2018 MERCEDES-BENZ CLA Owners Manual

Vehicles with aT IREFI Tk it
C
Tire inflation compressorD
Tire sealant fille rb ot tle

system (Canad ao nly) or tire pressure monitor
(USA only).
If ap ressure loss warning message appears
in the multifunction display: R
observe the instructions in the displa ym es-
sages ( Y
page 211).R
check the tire for damage R
if driving on, observe the following notes
The driving distance possible in run-flat mode is
approximately 50 miles (80 km) when the vehi-
cle is partiall yl aden. When the vehicle is fully
laden it is approximately 19 miles (30 km).
In addition to the vehicle load, the driving dis-
tance possible depends upon: R
vehicle speed R
road condition R
outside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving conditions
or maneuvers, or it can be increased through a
moderate style of driving.
The driving distance possible in run-flat mode is
counted from the moment the tire pressure loss
warning appears in the multifunction display.
You must not exceed am aximum speed of
50 mph (80 km/h).
When replacing one or all tires, please observe
the following specifications for your vehicle's
tires: R
size R
type and R
the "MOExtended" marking
If at ire has gone flat and cannot be replaced
with aM OExtended tire, as tandard tire may be
used as at emporary measure. Make sure that
you use the proper size and type (summer or
winter tire).
Vehicles equipped with MOExtended tires are
not equipped with aT IREFIT kit at the factory. It
is therefore recommended that you additionally
equip your vehicle with aT IREFIT kit if you mount
tires that do not feature run-flat properties, e.g.
winter tires. AT IREFIT kit may be obtained from
aq ualified specialist workshop.
Important safety notes
G WARNING
When driving in emergency mode, the driving
characteristics deteriorate, e.g. when corner- ing, accelerating quickly and when braking.
There is ar isk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and driving maneuvers,
and driving over obstacles (curbs, potholes,
off-road). This applies in particular to al aden
vehicle.
Stop driving in emergency mode if: R
you hear banging noises. R
the vehicle starts to shake. R
you see smoke and smell rubber. R
ESP ®
is intervenin gc onstantly.R
there are tears in the sidewalls of the tire.
After driving in emergency mode, have the
wheel rims checked at aq ualified specialist
workshop with regard to their further use. The
defective tire must be replaced in every case.
TIREFIT kit
Important safety notes TIREFIT is at ire sealant.
Only valid for USA: You can use TIREFIT to seal
punctures of up to 0.16 in (4 mm), particularly
those in the tire tread. You can use TIREFIT at
outside temperatures down to

inhale TIREFIT fumes .K eep tir es ealant away
fro mc hildren. There is ar isk of injury.
If you com ei nt oc ontac tw ith the tir es ealant,
observe the following: R
Rinse off the tir es ealant fro my our skin
immediately with water. R
If the tir es ealant comes int oc ontac tw ith
your eyes, immediately rinse the mt hor-
oughly with clean water. R
If tir es ealant is swallowed, immediately
rinse your mout ho ut thoroughly and drink
plent yofw ater .Don ot induc ev omiting,
and seek medical attention immediately. R
Immediately change out of clothing which
has com ei nt oc ontac tw ith tir es ealant.R
If an allergic reaction occurs, seek medical
attention immediately.
! Residue fro mt he tir es ealant may com eo ut
of the filler hose after use. This could cause
stains.
Therefore, place the filler hose in the plastic
bag which contained the TIREFIT kit.
H Environmental note
Have the used tir es ealant bottle dispose do f
professionally, e.g. at aq ualified specialist
workshop.
! Do not operat et he tir ei nflation compressor
for longer than ten minutes at at im ew ithout
ab reak .Itm ay otherwise overheat.
The tir ei nflation compressor can be operated
again onc eith as coole dd own.
Comply with the manufacturer’s safet yi nstruc-
tion sont he sticker on the tir ei nflation com-
pressor. Using th eT IREFIT kit X
Do not remove any foreign object sw hich have
penetrate dt he tire, e.g. screws or nails. X
USA only: Remove the tir es ealant bottle, the
accompanying TIREFIT sticker and the tire
inflation compressor fro mt he stowage space
under the trunk floor ( Y
page 271).X
Affix part C of the TIREFIT sticker to the
instrumen tc luster within the driver's field of
vision. X
Affix part D of the TIREFIT sticker near the
valve on the wheel with the defectiv et ire.
X
Remove filler hose

