MERCEDES-BENZ CLA 2018 Owners Manual

G WARNING
During charging and jump-starting, explosive gase sc an escap ef rom the battery .T here is ar isk
of an explosion.
Particularl ya voi df ire, open flames, creating sparks and smoking. Ensure there is sufficient ven-
tilation while charging and jump-starting. Do not lea no ver ab attery.
G WARNING
During the charging process ,ab attery produces hydrogen gas. If as hort circui to ccurs or sparks
are created ,t he hydrogen gas can ignite. There is ar isk of an explosion.R
Make sure that the positive terminal of ac onnected battery does not come into contact with
vehicl ep arts.R
Never place metal objects or tools on ab attery.R
It is important that you observe the described order of the battery terminal sw hen connecting
and disconnecting ab attery.R
When jump-starting, make sure that the battery pole sw ith identical polarity are connected.R
It is particularl yi mportant to observe the described order when connecting and disconnecting
the jumper cables. R
Never connect or disconnect the battery terminal sw hile the engine is running.
G WARNING
Ad ischarged battery can freeze at temperatures below freezing point. When jump-starting the
vehicl eorc harging the battery ,g ase sc an escap ef rom the battery .T here is ar isk of an explosion.
Allow the frozen battery to thaw out before charging it or jump-starting.
! Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter coul db e
damaged by the non-combusted fuel.
If the indicator/warning lamp sdon ot light up in the instrument cluster at low temperatures, it is very
likel yt hat the discharged battery has frozen. In this case you may neither jump-start the vehicl en or
charge the battery .L et the battery thaw first. The service life of at hawed-out battery may be shorter.
The starting characteristics can be impaired ,p articularl yatl ow temperatures. Have the thawed-out
battery checked at aq ualified specialist workshop.
Do not start the vehicl eu sing ar api dc harging device. If you rv ehicle's battery is discharged, the
engine can be jump-started from another vehicl eorf rom as econd battery using jumper cables.
Observe the following points: R
The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible ,j ump-
start the vehicl eu sing as econd battery or aj ump-starting device.R
You may only jump-start the vehicl ew hen the engine and exhaust system are cold.R
Do not start the engine if the battery is frozen. Let the battery thaw first. R
Only jump-start from batterie sw ith a12Vv oltag er ating.R
Only use jumper cables that are not damaged and have as ufficient cross-section and insulated
terminal clamps. R
Make sure that the two vehicles do not touch. Jump-starting 279
Breakdown assistance Z

Make sure that: R
The jumper cables are not damaged. R
Non-insulated parts of the terminal clamps do not come into contact with other metal parts while
the jumper cables are connected to the battery. R
The jumper cables cannot come into contact with parts that can move when the engine is running,
such as the V-belt pulle yort he fan.X
Secure the vehicle by applying the electric parking brake. X
Shift the transmission to position ] .X
Turn the SmartKey to position Z in the ignition lock and remove it.X
Switch off all electrical consumers, e.g. rear window defroster, lighting, etc. X
Open the hood.
Position number

