2018 MERCEDES-BENZ CLA COUPE Owner's Manual

The distance warning function may not give
warnings in all critical situations. There is a
risk of an accident.
Always pay careful attention to the traffic sit-uation and be ready to brake.
Always adapt your speed to suit the prevailing
road and traffic conditions.
GWARNING
The distance warning function cannot always
clearly identify object sand complex traffic
situations.
In such cases, the distance warning function
may:
Rgive an unnecessary warning
Rnot give awarning
There is arisk of an accident.
Always pay careful attention to the traffic sit-
uation and do not rely solely on the distance
warning function.
Function
Starting at aspeed of approximately 4mph
(7 km/h), the distance warning function warns
you if you rapidly approach avehicle in front.A n
intermittent warning ton ewill then sound, and
the · distance warning lamp will light up in
the instrument cluster.
XBrake immediately in order to increase the
distance from the vehicle in front.
or
XTake evasive action, provided it is safe to do
so.
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause the system to display awarning.
With the help of the radar sensor system, the
distance warning function can detect obstacles
that are in the path of your vehicle for an exten-
ded period of time.
Up to aspeed of approximately 44 mph
(70 km/h), the distance warning function can
also react to stationary obstacles, such as stop-
ped or parked vehicles.
Autonomous braking function
If the driver does not react to the distance warn-
ing signal in acritical situation, Active Brake
Assist can assist the driver with the autonomous
braking function.
The autonomous braking function:
Rgives the driver more time to react to critical
driving situations
Rcan help the driver to avoid an accident or
Rreduces the effectsofana ccident
Vehicles without Distance Pilot DISTRONIC: the autonomous braking function is available in
the following speed ranges:
R4-65m ph (7-105 km/h) for moving objects
R4-31mph (7-50km/h)for stationary
objects
Vehicles with Distance Pilot DISTRONIC: the
autonomous braking function is available in the
following speedr anges:
R4-124 mph (7 -200 km/h )for moving
objects
R4-31m ph (7-50km/h)for stationary
objects
Due to the nature of the system ,particularly
complicated but non-critical driving conditions
may als ocaus ethe Autonomou sBraking Func-
tion to intervene.
Situation-dependent braking assis-
tance
General information
iObservet he "Important safety notes" sec-
tion (Ypag e61).
With the help of the rada rsensor system ,Adap-
tive Brake Assist can detect obstacles that are in
the path of you rvehiclef or an extended period
of time.
If Adaptive Brake Assist detects arisk of colli-
sion with the vehicleinf ront, it calculatesthe
brake pressure necessary to avoi dacollision. If
you apply the brakes forcefully ,situation-
dependent braking assistance adapts to the sit-
uation and automatically increases the brake
pressure to adegreea ppropriate to the traffic
situation.
Situation-dependent braking assistance pro-
videsb raking assistance in hazardou ssituations
at speeds above 4mph (7 km/h) .Itusesr adar
Driving safety systems63
Safety
Z

sensor technology to assess the traffic situa-
tion.
Situation-dependent braking assistance is capa-
ble of reacting to moving objects that have
alreadybeen detected as such at least once
over the period of observation, up to vehicle
speeds of around 155 mph (250 km/h).
Situation-dependent braking assistance can
also detect stationary objects, up to vehicle
speeds of around 44 mph (70 km/h).
XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally againi f:
Ryou release the brake pedal.
Rthere is no longer any danger ofacollision.
Rno obstacle is detected in front of your vehi-
cle.
Situation-dependent braking assistance is then
deactivated.
Important safety notes
iObserve the "Important safety notes" sec-
tion for driving safety systems (Ypage 61).
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As aresult, Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist might:
Rintervene unnecessarily
Rnot intervene
There is arisk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. Terminate the
intervention in anon-critical driving situation.
Due to the nature of the system, complex but
non-critical driving conditions may also cause
Active Brake Assist to intervene.
Even if Active Brake Assist is not available due to
am alfunction in the radar sensor system, the
brake system is still available with full brake
boosting effect and BAS.
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes" sec-
tion (Ypage 61).
ESP
®monitors driving stability and traction,i .e.
power transmission between the tires and the
road surface.
If ESP
®detects that the vehicle is deviating from
the direction desired by the driver, one or more
wheels are braked to stabilize the vehicle. The
engine output is also modified to keep the vehi-
cle on the desired course within physical limits.
ESP
®assists the driver when pulling awayo n
wet or slippery roads. ESP®can also stabilize
the vehicle during braking.
ETS/4ETS (Electronic Traction System)
iObserve the "Important safety notes" sec-
tion (Ypage 61).
ETS traction control is part of ESP
®.Onv ehicles
with 4MATIC, 4ETS is part of ESP®.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
awaya nd accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is transfer-
red to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP
®.
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 61).
64Driving safety systems
Safety

GWARNING
If ESP
®is malfunctioning, ESP®is unable to
stabilize the vehicle. Additionally, further driv-
ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully.H ave ESP
®checked at a
qualified specialist workshop.
Vehicles without 4MATIC: when towing your
vehiclew ith the front axle raised, it is important
that you observe the notes on ESP
®
(Ypage2 82).
If the å ESP®OFF warning lamp lights up
continuously,E SP®is deactivated.
If the ÷ ESP®warning lamp and the å
warning lamp are lit continuously,E SP®is not
available due to amalfunction.
Observe the information on warning lamps
(
Ypage2 21) and display messages which may
be shownint he instrument cluster
(
Ypage1 92).
Only use wheels with the recommendedt ire
sizes. Only then wil lESP
®function properly.
Characteristics of ESP®
General information
If the ÷ ESP®warning lamp goes out before
beginning the journey ,ESP®is automatically
active.
If ESP
®intervenes, the ÷ESP®warning lamp
flashes in the instrument cluster.
If ESP
®intervenes:
XDo not deactivate ESP®under any circum-
stances.
XOnly depress the accelerator pedalasf ar as
necessary when pulling away.
XAdapt you rdriving style to sui tthe prevailing
road and weather conditions.
ECOs tart/stop function
The ECO start/stop function switches the
engine off automatically when the vehicles tops
moving. The engine starts automatically when
the driverw ants to pullawa ya gain. ESP
®
remains in its previousl yselected status. Exam-
ple: if ESP®was deactivated before the engine
was switched off, ESP®remains deactivated
when the engine is switched on again.
Deactivating/activating ESP®(except
Mercedes‑AMG vehicles)
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage6 1).
You can select between the following states of
ESP
®:
RESP®is activated.
RESP®is deactivated.
GWARNING
If you deactivate ESP
®,E SP®no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
The spinning of the wheels results in acutting
action for better traction on looses urfaces.
It may be best to deactivate ESP
®in the follow-
ing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
iActivate ESP®as soon as the situations
described above no longer apply.E SP®will
otherwise not be abl etostabilize the vehiclei f
the vehicles tarts to skid or awhee lstarts to
spin.
!Avoid spinning the drivenw heels for an
extended period with ESP®deactivated. You
coul dotherwise damage the drivetrain.
Deactivating/activating ESP®
You can deactivate or activate ESP®via the on-
board computer (Ypag e185).
ESP®deactivated:
The å ESP®OFF warning lamp in the instru-
ment cluster lights up.
ESP
®activated:
The å ESP®OFF warning lamp in the instru-
ment cluster goes out.
Driving safety systems65
Safety
Z

Characteristics when ESP®is deactivated
If ESP®is deactivatedand oneorm orew heels
start to spin,t he÷ ESP®warning lamp in the
instrumentc lusterflashes. In suchs ituations,
ESP
®will no tstabilizet hevehicle.
If you deactivate ESP®:
RESP®no longer improve sdriving stability.
REnginet orque is no longer limited and the
driv ewheels are able to spin.
RTractio ncontrol is still activated.
RActiv eBrake Assist is no longer available; nor
is it activated if you brak efirmly with assis-
tance from ESP
®.
RSTEER CONTROL is no longer active.
RESP®still provides support when you brake
firmly.
Deactivating/activatin gESP®
(Mercedes ‑AM Gvehicles)
Important safety notes
iObserv ethe "Important safety notes" sec-
tio n(Ypage 61).
You can selectb etween thefollowings tate so f
ESP
®:
RESP®is activated.
RSPORT handlingm ode is activated.
RESP®is deactivated.
GWARNING
When SPORT handlingm ode is activated,
there is agreate rrisk of skiddinga nd acci-
dents.
Only activat eSPORT handlingm ode in thesit-
uations describe dinthefollowing.
GWARNING
If you deactivate ESP
®,E SP®no longer sta-
bilizes th evehicle .Thereisani ncreased risk
of skiddinga nd an accident.
Only deactivate ESP
®in th esituations descri-
bed in th efollowing. In th
efollowings ituations,itmay be bette rto
activat eSPORT handlingm ode or deactivate
ESP
®:
Rwhen usings nowc hains
Rind eep snow
Ron sandorg ravel
Ron specially designated roads when th evehi-
cle's own oversteering and understeering
characteristics are desired
Drivin ginSPORT handlingm ode or without
ESP
®requires an extremely qualified and expe-
rienced driver.
iActivate ESP®as soon as th esituations
describe dabovenol onger apply. ESP®will
otherwise no tbeable to stabilizet hevehicle if
th ev ehicle start stoskidoraw heel start sto
spin.
!Avoid spinnin gthe driven wheels for an
extended period with ESP®deactivated. You
coul dotherwise damage th edrivetrain.
Deactivating/activatin gESP®
XTo activate SPORTh andling mode: briefly
pres sbutton :.
The M SPORT handlingm ode warning
lamp in th einstrumentc lusterlightsu p. The
SPORT handling mode
message appearsi n
th em ultifunction display.
XTo deactivat eSPORTh andling mode:
briefly pres sbutton :.
The M SPORT handlingm ode warning
lamp in th einstrumentc lustergoes out.
66Driving safety systems
Safety