X
Remove th ec ap from valv e k on th ef ault y
tire. X
Screw filler hos e l onto valv e k .X
Inser tp lug

If at ire pressure of 200 kPa (2.0 bar/29 psi) has
been attained after ten minutes: X
Switch off the tire inflation compressor. X
Unscrew the fille rh ose from the valve of the
faulty tire.
Note that tire sealant may escape when you
unscrew the fille rh ose.X
USA only: Stow the tire sealant bottle and the
tire inflation compressor. X
Pull away immediately .X
Stop after driving for approximately ten
minutes and check the tire pressure with the
tire inflation compressor.
The tire pressure must now be at least
130 kPa (1.3 bar/19 psi).
G WARNING
If the required tire pressure is not reached
after driving for as hort period ,t he tire is too
badl yd amaged. The tire sealant cannot repair
the tire in this instance. Damaged tires and a
tire pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is ar isk of accident.
Do not continue driving. Contact aq ualified
specialist workshop.
i USA only: In cases such as the one men-
tioned above ,c ontact an authorized
Mercedes-Benz Center. Or call
1-800-FOR-MERCedes (in the USA) or
1-800-387-0100 (in Canada). X
USA only: Correct the tire pressure if it is still
at least 130 kPa (1.3 bar/19 psi). See the Tire
and Loading Information placard on the driv-
er's side B-pilla rort he tire pressure table in
the fuel fille rf lap for values.X
To increase the tire pressure: switch on the
tire inflation compressor. X
To reduce the tire pressure: depres sp res-
sure release button C next to pressure
gauge D . X
When the tire pressure is correct, unscrew the
fille rh ose from the valve of the sealed tire.
Note that tire sealant may escape when you
unscrew the fille rh ose.X
Screw the valve cap onto the tire valve of the
sealed tire.
X
To remove the tire sealant bottle from the tire
inflation compressor, press together the lock-
ing tabs on the yellow cap. X
Pul lt he tire sealant bottle out of the tire infla-
tion compressor.
The fille rh ose remains attached to the tire
sealant bottle. X
Drive to the nearest qualifie ds pecialist work-
shop and have the tire changed there. X
Have the tire sealant bottle and the fille rh ose
replaced as soon as possible at aq ualified
specialist workshop. X
Have the tire sealant bottle replaced every
four years at aq ualifie ds pecialist workshop.Flat tire 275
Breakdow na ssistance Z

Battery (vehicle)
Important safety notes Specia lt ool sa nd expert knowledg ea re required
when working on the battery ,e .g .r emova la nd
installation. Yo us houl dt herefore have al lw or k
involving the battery carrie do ut at aq uali fied
specialist workshop.
G WARNING
Wor kc arrie do ut incorrectly on the battery
can lead ,f or example, to as hort circui ta nd
thu sd amag et he vehicl ee le ctronics .T hi sc an
lead to functio nr estrictions applying to
safety-relevant systems, e.g the lighting sys-
tem, the ABS (anti-lock braking system )ort he
ESP ®
(Electronic Stability Program). The oper-
ating safety of your vehicl em ay be restricted.
Yo uc ould lose contro loft he vehicle, for
example: R
when braking R
in the event of abrupt steering maneuvers
and/or when the vehicle's speed is not
adapted to the roa dc onditions
There is ar is kofana ccident.
In the event of as hort circui tora similar inci-
dent, contact aq uali fied specialist workshop
immediately. Do not drive any further .Y ou
shoul dh av ea ll work involving the battery car-
rie do ut at aq uali fied specialist workshop.
For further informatio na bout ABS and ESP ®
,
see ( Y
page 61 )a nd ( Y
page 64).
G WARNING
Electrostati cb uild -u pc an lead to the creation
of sparks, which could ignite the highl ye xplo-
sive gases of ab at tery .T here is ar is kofa n
explosion.
Before handling the battery ,t ouch the vehicle
body to remove any existing electrostatic
build-up.
The highl yf lammabl eg as mixture form sw he n
charging the battery as well as when jump-start-
ing. Alway sm ak es ur et ha tn either yo un or the bat-
tery is electrostaticall yc harged. Ab uild -u po f
electrostatic charge can be caused ,f or exam-
ple: R
by wearing clothing made from synthetic
fibers R
du etof rictio nb et ween clothing and seatsR
if yo up us horp ul lt he battery across the car-
pe toro the rs yn theti cm at erialsR
if yo ur ub the battery with ac loth
G WARNING
During the charging process ,ab at tery produ-
ces hydrogen gas. If as hort circui to ccurs or
sparks are created ,t he hydrogen ga sc an
ignite .T here is ar is kofane xplosion.R
Make sure tha tt he positive terminal of a
connected battery does not come into con-
tact with vehicl ep ar ts.R
Never place meta lo bj ects or tool sonab at -
tery. R
It is important tha ty ou observe the descri-
be do rder of the battery terminal sw he n
connecting and disconnecting ab at tery.R
Whe nj ump-starting ,m ak es ur et ha tt he
battery pole sw it hi de ntical polarity are
connected. R
It is particularly important to observe the
describe do rder when connecting and dis-
connecting the jumper cables. R
Never connect or disconnect the battery
terminal sw hile the engine is running.
G WARNING
Battery aci disc austic .T here is ar is kofi njury.
Avoi dc ontact with skin, eyes or clothing. Do
not inhal ea ny battery gases .Don ot lean over
the battery .K ee pc hildren away from batter-
ies. Wash away battery aci di mmediatel yw it h
plenty of clean water and see km edica la tten-
tion.
H Environmental note
Batterie sc ontain dangerous
substances. It is against the
la wtod is pose of them with276
Battery (vehicle)
Breakdo wn assis tance