i Jumper cable sa nd further informatio nr egardin gj ump-startin gc an be obtaine data ny qualified
specialist workshop.
Towing and tow-starting
Important safety notes
G WARNING
Function sr elevan ttos afety are restricted or
no longer available if: R
th ee ngine is no tr unning.R
th eb rak es ystem or th ep ower steering is
malfunctioning. R
there is am alfunctio nint he voltage supply
or th ev ehicle's electrical system.
If your vehicle is bein gt ow ed, muc hm ore
force may be necessar yt os te er or brake.
Ther eisar isk of an accident.
In such cases, use at ow bar. Before towing,
mak es ure that th es te ering moves freely.
G WARNING
You can no longer steer th ev ehicle if the
steering wheel loc kh as been engaged. There
is ar isk of an accident.
Always switch off th ei gnitio nw hen towing the
vehicle with at ow cable or at ow bar.
G WARNING
When towing or tow-startin ga nother vehicle
and its weight is greater than th ep ermissible
gross weight of your vehicle ,t he :R
th et ow ing eye could detach itselfR
th ev ehicle/trailer combinatio nc ould roll-
over.
Ther eisar isk of an accident.
When towing or tow-startin ga nother vehicle,
its weight shoul dn ot be greater than th ep er-
missible gross weight of your vehicle.
Details on th ep ermissible gross vehicle weight
of your vehicle can be foun dont he vehicle iden-
tification plat e( Y
page 314).
! When Activ eB ra ke Assist ,D istance Pilot
DISTRONIC or th eH OL Df unction is activated, th ev ehicle brakes automatically in certain
situations.
To avoid damage to th ev ehicle ,d eactivate
these systems in th ef ollowing or similar sit-
uations: R
when towing th ev ehicle R
in th ec ar wash
! Mak es ure that th ee lectric parking brak ei s
released. If th ee lectric parking brak eisf aulty,
visi taq ualifie ds pecialist workshop.
! Only secure th et ow rope or to wb ar at the
towing eyes. Otherwise, th ev ehicle coul db e
damaged.
! Do no tu se th et ow ing eyes for recover yp ur-
pose sast hi sc oul dd amage th ev ehicle .Ifi n
doubt ,r ecover th ev ehicle with ac ra ne.
! When towing ,p ull away slowly and
smoothly. If th et ra ctive power is to oh igh ,t he
vehicle sc oul dbed amaged.
! The vehicle can be towed am aximum of
30 miles (50km). The t owing speed of 30 mph
(5 0km/h) must no tbee xceeded.
If th ev ehicle has to be towed mor et ha n
30 miles (50km), th ef ront axle must be raised
or th ee ntire vehicle raise da nd transported.
! Do no tt ow with sling-type equipment .T his
coul dd amage th ev ehicle.
! When towing vehicle sw ith KEYLESS-GO,
use th ek ey instead of th eS ta rt/Sto pb utton.
Otherwise, th ea utomatic transmission may
shif ttop osition P when th ed river' sorf ront -
passenger door are opened, whic hc oul dl ead
to damage to th et ra nsmission.
! Vehicles with automatic transmission must
no tbes ta rted by tow-starting. This coul do th -
erwis ed amage th et ra nsmission.
It is bette rtoh ave th ev ehicle transported than
to have it towed away.
If th ev ehicle can no longer be driven because of
an acciden torb reakdown ,y ou have th ef ollow-
ing options: R
Transportin gt he vehicle.Towing and tow-starting 281
Breakdown assistance Z

As ar ule, yo us houl dh av et he vehicl et rans-
ported. R
Towing the vehicl ew it hat ow rop eort ow bar.
Onl yt ow the vehicl eine xceptiona lc ases.
The battery must be connected and charged.
Otherwise, you: R
canno tt urn the SmartKe ytop osition H in
the ignition lock. R
canno tr elease the electri cp ar king brake.R
canno ts hift the transmission to position \\ .
The functio noft he electri cp ar king brake and
the parking lock is dependent on the on-board
voltage.
If the on-board voltag eisl ow or if ther eisas ys -
tem malfunction: R
the electri cp ar king brake ma yn ot be applied
in certain circumstances ,o rR
it ma ynol on ge rbep os sibl etos hift the trans-
mission to position ]
Switch off non-essentia lc onsumers, e.g .t he
radio.
Disar mt he automatic locking feature before the
vehicl eist owed ( Y
page 187). Yo uc ould other-
wise be locked ou tw he np us hing or towing the
vehicle.
Installing/removin gt he towin ge ye
Installing the towin ge ye
The brackets for the screw-i nt owing ey ea re
locate dint he bumpers. The ya re at the rea ra nd
at the front, under covers C . X
Remove the towing ey ef rom the stowage
space.
The towing ey eisl oc ate dw it ht he vehicl et ool
kit under the cargo compartment floor
( Y
page 270).
Vehicles with the TIREFIT kit: the towing ey ei s
beneath the tire inflation compressor
( Y
page 271). X
Press the mark on cover C inwards in the
direction of the arrow. X
Take cover C off the opening. X
Screw in the towing ey ec lockwise to the stop.
Removing the towin ge ye X
Unscrew and remove the towing eye. X
Attach cover C to the bumpe ra nd press until
it engages. X
Place the towing ey eint he stowag ew el l
beneath the cargo compartment floor in the
cargo compartment ( Y
page 270).X
Vehicles with the TIREFIT kit: pu tb ac kt he tire
inflation compressor ( Y
page 271).
Towin gt he vehicle with the fron ta xle
raised Observ et he important safety notes when tow-
ing your vehicl ew it ht he front axl er aised
( Y
page 281).
Only vehicle sw it hou t4 MATIC can be towed
with the fron ta xl er aised.
! Vehicles with 4MATIC must not be towed
with either the front or the rea ra xl er aised, as
doing so will damage the transmission.
Vehicles with 4MATIC ma ye it her be towed away
with both axles on the ground or be loaded up
and transported.
! The ignition must be switched off if the vehi-
cle is being towed with the front axl er aised.
Otherwise, ESP ®
ma yi ntervene and damage
the brake system. X
On vehicle sw it hK EYLESS -GO or the KEY-
LESS-GO start function: yo um us tu se the
SmartKe yi nstea doft he Start/Stop button
( Y
page 123). X
Make sure tha tt he vehicl eiss tationary.X
Turn the SmartKe ytop osit ion H in the igni-
tio nl oc k.282
Towin ga nd tow-starting
Breakdo wn assis tance