XTo deactivate ESP®:press button :until
the å ESP®OFF warning lamp lights up in
the instrument cluster.
The ÷ OFF
message appears in the multi-
functio ndisplay.
XTo activate ESP®:briefl ypress button :.
The å ESP®OFF warning lamp in the
instrument cluster goe sout.T he ÷ ESP®
ONmessage appears in the multifunctio ndis-
play.
Characteristic sofactivatedS PORT han-
dling mode
If SPOR Thandling modeisa ctivatedand one or
more wheels start to spin, the ÷ESP®warn-
ing lamp in the instrument cluster flashes. ESP®
onlys tabilizes the vehicl etoalimite dd egree.
Whe nSPOR Thandling modeisa ctivated:
RESP®onlyimprovesd riving stability to alim i-
ted degree.
RTractio ncontroliss tilla ctivated.
RThe engine's torque is onlyr estrictedtoa
limite ddegreea nd the drive wheels may start
to spin.
The spinning of the wheels results in acutting
action for better tractio nonloose surfaces.
RESP®stil lprovides support when yo ubrake
firmly.
Characteristic swhenE SP®is deactivated
If ESP®is deactivate dand one or more wheels
start to spin, the ÷ESP®warning lamp in the
instrument cluster does not flash. In such situa-
tions, ESP
®will not stabilize the vehicle.
If yo udeactivate ESP®:
RESP®no longer improvesd riving stability.
REngine torque is no longer limite dand the
drive wheels are able to spin.
The spinning of the wheels results in acutting
action for better tractio nonloose surfaces.
RTractio ncontroliss tilla ctivated.
RActive Brake Assist is no longer available ;nor
is it activate difyoubrake firmly with assis-
tance from ESP
®.
RESP®stil lprovides support when yo ubrake
firmly.
ESP®trailer stabilization
General information
If your vehicle/trailer combinatio nbegin sto
swerve ,ESP®assists yo uinthissituation. ESP®
slowst he vehicl edownbyb raking and limiting
the engine outputu ntilthe vehicle/trailer com-
bination hass tabilized.
Important safety notes
GWARNING
If roada nd weather conditions are poor,
traile rstabilization will not be able to prevent
the vehicle/trailer combinatio nfrom swerv-
ing .Trailers with ahighc ente rofg ravity can
tip overb efore ESP
®can detect this. There is
ar iskofana ccident.
Alway sadapt your driving style to the prevail-
ing roada nd weather conditions.
If your vehicl ewitht raile r(vehicle/trailer com-
bination) begins to lurch, yo ucan onlys tabilize
the vehicle/trailer combinatio nbydepressing
the brake firmly.
ESP
®traile rstabilization is active above speeds
of about65k m/h.
ESP
®traile rstabilization does not work if ESP®
is deactivate dordisable dbecause of amalfunc-
tion.
EBD (electronicb rake forcedistribu-
tion)
General information
EBD monitors and controls the brake pressure
on the rearw heelstoi mprove driving stability
whil ebraking.
Important safety notes
iObserve the "Important safety notes "sec-
tio n(Ypage 61).
GWARNING
If EBD is malfunctioning ,the rearw heelscan
lock, e.g .under ful lbraking .Thisi ncreases the
ris kofs kidding and an accident.
Driving safety systems67
Safety
Z