the househol dr ubbish .T hey
must be collected separately
and recycle dtop rotect the
environment.
Dispose of batteries in an
environmentall yf riendly
manner. Take discharged
batteries to aq uali fied spe-
cialist workshop or as pe cial
collectio np oi nt for used bat-
teries.
! Hav et he battery checked regularly at a
qualified specialis tw or kshop.
Observe the service intervals in the Mainte-
nanc eB ookle torc ontact aq uali fied specialist
workshop for mor ei nformation.
! Yo us houl dh av ea ll work involvin gt he bat-
tery carrie do ut at aq uali fied specialis tw or k-
shop. In the exceptiona lc as et ha titi sn eces-
sary for yo utod is connect the battery your-
self, make sure that: R
yo us wi tch off the engine and remove the
key .Onv ehicles with KEYLESS-GO, ensure
tha tt he ignition is switched off .C he ck that
al lt he indicator lamps in the instrument
cluste ra re off .O therwise, electronic com-
ponents ,s uc hast he alternator, ma yb e
damaged. R
yo uf irst remove the negative terminal
clamp and the nt he positive terminal
clamp. Never swap the termina lc lamps.
Otherwise, the vehicle' se le ctronic system
ma ybed amaged .R
in vehicles with automatic transmission,
the transmission is locked in position P
after disconnecting the battery .T he vehicle
is secur ed a gainst rolling away .Y ou ca
n
the nnol on ge rm ov et he vehicle.
The battery and the cove roft he positive ter-
minal clamp must be installe ds ec urel yd ur ing
operation.
Compl yw it hs af ety precautions and take pro-
tective measures when handling batteries. Risk of explosion.
Fire, open flames and smoking are
prohibited when handling the bat-
tery .A voi dc reating sparks.
Battery aci disc austic. Avoi dc ontact
with skin, eyes or clothing.
Wear suitabl ep rotective clothing,
especiall yg lo ves, apron and face-
guard.
Rinse any aci ds pills immediately
with clear water. Contact ap hysician
if necessary.
Wear ey ep rotection.
Kee pc hildren away.
Observe thi sO pe rator' sM an ual.
For safety reasons, Mercedes-Benz recom-
mend st ha ty ou onl yu se batteries which have
been tested and approved for your vehicl eb y
Mercedes-Benz. Thes eb at teries provide
increase di mpact protection to prevent vehicle
occupants fro ms uf ferin ga ci db ur ns shoul dt he
battery be damage dint he event of an accident.
In order for the battery to achieve the maximum
possibl es er vice life, it must always be suffi-
ciently charged.
Like othe rb at teries ,t he vehicl eb at tery may
discharge ove rt im eify ou do not us et he vehicle.
In thi sc ase, have the battery disconnecte data
qualified specialis tw or kshop .Y ou can also
charge the battery with ac harge rr ecommended
by Mercedes-Benz. Contact aq uali fied special-
is tw or kshop for furthe ri nformation.
Hav et he battery condition of charge checked
mor ef requentl yify ou us et he vehicl em ai nl yf or
short trip sorify ou leav eits tanding idle for a
length yp er iod. Consult aq uali fied specialist
workshop if yo uw is htol eave your vehicle
parked for al on gp er io doft ime.
Onl yr eplace ab at tery with ab at tery tha th as
been recommended by Mercedes-Benz.Battery (vehicle) 277
Breakdow na ssistance Z