X
When the vehicle is stationary, depress the
brake pedal and keep it depressed. X
Shift the automatic transmission to position
] . X
Release the brake pedal. X
Release the electric parking brake. X
Switc ho ff the automatic locking
( Y
page 187). X
Switc hont he hazard warning lamps
( Y
page 102). X
Turn the SmartKey in the ignition lock to posi-
tion Z and leave the SmartKey in the ignition
lock.
Towing av ehicle with both axles on
the ground It is importan tt hat you observe the safety
instruction sw hen towing away your vehicle
( Y
page 281). X
On vehicles with KEYLESS-GO or the KEY-
LESS-GO star tf unction: you must use the
SmartKey instead of the Start/Stop button
( Y
page 123).
The automatic transmission automatically shifts
to position ] when you open the driver's or
front-passenger door or when you remove the
SmartKey from the ignition lock. In order to
ensure that the automatic transmission stays in
position \\ when towing away the vehicle, you
must observe the following points: X
Make sure that the vehicle is stationary. X
Turn the SmartKey to position H in the igni-
tion lock. X
Depress and hold the brake pedal. X
Shift the automatic transmission to position
\\ . X
Leave the SmartKey in position H in the igni-
tion lock. X
Release the brake pedal. X
Release the electric parking brake. X
Switc hont he hazard warning lamps
( Y
page 102).
i In order to signal ac hange of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination
switch as usual. In this case, only the indicator
lamps for the direction of travel flash. After resetting the combination switch, the hazard
warning lamp start sf lashing again.
Transporting the vehicle
4MATIC vehicles or vehicles with auto-
matic transmission
! When the vehicle is loaded for transport, the
fron ta nd rear axles must be stationary and on
the same transportation vehicle. Positioning
over the connection point of the transport
vehicle is not permitted. The drive train may
otherwise be damaged.
All vehicles
! You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steerin gc omponents. Otherwise, the
vehicle could be damaged. X
Turn the SmartKey to position H in the igni-
tion lock ( Y
page 122). X
Shift the transmission to position \\ .
As soon as the vehicle has been loaded: X
Preven tt he vehicle from rolling away by
applying the electric parking brake. X
Shift the transmission to position ] .X
Turn the SmartKey to position Z in the igni-
tion lock and remove it. X
Secure the vehicle.
The towing eye can be used to pull the vehicle
ont oat railer or transporter for transportin gp ur-
poses.Towing and tow-starting 283
Breakdown assistance Z

