2018 MERCEDES-BENZ CLA fuel pressure

Protecting the environment
General notes
H Environmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
The objectives are for the natural resources
that form the basis of our existence on this
planet to be used sparingly and in am anner
that takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are affected
by these factors: R
operating condition sofy our vehicleR
your personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions: R
avoid short trips as these increase fuel con-
sumption. R
always make sure that the tire pressures
are correct. R
do not carry any unnecessary weight. R
remove roof racks once you no longer need
them. R
ar egularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals. R
always have service work carried out at a
qualified specialist workshop.
Personal driving style: R
do not depress the accelerator pedal when
startin gt he engine.R
do not warm up the engine when the vehicle
is stationary. R
drive carefully and maintain as afe distance
from the vehicle in front. R
avoid frequent, sudden acceleration and
braking. R
change gear in good time and use each gear
only up to

Holding the vehicle stationary on uphill
gradients
G WARNING
If the clutch overheats, the electronic man-
agement system is automatically deactivated.
This interrupts the power transmission. The
vehicl em ay ,f or example, roll backwards on
gradients. There is ar isk of an accident.
Never hold the vehicl es tationary on uphill
gradients by depressing the accelerator.
The clutch may overheat if you hold the vehicle
stationary on uphill gradients by depressing the
accelerator pedal. If the clutch overheats, a
warning tone sounds.
All vehicle s( except Mercedes-AMG vehi-
cles): the Stop Vehicle Shift to 'P'
Leave Engine Running display message
appears in the multifunction display .Y ou will
only be abl etoc ontinue you rj ourney once the
clutch has coole dd ow na nd the display mes-
sage in the multifunction display has disap-
peared.
Mercedes-AMG vehicles: the Trans. Oil
Overheated Drive on with Care display
message appears in the multifunction display.
Do not hold the vehicl es tationary on uphill gra-
dients by depressing the accelerator pedal.
Instead, only ever hold the vehicl es tationary on
uphill gradients by: R
depressing the brake pedal R
activating the HOLD function R
engaging the electric parking brake
Kickdown Use kickdown for maximu ma cceleration.X
Depress the accelerator peda lb eyond the
pressure point.
The automatic transmission shifts to al ower
gea rd epending on the engine speed.X
Ease off the accelerator peda lo nce the
desired spee disr eached.
The automatic transmission shifts back up.
Mercedes-AMG vehicles: it is only possible to
use kickdown in the automatic drive program
and the temporary manua ld rive program M .
When manua ld rive program M is permanently
activated, kickdown is not possible. For further information on kickdown in manual
drive program M ( Y
pag e1 38).
Rocking the vehicle free Shifting back and forth between transmission
positions [ and ^ can help to free up the
vehicl eifitg ets stuck in mud or snow. The vehi-
cle's engine management system limits the
spee dtoam aximu mof5m ph (9 km/h) when
shifting back and forth. To shift repeatedly
between transmission positions [ and ^ ,
move the DIRECT SELECT leve rupa nd down
pas tt he point of resistance.
Drive programs
Al lv ehicle s( except Mercedes-AMG
vehicles) Drive program C( Comfort)Drive program C is characterized by the follow-
ing: R
the vehicl ed elivers comfortable, economical
handling characteristics. R
the vehicl ep ulls awa ym ore gently in forward
and reverse gears, unless the accelerator
peda lisd epressed fully. R
the vehicl eh as improved driving stability ,f or
exampl eons lippery road surfaces. R
optima lf uel consumption resulting from the
automatic transmission shifting up sooner.
The vehicl eisd rive nint he low engine speed
range and the wheels are less likel ytos pin.
Drive program S( Sport)
Drive program S is characterized by the follow-
ing: R
sporty engine settings. R
the automatic transmission shifts up later.
The fuel consumption possibly being higher
as ar esult of the later automatic transmission
shift points.134
Automatic transmission
Driving and parking

