa dand traffic rule sand regulations
alwaysh ave priority over multimedia system
driving recommendations. Navigation announcements are intended to
direct you whiled
riving withoutdiverting your
attention from the road and driving.
Please alwaysu se this feature instead of con-
sulting the map display for directions. Looking
at the icons or map display can distract you from
traffic conditions and driving, and increase the
risk of an accident.
This equipment complies with FCC radiation
exposure limits set forth for uncontrolled equip-
ment and meets the FCC radiof requency (RF)
Exposure Guidelines in Supplement CtoOET65.
This equipment has very low levelsofRFe nergy
that is deemedtoc omply withoutmaximum
permissive exposure evaluation (MPE). How-
ever, it is recommended to insta

ll it atadistance
of at least 8inches (approx. 20 cm) betweent he
radiation source and aperson's body (not
including limbss uch as hands, wrists, feet and
legs).
GWARNING
Modifications to electronic components, their software as wellasw iring can impair their
function and/or the function of other net-
worked components. In particular, systems
relevant to safety could also be affected. As a
result, these may no longer function as inten-
ded and/or jeopardize the operating safety of
the vehicle.T here is an increasedr isk of an
accident and injury.
Never tamper with the wiring as wellase lec-
tronic components or their software .You
shoul dhave all work to electricala nd elec-
tronic equipment carried out at aqualified
specialist workshop.
Function restrictions
For safety reasons, some functions are restric-
ted or unavailable whilet he vehicle is in motion.
You willn otice this, for example, because either
you willn ot be abletos elect certain menu items
or am essag ewillappear to this effect.
Function restrictions229
Multimedia system
Z

Operating system
Overview
General notes
!Do not use the space in frontoft he display
for storage. Objects placed here could dam-
age the display or impair its function .Avoid
any direct contact with the display surface.
Pressure on the display surface may result in
impairment stothe display, which could be
irreversible.
Wearing polarized sunglasses may impair your
ability to read the display.
The display has an automatic temperature-con-
trolled switch-off feature. The brightness is
automatically reduced if the temperature is too
high. The display may temporarily switch off
completely.
Cleaning instructions
!Do not touch the display. The display has a
very sensitive high-gloss surface; there is a
risk of scratching .Ifyou have to clean the
screen,h owever, use amild cleanin gagent
and asoft,l int-free cloth.
The display must be switched off and have
cooled down before you start cleaning. Do not
apply pressure to the display surface when
cleanin git, as this could cause irreversible dam-
age to the display.
Switching the multimedia system
on/off
XPress the qcontrol knob.
Adjusting the volume
XTurn the qcontrol knob.
The volume is adjusted:
Rfor the currently selected media source
Rduring traffic or navigation announcements
Rin hands-free mode during an active call
Switching the sound on or off
XPress the 8button on the control panel.
If the audio output is switched off, the status
line will show the 8symbol. If you switch the media source or set the volume, the sound
is automatically switched on.
iNavigation announcements will be heard
even if the sound is muted.
Functions
The multimedia system has the following func-
tions:
RRadio mode
RMedia mode with media search
RSound systems
RNavigation system
COMAND :navigation via the hard drive
Audio 20: navigation via SD card
RCommunication functions
RSIRIUS Weather (COMAND)
RVehicle function swith system settings
RFavorites functions
Controller
The controller in the center console lets you:
Rselect menu items on the display
Renter characters
Rselect adestination on the map
Rsave entries
The controller can be:
Rturned 3
Rslid left or right 1
Rslid forwards or back 4
Rslid diagonally2
Rpressed briefly or pressed and held 7
Back button
You can use the%button to exit amenu or to
call up the main menu of the currento perating
mode.
XTo exit the menu: briefly press the%
button.
The multimedia system changes to the next
higher menu level in the currento perating
mode.
XTo call up the main menu: press the%
button for longer than two seconds.
The multimedia system changes to the main
menu of the currento peratingmode.
230Operating system
Multimedia system