Remove th eS ma rtKey if you park th ev ehicl e
and do no tr equire any electrical consumers.
The vehicl ew ill then use ver yl ittl ee ne rgy, thus
conserving battery power .
If th ep ower suppl yh as been interrupted, e.g. if
you reconnect th eb attery, you will hav et o:R
set th ec lock usin gt he multimedia system;
see th es eparat eo perating instruction sR
reset th ef unction for foldin gt he exterio rm ir -
ror si n/out automatically, by foldin gt he mir -
ror so ut once ( Y
page 97)
Charging th eb attery
G WARNIN G
During charging and jump-starting ,e xp losive
gase sc an escape from th eb attery. There is a
ris kofane xp losion .
Particularly avoi df ire, open flames, creating
sparks and smoking. Ensur et he re is sufficien t
ventilation while charging and jump-starting .
Do no tl ean ove rab attery.
G WARNIN G
Battery acid is caustic. There is ar is kofi njury.
Avoid contact wit hs ki n, eyes or clothing .D o
no ti nhale any battery gases. Do no tl ean ove r
th eb attery. Kee pc hi ldren away from batter-
ies. Wash away battery acid immediately wit h
plenty of clean water and seek medical atten -
tion .
G WARNIN G
Ad ischarged battery can freez eatt em pera-
tures belo wf re ezing point. When jump-start - ing th ev ehicl eorc ha rging th eb attery, gase s
can escape from th eb attery. There is ar is ko f
an explosion .
Allow th ef roze nb attery to thaw out before
charging it or jump-starting .
! Only use battery chargers wit ham aximum
charging voltag eo f1 4. 8V .
! Only charge th eb attery usin gt he jump-
starting connection point.
The jump-starting connection poin tisint he
engin ec om partmen t( Y
page 278).X
Open th eh ood. X
Connect th eb attery charge rtot he positive
termina la nd ground poin tint he sam eo rder
as when connecting th ed onor battery in th e
jump-starting procedure ( Y
page 278).
If th ei ndicator/warning lamp sdon ot ligh tupi n
th ei nstrumen tc luste ratl ow temperatures ,iti s
ver yl ikely that th ed ischarged battery has fro-
zen. In this cas ey ou may neither jump-start th e
vehicl en or charge th eb attery. The servic el ife of
at ha wed-out battery may be shorter. The start -
ing characteristics can be impaired, particularly
at low temperatures .H av et he thawed-out bat -
tery checke dataq ualified specialist workshop.
Only charge th ei nstalled battery wit hab attery
charge rw hic hh as been tested and approve db y
Mercedes-Benz .Ab attery charge ru ni ts p ecially
a
dapted for Mercedes-Benz vehicles and tested
and approve dbyM ercedes-Benz is available as
an accessory. It permit st he charging of th eb at -
tery in it si nstalled position .C ontac tana uthor-
ized Mercedes-Benz Cente rf or further informa-
tion and availability. Read th eb attery charger's
operating instruction sb efore charging th eb at -
tery.
Jump-starting
Fo rt he jump-starting procedure ,u se only th ej ump-starting connection point, consisting of ap os -
itive termina la nd ag round point, in th ee ng in ec om partment.
G WARNIN G
Battery acid is caustic. There is ar is kofi njury.
Avoid contact wit hs ki n, eyes or clothing .Don ot inhale any battery gases. Do no tl ean ove rt he
battery. Kee pc hi ldren away from batteries. Wash away battery acid immediately wit hp lenty of
clean water and seek medical attention .278
Jump-starting
Breakdown assistance