Befor et he engine speed reaches the red area,
an upshift indicator will be show nint he multi-
function display. X
Shift to recommende dg ear C whe nm es-
sage D is show nint he multifunction display.
Kickdown X
For maximum acceleration, depress the
accelerator pedal beyond the pressure point.
The automatic transmission shifts to al ower
gea rd epending on the engine speed.X
Shift back up once the desire ds peed is
reached. During kickdown, yo uc annot shift gears using
the steering wheel paddl es hifters.
If yo ua pply ful lt hrottle ,t he automatic trans-
missio ns hifts up to the next gea rw he nt he
maximum engine speed is reached .T hi sp re-
vents the engine from overrevving.
Mercedes-AMG vehicles: it is only possible to
use kickdown in temporary manual drive pro-
gram M .W he nm anual drive program M is per-
manently activated, kickdown is not possible.
Problems with the transmission Problem
Possible causes/consequence sa nd P Solutions
The transmission has
problem ss hifting gear. The transmission is losing oil. X
Have the transmission checke dataq uali fied specialist workshop
immediately.
The acceleration ability
is deteriorating.
The transmission no lon-
ger shifts into al loft he
gears.
Revers eg ea rc an no lon-
ger be engaged. The transmission is in emergency mode. X
Stop the vehicle. X
Shift the transmission to position ] .X
Switch off the engine. X
Wait at least ten seconds before restarting the engine. X
Shift the transmission to position [ .X
Have the transmission checke dataq uali fied specialist workshop
immediately.
Refueling
Important safety notes
G WARNING
Fue lish ighly flammable. If yo uh andle fuel
incorrectly ,t here is ar is koff ire and explo-
sion. You mus ta void fire ,o pe nf lames, creating
sparks and smoking. Switch off the engine
and ,ifa ppli cable, the auxiliary heating before
refueling.
G WARNING
Fue lisp oisonou sa nd hazardou stoh ealth.
There is ar isk of injury.138
Refueling
Drivin ga nd parking

Drivin gt ip s
General notes
Important safet yn otes
G WARNING
If you switch of ft he ignition whil ed riving,
safety-relevant function sa re only available
wit hl imitations, or no tata ll. Thi sc ou ld affect,
fo re xa mple, th ep owe rs te erin ga nd th eb rake
boostin ge ffect. You will require considerably
more effort to steer and brake .T here is ar is k
of an accident.
Do no ts witch of ft he ignition whil ed riving.
G WARNING
If you operat em ob ile communication equip -
men tw hen driving, you may be distracted
from th et ra ffic situation .Y ou could also los e
contro loft he vehicle. There is ar is kofa n
accident.
Only operat et hi se quipmen tw hen th ev ehicle
is stationary.
Observ et he lega lr equirements fo rt he country
in whic hy ou are driving. Some jurisdiction sp ro -
hibi tt he driver from usin gam ob ile phone whil e
drivin gav ehicle.
If you mak eac al lw hil ed riving, always use
hands-free mode. Only operat et he telephon e
when th et ra ffic situation permits. If you are
unsure ,p ull over to as af el ocation and stop
befor eo peratin gt he telephone.
Bear in min dt ha tatas peed of only 30 mph
(approximately 50 km/h), th ev ehicle cover sa
distanc eo f4 4f t( approximately 14 m) per sec-
ond.
Drive sensibly –s ave fuelObserve the following tips to save fuel: R
The tires should always be inflated to the rec-
ommended tire pressure. R
Remove unnecessary loads. R
Remove roof rack sw hen they are not needed.R
Warm up the engin eatl ow engin es peeds.R
Avoid frequen ta cceleration or braking.R
Have all maintenanc ew ork carried out as
indicated by the servic ei ntervals in the Main- tenance Booklet or by the servic ei nterval dis-
play.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic and in hilly ter-
rain.
Drinking and driving
G WARNING
Drinkin ga nd driving and/or takin gd rugs and
driving are very dangerous combinations.
Even as mall amount of alcohol or drugs can
affect your reflexes, perceptions and judg-
ment.
The possibility of as erious or even fatal acci-
dent is greatly increased when you drink or
take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or tak-
ing drugs.
Emission control
G WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is ar isk of fatal injury. Therefor en ever leave
the engin er unning in enclosed spaces with-
out sufficien tv entilation.
Certain engin es ystems are designed to keep
the level of poisonous component sine xhaust
fumes within legal limits.
These systems only work at peak efficiency if
they are serviced exactly in accordance with the
manufacturer's specifications .A lways have
work on the engin ec arried out at aq ualified
specialist workshop. Mercedes-Benz recom-
mends that you use an authorized Mercedes-
Ben zC enter for this purpose. In particular, work
relevant to safety or on safety-related systems
must be carried out at aq ualified specialist
workshop.
The engin es ettings must not be changed under
any circumstances. Furthermore, all specific
servic ew ork must be carried out at regular
intervals and in accordance with the Mercedes-
Ben zs ervic er equirements. Details can be found
in the Maintenance Booklet.144
Driving tips
Driving and parking