Note son4 MATIC vehicles
! Vehicle sw it h4 MATIC must not be towed
with eithe rt he front or the rea ra xl er aised, as
doing so will damage the transmission.
Vehicle sw it h4 MATIC ma yo nl ye it he rbet owed
away with both axles on the ground or be loaded
up and transported.
If the vehicle' st ransmission, front, or rea ra xl ei s
damaged, have the vehicl et ransporte dona
truck or trailer.
In the even to fd amag etot he electrical sys-
tem:
If the battery is defective, the automatic trans-
mission will be locked in position ] .Tos hift the
automatic transmission to position \\ ,y ou
must provide powe rtot he vehicle' so n-board
electrica ls ys te mint he same wa yasw he nj ump-
starting ( Y
page 278).
Have the vehicl et ransporte donat ransporte ro r
trailer.
Tow-startin g( em ergency engine
starting)
! Vehicle sw it ha ut omatic transmission must
not be tow-started .Y ou could otherwis ed am -
ag et he automatic transmission.
i Yo uc an find information on "Jump-starting"
under ( Y
page 278).
Fuses
Important safety notes
G WARNING
If yo um an ipulate or bridg eaf aulty fuse or if
yo ur eplace it with af us ew it hah ighe ra mper -
age, the electric cable sc ould be overloaded.
This could resul tina fire. There is ar is kofa n
accident and injury.
Alway sr eplace faulty fuse sw it ht he specified
new fuse sh avin gt he correc ta mperage.
! Onl yu se fuse st ha th av eb ee na pp roved for
Mercedes-Benz vehicles and which have the
correc tf us er at ing for the syste mc oncerned.
Onl yu se fuse sm ar ked with an "S" .O ther- wise ,c omponents or systems could be dam-
aged.
! Make sure tha tnom oisture can ente rt he
fuse bo xw he nt he cover is open.
! When closing the cover, make sure tha titi s
lying correctly on the fuse box. Moistur es eep-
ing in or dirt could otherwis ei mpair the oper-
ation of the fuses.
Th ef uses in your vehicl es er ve to close down
faulty circuits .Ifa fuse blows, al lt he compo-
nents on the circuit and their functions stop
operating.
Blown fuse sm us tber eplaced with fuse soft he
same rating ,w hi ch yo uc an recognize by the
color and value. Th ef us er at ing sa re liste dint he
fuse allocation chart.
Th ef us ea lloc at io nc h art is in the fuse bo xi nt he
front-passenge rf ootwell ( Y
page 285).
If an ewly inserte df us ea ls ob lows ,h av et he
cause traced and rectifie dataq ualified special-
is tw or kshop ,e .g .ana ut horized Mercedes-Benz
Center.
Before changin gaf use X
Secure the vehicl ea gain st rolling away
( Y
page 141). X
Switch off al le le ctrica lc onsumers.X
Vehicle sw it hout KEYLESS-GO: remove the
SmartKe yf ro mt he ignition lock. X
Vehicle sw it hK EYLESS -G Os tart-function
or KEYLESS-GO: open the driver's door.
Th ev ehicl ee le ctronics ar en ow in position
Z .T hi sc orresponds to the SmartKe yb ei ng
remove df ro mt he ignition.
Th ef uses ar el oc ated in variou sf us eb ox es:R
Fuse bo xint he engine compartment on the
left-hand side of the vehicle, when viewed in
the directio noft ravel R
Fuse bo xint he front-passenge rf ootwell
Th ef us ea lloc atio nc hart is on the fuse bo xint he
front-passenge rf ootwell ( Y
page 285).284
Fuses
Breakdow na ssistance

Fuse box in th ee ngine compartment
G WARNIN G
When th eh oo diso pen and th ew indshield
wiper sa re set in motion ,y ou can be injured by
th ew iper linkage. Ther eisar is kofi njury.
Always switch off th ew indshield wiper sa nd
th ei gnition before opening th eh ood.
X
Open th eh ood.X
Use ad ry cloth to remove any moisture from
th ef us eb ox .X
To open : open clamps D .X
Fold up cover C in th ed irection of th ea rrow
and remove it .
X
To close: check whether th es eal is lyin gc or -
rectl yinc ov er C .X
Inser tc ov er C at th eb ac ki nt oo pening s