You should therefore adapt your drivingstyle
to the differenth andlingcharacteristics. Have
the brakes ystemchecked at aqualified spe-
cialist workshop.
Please observet he information on warnin gand
indicator lamps (
Ypage 220)
(
Ypage 220) as well as on display messages
(Ypage 194).
ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safetya nd
offers increased braking comfort.Ina ddition to
the braking function ,ADA PTIVE BRAKE also has
the HOLDf unction (
Ypage 157) and hill start
assist (Ypage 125).
STEER CONTROL
Genera linformation
STEER CONTROL helps you by transmitting a
noticeable steeringf orcetothe steeringw heel
in the direction required for vehicle stabilization.
This steeringa ssistanceisprovided in particular
if:
Rboth right wheels or both left wheels are on a
wet or slippery road surfacew hen you brake
Rthe vehicle begins to skid
Important safetynotes
iObserve the "Importan tsafetyn otes" sec-
tion (Ypage 61).
No steeringa ssistanceisprovided from STEER
CONTROL, if:
RESP®is malfunctioning
Rthe steeringism alfunctioning
If ESP®is malfunctioning, you will be assisted
further by the electrical power steering.
Protection against theft
Immobilizer
The immobilizer prevent syour vehicle from
being started without the correctS martKey.
XTo activatewith theSmartKey: remove the
SmartKey from the ignition lock.
XTo activatew ith KEYLESS-GO start-func-
tion or KEYLESS-GO: switchthe ignition off
and open the driver's door.
XTo deactivate: switchont he ignition.
When leaving the vehicle, always tak ethe
SmartKey with you and lock the vehicle. Anyone
can star tthe engin eifavalid SmartKey has been
left inside the vehicle.
iThe immobilizer is always deactivate dwhen
you star tthe engine.
In the eventt hat the engin ecannot be started
(yet the vehicle's battery is charged), the sys-
tem is not operational. Contact an authorized
Mercedes-Ben zCenter or call
1-800-FOR-MERCedes (in the USA )or
1-800-387-0100( in Canada).
ATA (anti-theft alarms ystem)
XTo arm:lock the vehicle with the SmartKe yor
KEYLESS-GO.
Indicator lamp :flashes. The alarm system
is armed after approximately 15 seconds.
XTo disarm: unlock the vehicle with the Smart-
Key or KEYLESS-GO.
or
XInsert the SmartKe yintot he ignition lock.
Av isual and audible alarm is triggered if the
alarm system is armed and you open:
Rad oor
Rthe vehicle with the mechanical key
Rthe trun klid
Rthe hood
68Protection against theft
Safety

XTo turn the alarm off with the SmartKey:
press the%or& button on the Smart-
Key.
The alarm is stopped.
or
XVehicles with KEYLESS-GO start-function
or KEYLESS-GO: remove the Start/Stop but-
ton from the ignition lock (
Ypage 122).
XInsert the SmartKey into the ignition lock.
The alarm is stopped.
XTo stopt he alarm using KEYLESS-GO:
grasp the outsid edoorh andle. The SmartKey
must be outsid ethe vehicle.
The alarm is stopped.
or
XPress the Start/Stop button on the dash-
board .The SmartKey must be insid ethe vehi-
cle.
The alarm is stopped.
The alarm is not switched off, eve nifyouclose
the open door thatt riggered it, for example.
iIf the alarm continue sfor more than
30 seconds ,the mbrace emergency cal lsys-
tem automaticall ynotifie sthe Customer
Assistance Center. Thi sisdonee ither by text
message or data connection.
The emergency cal lsystem send sthe mes-
sage or data provided that:
Ryo uh aves ubscribed to the mbrace service.
Rthe mbrace service hasb eena ctivated
properly.
Rthe necessary mobil ephone network is
available.
Protectiona gainsttheft69
Safety
Z

SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is arisk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If you attach heavy or large object stothe
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident.
Do not attach any heavy or large object stothe
SmartKey. Remove any bulky key rings before
insertingt he SmartKey into the ignition lock.
!Keep the SmartKey away from stron gmag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. amobile phone
or another SmartKey.
Rwith metallic objects, e.g. coins or metal foil.
Rinside metallic objects, e.g. ametal case
Vehicles with KEYLESS-GO startf unction:do
not keep the SmartKey in the trunk.O therwise,the SmartKey may not be detected, e.g. when
startin
gthe engine using the Start/Stop button.
SmartKey functions
:& To lock the vehicle
;FTo open the trunk lid
=%To unlock the vehicle
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
Rthe vehicle is locked again.
Ranti-theft protection is reactivated.
XTo lock: press the &button.
The SmartKey centrally locks/unlocks:
Rthe doors
Rthe trunk lid
Rthe fuel filler flap
The turn signals flash once when unlocking and
three times when locking.
When the locator lighting is activated via the
multimedia system, it lights up when it is dark
after the vehicle is unlocked with the remote
control (see the separate operating instruc-
tions).
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer (
Ypage 187).
XTo open the trunk lid automatically: press
and hold the Fbutton until the trunk lid
opens (
Ypage 79).
70SmartKey
Opening and closing