X
Do not us eh ot water and do not wash the
vehicl eind ir ect sunlight.X
Use as of ts po ng etoc lean.X
Use am il dc leaning agent, such as ac ar
shampo oa pp roved by Mercedes-Benz.X
Thoroughl yh os ed ow nt he vehicl ew it hag en -
tle jet of water. X
Do not point the water jet directl yt owards the
ai ri nlet.X
Use plenty of water and rinse ou tt he sponge
frequently. X
Rinse the vehicl ew it hc lean water and dry
thoroughl yw it hac hamois.X
Do not le tt he cleaning agent dry on the paint-
work.
Carefully remove al ld eposit sofr oa ds al ta s
soo na sp os sibl ew he nd rivin ginw in ter.
Powe rw as hers
G WARNING
The water jet fro mac ircular jet nozzl e( di rt
blasters )c an cause invisible exterio rd amag e
to the tire sorc hassi sc omponents. Compo-
nents damage dint hi sw ay ma yf ai lu nexpect-
edly .T here is ar is kofana ccident.
Do not us ep ower washers with circular jet
nozzles to clean the vehicle. Hav ed amaged
tire sorc hassi sc omponents replaced imme-
diately.
! Alway sm ai ntain ad is tance of at least
11.8 in (30 cm )b et ween the vehicl ea nd the
powe rw as he rn ozzle. Informatio na bout the
correct distance is availabl ef ro mt he equip-
ment manufacturer.
Mov et he powe rw as he rn ozzl ea round when
cleaning your vehicle.
Do not ai md ir ectl yata ny of the following:R
Tires R
Doo rg aps, roo fg aps, joints, etc.R
Electrical components R
Battery R
Connectors R
Lamps R
Seals R
Trim R
Ventilatio ns lo ts Damaged seals or electrical components can
lead to leaks or failures.
! Vehicles with decorative film: parts of your
vehicl ea re covered with ad ec orative film.
Maintain ad is tance of at leas t2 7.5 in (70 cm)
between the parts of the vehicl ec overed with
the fil ma nd the nozzl eoft he high pressure
cleaner.
Informatio na bout the correct distance is
availabl ef ro mt he eq uip ment manufacturer.
M
ov et he powe rw as he rn ozzl ea round when
cleaning your vehicle.
Cleanin gt he paintwork
! Do not affix: R
stickers R
films R
magnetic plate sors im ilar items
to painte ds ur faces .Y ou could otherwise
damage the paintwork.
Scratches, corrosive deposits, area sa ff ecte db y
corrosion and damage caused by inadequate
car ec anno ta lway sbec ompletel yr epaired .I n
such cases, visit aq uali fied specialis tw or kshop.X
Remov ed ir ti mmediately, where possible,
whil ea voidin gr ubbi ng too hard.X
Soa ki nsect remains with insect remove ra nd
rinse off the treated area sa ft erwards.X
Soa kb ir dd ropping sw it hw at er and rinse off
the treated area sa ft erwards.X
Remov ec oolant, brake fluid ,t ree resin, oils,
fuel sa nd greases by rubbing gently with a
cloth soaked in petroleu me ther or lighter
fluid. X
Use tar remove rtor emove tar stains.X
Use silicone remove rtor emove wax.
If water no longe rf orms "beads "ont he paint
surface, us et he paint car ep roducts recommen-
de da nd approved by Mercedes-Benz. Thi sist he
cas ea pp roximately every thre etof iv em onths,
depending on the climate conditions and the
car ep roduct used.
If dirt ha sp en etrated the paint surface or if the
paint ha sb ec ome dull ,t he paint cleane rr ecom-
mend ed a nd approved by Mercedes-Benz
s houl dbeu sed.
Do not us et hese car ep roducts in the su noro n
the hoo dw hile the hoo dish ot.Care 263
Maintenance and care Z

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

mation placard and tire pressure table on the
vehicle.
General notes The recommended tire pressures for the tires
mounted at the factory can be found on the
labels described here.
Operation with an emergency spare wheel:
informatio nono peration with an emergency
spare whee lc an be found in the general notes in
the "Emergency spare wheel" section
( Y
page 312).
Further informatio nont ire pressures can be
obtained at aq ualified specialist workshop.
Tire and Loading Information placard
C
Recommended tire pressures
The Tire and Loading Information placard is on
the B-pillar on the driver' ss ide ( Y
page 298).
The Tire and Loading Information placard con-
tains the recommended tire pressures for cold
tires. The recommended tire pressures are valid
for the maximu mp ermissibl el oa da nd up to the
maximu mp ermissibl ev ehicl es peed.
Tire pressure table The tire pressure table is on the inside of the fuel
filler flap .Its hows the tire pressure for all tires
permitted at the factory for this vehicle; see
illustratio n( example). The tire pressure table contains the recommen-
ded pressures for cold tires for various operat-
ing conditions, i.e. differing loa da nd speed con-
ditions.
If at ire size precede sat ire pressure, the fol-
lowing tire pressure informatio niso nly vali df or
that tire size; see illustratio n( example).
The loa dc onditions "partiall yl aden" and "fully
laden" are defined in the table for different num-
bers of occupants and amounts of luggage .T he
actua ln umber of seats may differ.
Some tire pressure table ss how only the rim
diameters instead of the full tire size, e.g. R18 .
Rim diameter is part of the tire size and can be
found on the tire sidewal l( Y
page 302).Tire pressure 291
Wheel sa nd tires Z

If the tire pressures have been set to the lower
values for lighter load sa nd/or lowe rr oad
speeds, the pressures shoul dber eset to the
higher values: R
if you want to drive with an increased load
and/or R
if you want to drive at higher speeds
i The tire pressures for increased load sa nd/
or higher road speeds, shown in the tire pres-
sure table, may have an egative effect on driv-
ing comfort.
If the tire pressure is not set correctly, this can
lea dtoane xcessive build up of heat and as ud-
den loss of pressure.
For more information, contact aq ualifie ds pe-
cialist workshop.
Important notes on tire pressure
G WARNING
If the tire pressure drops repeatedly ,t he
wheel ,v alve or tire may be damaged. Tire
pressure that is too low may resul tina tire
blow-out. There is ar isk of an accident.R
Check the tire for foreign objects. R
Check whether the wheel is losing air or the
valve is leaking.
If you are unabl etor ectify the damage, con-
tact aq ualifie ds pecialist workshop.
G WARNING
If you fit unsuitable accessorie so nto tire
valves ,t he tire valves may be overloaded and
malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire pres-
sure monitors keep the tire valve open. This
can also resul tint ire pressure loss. There is a
risk of an accident.
Only screw the standard valve cap or other
valve caps approved by Mercedes-Benz for
you rv ehicle onto the tire valve.
Use as uitable pressure gauge to check the tire
pressure. The outer appearance of at ire does
not permit any reliable conclusion abou tt he tire
pressure. On vehicle se quipped with the elec-
tronic tire pressure monitor, the tire pressure
can be checked in the on-board computer. The tire temperature and pressure increase
when the vehicle is in motion. This is dependent
on the driving speed and the load.
Therefore, you shoul do nly correct tire pres-
sures when the tires are cold.
The tires are cold: R
if the vehicle has been parked with the tires
out of direct sunlight for at least three hours
and R
if the vehicle has been driven less than 1m ile
(1.6 km)
The tire temperature changes depending on the
outsid et emperature ,t he vehicle speed and the
tire load .Ift he tire temperature changes by
18 ‡( 10 †), the tire pressure changes by
approximately 10 kPa (0.1 bar/1.5 psi) .T ake
this into account when checking the pressure of
warm tires. Only correct the tire pressure if it is
too low for the current operating conditions. If
you check the tire pressure when the tires are
warm, the resulting valu ew il lbeh ighe rt han if
the tires were cold. This is normal. Do not
reduce the tire pressure to the valu es pecified
for cold tires. The tire pressure would otherwise
be too low.
Observe the recommended tire pressures for
cold tires: R
on the Tire and Loading Information placard
on the B-pilla ront he driver's sideR
in the tire pressure table in the fuel fille rf lap
( Y
page 139)
Underinflated or overinflated tires
Underinflated tires
G WARNING
Tires with pressure that is too low can over-
heat and burst as ac onsequence. In addition,
they also suffer from excessive and/or irreg-
ula rw ear, which can severel yi mpair the brak-
ing propertie sa nd the driving characteristics.
There is ar isk of an accident.
Avoid tire pressures that are too low in all the
tires, including the spare wheel.
Underinflated tires may: R
overheat, leading to tire defects R
adversely affect handling292
Tire pressure
Wheel sa nd tires