X
Remove cover

Important safety notes
G WARNIN G
If wheels and tires of th ew rong siz ea re used,
th ew hee lb rakes or suspension component s
may be damaged. Ther eisar is kofana cci-
dent.
Always replace wheels and tires wit ht ho se
that fulfill th es pecification soft he original
part .
When replacing wheels, mak es ur etou se th e
correct: R
designation R
model
When replacing tires ,m ak es ur etou se th e
correct: R
designation R
manufacturer R
model
G WARNIN G
Af lat tire severely impairs th ed riving ,s te er -
ing and braking characteristics of th ev ehicle.
Ther eisar is kofa ccident.
Tires without run-flat characteristics :R
do no td riv ew it haf lat tire.R
immediately replace th ef lat tire wit hy our
emergenc ys par ew hee lors par ew heel, or
consult aq ualified specialist workshop.
Tires wit hr un-flat characteristics :R
pay attention to th ei nformation and warn -
ing notice sonM OExtended tires (tire sw it h
run-flat characteristics).
Accessories that are no ta pprove df or your vehi-
cle by Mercedes-Ben zora re no tb ein gu sed cor-
rectl yc an impair th eo perating safety.
Before purchasing and usin gn on-ap prove d
accessories, visit aq ualified specialist work-
sho pa nd inquire about :R
suitabilit yR
legal stipulation sR
factory recommendation s Further information regarding wheels and tires
can be foun du nder "Wheel/tire combinations"
( Y
page 312).
You can ask for information regarding permitte d
wheel/tire combination satana uthorize d
Mercedes-Ben zC enter.
Information on tire pressur ec an be found:R
on th eT ir ea nd Loading Information placard
on th eB -p illar on th ed river' ss ide
( Y
page 298) R
in th et ir ep ressur et able in th ef uel filler flap
( Y
page 139) R
under "Tir ep ressure" ( Y
page 290)
Operation
Information on driving Chec kt he tire pressur ew hen th ev ehicl ei s
heavily laden and adjust prio rtoat ri p.
While driving ,p ay attention to vibrations, noises
and unusual handlin gc ha racteristics ,e .g .p ull-
ing to on es ide .T his may indicat et ha tt he
wheels or tires are damaged. If you suspec tt ha t
at ir eisd efective, reduce your spee di mmedi-
ately. Stop th ev ehicl eass oo nasp ossible to
chec kt he wheels and tires for damage. Hidden
tire damag ec ou ld also be causing th eu nusual
handlin gc ha racteristics .Ify ou fin dnos ign so f
damage, hav et he tires and wheels checke data
qualified specialist workshop.
When parking your vehicle, mak es ur et ha tt he
tires do no tg et deformed by th ec ur boro th er
obstacles. If they canno tbea voided, driv eo ve r
obstacles suc hasc urbs slowly and at an obtuse
angle. Otherwise, you may damag et he wheels
or tires .
Regula rc hecking of wheels and tires
G WARNIN G
Damaged tires can caus et ir ei nflation pres-
sur el oss .Asar esult ,y ou could lose control of
your vehicle. Ther eisar is kofa ccident.
Chec kt he tires regularly for sign sofd amag e
and replace any damaged tires immediately. Operation 287
Wheels and tires Z

Chec kw heel sa nd tires for damag eatl east once
am onth .C hec kw heel sa nd tires after driv ing
off-road or on roug hr oads. Damaged wheels
can caus eal oss of tir ep ressure. Pay particular
attentio ntod amag es uc ha s:R
Cuts in th et ir esR
Punctures in th et ir esR
Tear sint he tiresR
Bulges on tires R
Deformation or severe corrosio nonw heels
Regular ly check th et ir et re ad dept ha nd the
conditio noft he tread across th ew hole widt ho f
th et ir e( Y
page 288). If necessary, tur nt he
fron tw heel stof ull loc kino rder to inspec tt he
inner side of th et ir es urface.
All wheel sm ust have av alv ec ap to protect the
valv ea gainst dirt and moisture. Do no tm ount
anythin go nt ot he valv eo th er than th es ta ndard
valv ec ap or other valv ec aps approved by
Mercedes-Ben zf or your veh icle .Don ot use any
other valv ec aps or systems ,e .g .t ir ep ressure
monitorin gs ystems.
Regular ly check th ep ressur eofa ll th et ir es par-
ticularly prio rtol on gt ri ps. Adjus tt he tir ep res-
sure as necessary ( Y
page 290).
Observ et he note sont he emergenc ys pare
wheel ( Y
page 312).
The servic el ife of tires depends, amon go th er
things, on th ef oll owin gf actors:R
Dr ivin gs ty leR
Tire pressure R
Distance covered
Notes on tir et re ad
G WAR NING
In suff icie nt tir et re ad will reduce tir et ra ction.
The tir eisnol onger able to dissipat ew ater.
This mean st ha tonw et road surfaces ,t he risk
of hydroplaning increases, in particular where
spee disn ot adapted to suit th ed riving con-
dit ions. Ther eisar is kofa cc iden t.
If th et ir ep ressur eist oo high or to ol ow, tires
may ex hibit diff erent leve ls of wear at diff er-
en tl ocations on th et ir et re ad. Thus ,y ou
should regularly check th et re ad dept ha nd
th ec on di tio noft he tread across th ee nt ir e
widt hofa ll tires. Minimum tir et re ad dept hf or:R
Summer tires: