light MERCEDES-BENZ CLA 2018 Owner's Manual

G WARNING
If you leave children unsupervised in the vehi-
cle, they coul ds et it in motion by, for example:R
release the parking brake. R
shift the automatic transmission out of the
parking position P .R
start the engine.
In addition, they may operate vehicl ee quip-
ment and become trapped. There is ar isk of
an accident and injury.
When leaving the vehicle, alway st ake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
G WARNING
If persons, particularl yc hildren are subjected
to prolonged exposure to extreme hea to r
cold, there is ar isk of injury ,p ossibly even
fatal .N ever leave children unattended in the
vehicle.
G WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularl yont he metal parts of the child
restraint system. There is ar isk of injury.
If you leave the vehicle, taking the child with
you ,a lway se nsure that the child restraint
system is not expose dtod irect sunlight. Pro-
tect it with ab lanket, for example. If the child
restraint system has been expose dtod irect
sunlight, let it cool dow nb efore securing the
child in it. Never leave children unattended in
the vehicle.
Always ensure that all vehicl eo ccupants have
their seat belts fastened correctly and are sitting
properly .P articular attention must be pai dt o
children.
Observe the safety notes on the seat belt
( Y
pag e4 2) and the notes on correct use of seat
belts ( Y
pag e4 3).
Ab ooster seat may be necessary to achieve
prope rs eat bel tp ositioning for children over
41 lbs (18 kg )u ntil they reach ah eight where a three-point seat bel tc an be properly fastened
without ab ooster seat.
Special seatbelt retractor
G WARNING
If the seat bel tisr eleased while driving, the
child restraint system wil lnol onger be
secure dp roperly .T he special seat bel tr etrac-
tor is disable da nd the inertia real draw sina
portion of the seat belt. The seat bel tc annot
be immediatel yr efastened. There is an
increased risk of injury ,p ossibly even fatal.
Stop the vehicl ei mmediately, paying atten-
tion to road and traffic conditions. Reactivate
the special seat bel tr etractor and secure the
child restraint system properly.
All seat belts in the vehicle, except the driver's
seat belt, are equipped with as pecial seat belt
retractor. When activated, the special seat belt
retractor ensure st hat the seat bel tc annot
slacken once the child seat is secured.
Installing ac hild restraint system: X
Make sure you observe the child restraint
system manufacturer's installation instruc-
tions. X
Pul lt he seat bel ts moothly from the bel to ut-
let. X
Engage seat bel tt ongue in bel tb uckle.
Activating the special seat bel tr etractor:X
Pul lt he seat bel to ut full ya nd let the inertia
reel retract it again.
Whil et he seat bel tisr etracting, you should
hear ar atcheting sound .T he special seat belt
retractor is enabled. X
Push the child restraint system dow nsot hat
the seat bel tist ight and does not loosen.
Removing the child restraint system and deac-
tivating the special seat bel tr etractor:X
Make sure you observe the child restraint
system manufacturer's installation instruc-
tions. X
Press the release button of the seat belt
buckle and guide the seat bel tt ongue back
toward st he bel ts ash guide.
The special seat bel tr etractor is deactivated.Children in the vehicle 55
Safety Z

Top Tether anchorages
The To pT et he ra nchorage points ar ei nstalle di n
the rea rc ompartment behind the head
restraints on the parcel shelf. X
Press down the rea rofc over D in the direc-
tio noft he arrow.
Cover D is raised slightl yatt he front.X
Fol dc over D up.
Vehicle sw it ha djustabl eh ea dr estraints:X
Mov eh ea dr estraint C up.X
Route To pT et he rb el t

G WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularl yont he metal parts of the child
restraint system. There is ar isk of injury.
If you leave the vehicle, taking the child with
you ,a lway se nsure that the child restraint
system is not expose dtod irect sunlight. Pro-
tect it with ab lanket, for example. If the child
restraint system has been expose dtod irect
sunlight, let it cool dow nb efore securing the
child in it. Never leave children unattended in
the vehicle.
Child-proof locks for the rear doors
You secure each door individually with the child-
proof locks on the rear doors. Ad oor secured
with ac hild-proof lock cannot be opened from
insid et he vehicle. When the vehicl eisu nlocked,
the door can be opened from the outside. X
To activate: press the child-proof lock lever
up in the direction of arrow C .X
Make sure that the child-proof locks are work-
ing properly. X
To deactivate: press the child-proof lock
leve rd ow nint he direction of arrow D . Override feature for the rear side win-
dows X
To activate/deactivate: press button C .
If indicator lamp D is lit, operation of the rear
side windows is disabled. Operation is only
possible using the switches in the driver's
door. If indicator lamp D is off, operation is
possible using the switches in the rear com-
partment.
Pets in the vehicle
G WARNING
If you leave animals unattended or unsecured
in the vehicle, they coul dp ress buttons or
switches, for example.
As ar esult, they could: R
activate vehicl ee quipment and become
trapped, for example R
activate or deactivate systems ,t hereby
endangering other road users
Unsecure da nimals coul da ls obef lung around
the vehicl eint he event of an accident or sud-
den steering or braking, thereby injuring vehi-
cle occupants. There is ar isk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey ,e .g. use as uitable anima lt rans-
port box.60
Pets in the vehicle
Safety

Drivin gs af et ys ystems
Overview of drivin gs af et ys ystemsIn this section ,y ou will fin di nformati on about
th ef ol lowin gd rivin gs afet ys ystems :R
AB S( A nti-lock B rakin g S ystem)
( Y
page 61) R
BA S( B rak e A ssist S ystem) ( Y
page 61)R
Active Brak eA ss is t( Y
page 62 )R
ES P ®
( E lectronic S ta bility P ro gram)
( Y
page 64) R
EB D( E lectroni c B rak ef orce D istribution )
( Y
page 67 )R
ADAPTIV EB RAKE ( Y
page 68 )R
STEE RC ONTROL ( Y
page 68)
Important safet yn otesIf you fail to adapt your drivin gs ty le or if you are
inattentive ,t he drivin gs afet ys ystems can nei-
ther reduce th er is kofana cciden tn or override
th el aws of physics. Driving safet ys ystems are
merely aids designed to assist driving. You are
responsible fo rm aintainin gt he distanc etot he
vehicle in front, fo rv ehicle speed, fo rb raking in
goo dt im e, and fo rs ta yin ginl ane. Always adapt
your drivin gs ty le to suit th ep revailin gr oa da nd
weather condition sa nd maintain as af ed istanc e
from th ev ehicle in front. Drive carefully.
The drivin gs afet ys ystems described only wor k
as effectively as possible when there is ade-
quat ec ontac tb etween th et ir es and th er oa d
surface. Please pay special attention to th e
note sont ir es ,r ecommended minimum tire
tread depths, etc. ( Y
page 288).
In wintr yd rivin gc onditi ons, always use winte r
tires (M+ St ir es )a nd if necessary ,s now chains.
Onl yint hi sw ay will the driving safety systems
describe dint hi ss ection work as effectively as
possible.
ABS (Anti-lock Brakin gS ystem)
General information
ABS regulate sb rake pressure in such aw ay that
the wheels do not lock when yo ub rake. This
allows yo utoc ontinue steering the vehicl ew he n
braking. The % ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goe so ut when the engine is running.
ABS works from as peed of abou t5m ph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, eve nw he ny ou
onl yb rake gently.
Important safety notes
i Observe the "Important safety notes "s ec-
tio n( Y
page 61).
G WARNING
If ABS is faulty ,t he wheels could lock when
braking .T he steerability and braking charac-
teristic sm ay be severely impaired .A ddition-
ally ,f urther driving safety system sa re deac-
tivated .T here is an increased danger of skid-
ding and accidents.
Driv eonc arefully. Hav eA BS checked imme-
diately at aq uali fied specialist workshop.
Whe nA BS is malfunctioning ,o the rs ys tems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Y
page 220 )a nd dis-
play messages which ma ybes hown in the
instrument cluster ( Y
page 192).
Braking X
If ABS intervenes: continue to depress the
brake peda lv igorously unti lt he braking sit-
uatio ni so ver. X
To make af ul lb rake application: depress
the brake peda lw it hf ul lf orce.
If ABS intervene sw he nb raking ,y ou will fee la
pulsing in the brake pedal.
The pulsating brake peda lc an be an indication
of hazardou sr oa dc onditions, and functions as a
reminder to take extra car ew hile driving.
BAS (Brak eA ssis tS ystem)
General information
BAS operates in emergency braking situations.
If yo ud ep ress the brake peda lq ui ckly, BAS
automaticall yb oo sts the braking force ,t hus
shortening the stopping distance.Driving safety systems 61
Safety Z

KEYLESS- GO
Gene ra ln ot esBear in min dt ha tt he engin ec an be started by
any of th ev ehicl eo cc upant sift he re is aS ma rt -
Key in th ev ehicle.
Lockin ga nd unlockingYou can start ,l oc koru nloc kt he vehicl eu sin g
KEYLESS-GO .Todot hi s, you only need carry th e
SmartKey wit hy ou. You can combine th ef unc-
tion sofK EY LESS-GO wit ht ho se of ac onven-
tional SmartKey. Unloc kt he vehicl ebyu sin g
KEYLESS-GO ,f or instance ,a nd loc kitu sin gt he
7 butto nont he SmartKey.
The driver's door and th ed oor at whic ht he han -
dle is used ,m us tb ot hbec losed. The SmartKey
mus tbeo utside th ev ehicle. Whe nl ocking or
unlocking wit hK EY LESS-GO ,t he distanc e
between th eS ma rtKey and th ec orre sponding
door handle mus tn ot be greate rt ha nt hr ee fee t
(on em eter).
Ac heck whic hp eriodically establishes ar adi o
connection between th ev ehicl ea nd th eS ma rt -
Key determine sw hether av alid SmartKey is in
th ev ehicle. This occurs, for example: R
when starting th ee ng in eR
while drivin gR
when usin gH ANDS-F RE EA CCESSR
when th ee xternal door handles are touchedR
during convenience closin g
X
To unlock th ev ehicle: touch th ei nner sur -
fac eoft he door handle.X
To lock th ev ehicle: touch sensor surfac e C
or D . Mak es ur et ha ty ou do no tt ou ch th ei nner
surfac eoft he door handle. X
Convenienc ec losin gf eature: touch
recessed sensor surfac e D for an extended
period.
Further information on th ec onveni ence clos-
ing feature ( Y
page 83).
X
To unlock th et ru nk lid : pull trunk lid han -
dle C .
Deactivating and activating If you do no ti nten dtou se th ev ehicl ef or al on -
ger period of time, you can deactivat eK EY LESS -
GO. The SmartKey will then use ver yl ittl ep ower,
thereby conserving battery power. Fo rt he pur-
poses of activation/deactivation ,t he vehicl e
mus tn ot be nearby. X
To deactivate: press th e 7 butto nont he
SmartKey twice in rapi ds uccession .
The battery chec kl amp of th eS ma rtKey
flashes twice briefl ya nd lights up once ,t he n
KEYLESS-GO is deactivated ( Y
page 73).X
To activate: press any butto nont he Smart -
Key.
or X
Inser tt he SmartKey int ot he ignition lock.
KEYLESS-GO and all of it sa ssociated features
are available again .
KEYLESS- GO star tf un ction
Gene ra ln ot es
Bear in min dt ha tt he engin ec an be started by
any of th ev ehicl eo cc upant sift he re is aS ma rt -
Key in th ev ehicle.SmartKey 71
Opening and closing Z

SmartKey battery
Important safety notes
G WARNING
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed, it can result in
severe health problems. There is ar isk of fatal
injury.
Keep batteries out of the reach of children. If
ab attery is swallowed, seek medical attention
immediately.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm .
Mercedes-Benz recommends that you have the
battery replaced at aq ualified specialist work-
shop.
Checking the battery
X
Press the 7 or 6 button.
The battery is working properly if battery
check lamp C lights up briefly.
The battery is discharged if battery check
lamp C does not light up briefly.X
Change the battery ( Y
page 73).
i If the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the 7 or 6 button:R
locks or R
unlocks the vehicle
i You can get ab attery at any qualified spe-
cialist workshop. Replacing the battery You require aCR2 025 3Vc ell battery.X
Take the mechanical key out of the SmartKey
( Y
page 72).
X
Press mechanical key D into the opening in
the SmartKey in the direction of the arrow
until battery tray cover C opens. When doing
so, do not hold cover C shut.X
Remove battery tray cover C .
X
Repeatedly tap the SmartKey against your
palm until battery

Problem
Possible causes/consequences and P Solutions
KEYLESS-GO is malfunctioning. X
Lock/unlock the vehicle using the remote control function of the
SmartKey. X
Have the vehicle and SmartKey checked at aq ualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function: X
Unlock ( Y
page 77) or lock ( Y
page 77) the vehicle using the
mechanical key. X
Have the vehicle and SmartKey checked at aq ualified specialist
workshop.
The engine cannot be
started using the Smart-
Key. The on-board voltage is too low. X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X
Check the starter battery and charge it if necessary ( Y
page 278).
or X
Jump-start the vehicle ( Y
page 278).
or X
Consult aq ualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle. The vehicle is locked. X
Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 73) and replace it if necessary
( Y
page 73).
If this does not work: X
Start your vehicle with the SmartKey in the ignition lock.
There is interference from ap owerful source of radio waves.X
Start your vehicle with the SmartKey in the ignition lock.
You have lost aS mart-
Key. X
Have the SmartKey deactivated at aq ualified specialist workshop.X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well. SmartKey 75
Opening and closing Z

Door s
Important safet yn otes
G WARNING
If children are lef tu nsupervised in th ev ehicle,
they could: R
ope nt he doors ,t hu se nd angerin go th er
people or road users. R
get out and disrup tt ra ffic .R
operat et he vehicle' se quipment.
Additionally, children could set th ev ehicle in
motion if, fo re xa mple, they:R
release th ep arking brake .R
shiftin gt he automatic transmissio no ut of
par kp osition PR
Start th ee ng ine.
There is ar is kofana cciden ta nd injury.
Whe nl eavin gt he vehicle, always take th e
SmartKey wit hy ou and loc kt he vehicle. Never
leav ec hi ldren or animals unattended in th e
vehicle. Always keep th eS ma rtKey out of
reach of children .
You should preferably plac el uggage or load si n
th ec argo compartment. Observ et he loadin g
guidelines ( Y
page 237).
Unlockin ga nd opening doors from
th ei nside
! The sid ew indows will no to pen/close if th e
battery is discharged or if th es id ew indows
hav ei ce du p. It will then no tbep ossible to
close th ed oor. Do no ta ttemp ttof orce th e
doo rc lo sed. You could otherwise damage th e
doo rort he sid ew indow.
Whe nad oo riso pened, th es id ew indow on that
sid eo pens slightly. Whe nt he doo risc lo sed, th e
sid ew indow close sa gain . X
To unlock an do pe naf ro nt door: pull doo r
handle D .
If th ed oo risl ocked, locking knob C pop su p.
The doo risu nlocke da nd opens .X
To unlock ar ea rd oor: pull up locking
knob C .
The doo risu nlocke da nd can be opened.X
To ope nar ea rd oor: pull doo rh andle D .
You can ope nad oo rf ro mi ns id et he vehicle
eve nifith as bee nl ocked. You can only ope nt he
rea rd oors from insid et he vehicle if they are no t
secure dbyt he child-proof locks ( Y
page 60).
If th ev ehicle has previously bee nl ocke dw it h
th eS ma rtKey from th eo utside, opening ad oo r
from th ei ns id ew ill trigger th ea nti-thef ta lar m
system. Switc ho ff th ea lar m( Y
page 68).
Centrally locking an du nl ocking th e
vehicle from th ei nsideYou can centrall yl oc koru nloc kt he vehicle from
th ei ns ide. Thi sc an be useful if you wish to loc k
th ev ehicle befor ep ulling away, fo re xa mple.
X
To unlock : press butto n C .X
To lock : press butto n D .
If all th ed oors and th et ru nk lid are closed, th e
vehicle locks .76
Doors
Opening an dc losing

X
To open: pull remote operating switch C for
the trunk li du nti lt he trunk li do pe ns.
Emergenc yr eleas ef or the trunk
General notes
! The trunk li ds wi ng su pwar ds when opened.
Therefore, make sure tha tt her eiss uf ficient
clearance above the trunk lid.
The opening dimensions of the trunk li dc an be
found in the "Vehicle data" section
( Y
page 320).
If the trunk li dc an no longer be unlocked:R
using the SmartKey ,o rR
using the remote operating switch in the door
contro lp an el:
Use the emergency release on the insid eoft he
trunk lid.
Yo uc an reach the emergency release via the
trunk.
Opening X
Fol dt he rea rs ea tb ac kres tf orwards
( Y
page 240). X
Insert as ui tabl et ool D ,e .g .as crewdriver,
into opening C in the paneling.
The trunk li disr eleased. X
Ope nt he trunk lid.
Emergenc yr eleas eb uttonYo uc an open the trunk li df rom insid et he vehi-
cle with the emergency release button.
X
Press emergency release button C briefly.
The trunk li du nlocks and opens.
The trunk li dc an be unlocke da nd opene dw it h
the trunk li de mergency release when the vehi-
cle is stationary or whil ed riving.
The trunk li de mergency release does not open
the trunk li dift he battery is disconnected or
discharged.
Trunk li de mergency release light: R
Emergency release button C flashe sf or
30 minutes afte rt he trunk li diso pe ned.R
Emergency release button C flashe sf or
60 minutes afte rt he trunk li disc losed.
Side windows
Important safety notes
G WARNING
While opening the side windows ,b od yp ar ts
could become trappe db et ween the side win-
do wa nd the door frame as the side window
moves. There is ar is kofi njury.
Make sure tha tn obod yt ouche st he side win-
do wd ur ing the opening procedure. If some-Side windows 81
Opening and closing Z

On vehicles with ap anorama roof with power
tilt/sliding panel: X
Press and hold the 7 button agai nu ntil the
roller sunblind of the panorama roof with
power tilt/sliding panel closes. X
To interrup tc onvenienc ec losing: release
the 7 button.
Using KEYLESS-GO The driver's door and the door at which the han-
dle is used, must both be closed. The SmartKey
must be outside the vehicle. The gap between
the SmartKey and the corresponding door han-
dle should not be greater than 3ft(1m ).
X
Touch recessed sensor surface C on the
door handle until the side windows and the
panorama roof with power tilt/sliding panel
are fully closed.
i Make sure you only touch recessed sensor
surface C .X
Make sure that all the side windows are
closed. X
Make sure that all the side windows and the
panorama roof with power tilt/sliding panel
are closed. On vehicles with ap anorama roof with power
tilt/sliding panel: X
Touch recessed sensor surface C on the
door handle agai nu ntil the roller sunblind of
the panorama roof with power tilt/sliding
panel closes. X
To interrup tc onvenienc ec losing: release
recessed sensor surface C on the door han-
dle.
Resetting the side windows If as ide window can no longer be closed fully,
you must reset it. X
Close all the doors. X
Turn the SmartKey to position G or H in the
ignition lock ( Y
page 122). X
Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed ( Y
page 82).X
Hold the switch for an additional second.
If the side window opens agai ns lightly:X
Immediately pull the corresponding switch on
the door control panel until the side window is
completely closed ( Y
page 82).X
Hold the switch for an additional second. X
If the respective side window remains closed
after the button is released ,t hen it has been
set correctly. If this is not the case, repeat the
steps above.
Problems with the side windows
G WARNING
If you close as ide window agai ni mmediately after it has been blocked or reset, the side window
closes with increased or maximum force. The reversing feature is then not active. Parts of the
body could be trapped in the closing area in the process. This poses an increased risk of injury or
even fatal injury.
Make sure that no parts of the body are in the closing area. To stop the closing process, release
the switch or push the switch agai ntor eopen the side window.84
Side windows
Opening and closing