suspension MERCEDES-BENZ CLA COUPE 2019 Owner's Manual

Problem
Possible
causes/co nsequences and0050 0050
Solutions The
engine doesnot
start. Youcannot hear
the starter motor. The
on-board voltageistoo low because thebattery istoo weak or
discharged.
X Jump-start thevehicle (Ypage 282).
If the engine doesnotstart despite attemptsto jump-st artit:
X Consult aquali fiedspecialist workshop. The
starter motorwasexposed toathermal loadthatwastoohigh.
X Allow thestarter motortocool down forapproximately twominutes.
X Try tostart theengine again.
If the engine stilldoes notstart:
X Consult aquali fiedspecialist workshop. The
engine isnot running
smoothly andismisfir-
ing. There
isamalfunction inthe engine electron icsorinamechanical
componen tof the engine management system.
X Only depress theaccelerator pedalslightly.
Otherwise, non-combusted fuelmay getinto thecatalytic converter
and damage it.
X Have thecause rectified immediately ataqual ified specialist work-
shop. The
coolant temperature
gauge shows avalue
above 248‡(120 †).
The coolant warning
lamp mayalsobeon and
a warning tonemay
sound. The
coolant levelistoo low. Thecoolant istoo hotand theengine isno
longer beingcooled sufficiently.
X Stop assoon aspossible andallow theengine andthecoolant to
cool down.
X Check thecoolant level(Ypage 263). Observe thewarning notes
as you dosoand add coolant ifnecessary. Notes
ontowing vehicles
The vehicle isnot suitable forattaching towbar
systems, suchasthose usedforflat towing or
dinghy towing.
Att aching orusing towbarsystems mayresult in
damage tothe vehicle.
When towing avehicle withtowbarsystems,
safe driving characterist icscannot beguaran-
teed forthe towing vehicle orthe towed vehicle.
The vehicle/trailer combinationmayswerve.
Observe thepermissible towingmethods
(Y page 287)andthenotes ontowing withboth
axles onthe ground (Ypage 286). DYNAMIC
SELECTbutt on(all vehicle s
except Mercedes-AMG vehicles)
Use theDYNAMIC SELECTbutton tochange the
drive program. Depending onthe drive program
selected thefollowing vehiclecharacterist ics
will change:
R the drive (engine andtransmission manage-
ment)
R the suspension (vehicleswithdamping sys-
tem orAMG adaptive sportsuspension sys-
tem)
R the sound ofthe exhaust system(vehicles
with sports exhaust system)
R the steering
R the availa bilityofthe ECO start/ stopfunct ion
R the climate control
Each timeyoustart theengine withtheSmart-
Key orthe Start /Stopbutton, driveprogram Cis DY
NAMIC SELECTbutt on(all vehicl esexce ptMercedes-AMG vehicles)
129Driving andparking Z

R
gliding modeisnot availa ble.
R the ECO start/stop functionisnot availa ble.
Drive programS+(Sport Plus)
Drive program S+ischaracter izedbythe fol-
lowing:
R the vehicle exhibits particularly sportydriving
character istics.
R the automatic transmissionshiftsuplater.
R the fuel consumpt ionpossibly beinghigher as
a result ofthe later automatic transmission
shift points.
R the suspension exhibitsparticularly stiff
springing anddamping settings (vehicles with
AMG adaptive sportsuspension system).
R gliding modeisnot availa ble.
R the ECO start/stop functionisnot availa ble.
Drive programRACE (vehicle swith AMG
adap tivesport suspension system)
The RACE driveprogram ischaracter izedbythe
following:
R the vehicle exhibits drivingcharacter istics
suitable forthe racetrac k.
R all vehicle systems aresetformaximum
sportiness .
R the automatic transmissionshiftsuplater.
R the fuel consumpt ionpossibly beinghigher as
a result ofthe later automatic transmission
shift points.
R the suspension exhibitsparticularly stiff
springing anddamping settings.
R gliding modeisnot availa ble.
R the ECO start/stop functionisnot availa ble. Manual
gearshifting
General notes You
canchange gearyourself usingthesteering
wheel paddle shifters. Thetransm issionmustbe
in position 005Btodo this.
Depending onwhich steering wheelpaddle
shifter ispulled, theautomatic transmission
immediately shiftsintothenext gear down or
up, ifpermitt ed. Mercedes-AMG
vehicles:touse manual shift-
ing, youhave twooptions:
R temporary setting
R permanent setting
If you activate manualgearshifting, themulti-
funct iondisplay willshow thecurrent gear
instead oftransm issionposition 005B.
If manual gearshifting isdeactivated, thegears
will beselected automatically.
Temp orarysetting X
To activat e:shift theDIRECT SELECT lever to
position 005B.
X Pull steering wheelpaddle shifter0043or0044.
Temporary settingwill beactive foracert ain
amount oftime. Under certaincondit ionsthe
minimum amountoftime isexten ded,e.g.inthe
case oflateral acceleration, duringanoverrun
phase orwhen driving onsteep terrain.
X To deactivat e:pull steering wheelpaddle
shifter 0044and hold itin place.
or
X Use theDIRECT SELECT lever toswitch the
transm issionposition.
or X All vehicles (exceptMercedes-A MGvehicles):
use theDYNAMI CSEL ECT button tochange
the drive program.
Mercedes-A MGvehicles: usetheDYNAMI C
SEL ECT controller tochange thedrive pro-
gram. Automa
tictransmission
137Drivingandparking Z

i
If
you donot depres sthe accelera torpeda l
within afew seconds, RACESTART iscan-
celed. Themultifu nctiondisplayshows the
RACE START Canceled RACE
START Canceled message.
X Fully depres sthe accelera torpeda l.
The engine speedisincreased .
The RACE RACE
START START
Release Release
brake brake
to to
start start
messag eappe arsinthe multifu nctiondisplay.
i If
you donot relea sethe brake pedalwithin
a short time,RACE START willbe canceled.
The multifu nctiondisplayshows theRACE RACE
START Canceled START
Canceled message.
X Take yourfoot offthe brake, butkeep the
accelera torpeda ldepres sed.
The vehicle pullsawa yat maximum acceler-
ation.
The RACE RACE
START START
Active Active
message appearsin
the multifu nctiondisplay.
RACE START isdeactiva tedwhen thevehicle
reaches aspeed ofappro ximately 50km/h .
RACE START isdeactiva tedimmedi atelyifyou
relea sethe accelera torpeda lduri ngRACE
START orifany ofthe activation conditions are
no longer fulfilled.The RACE START NotPos‐ RACE
START NotPos‐
sible SeeOperator's Manual sible
SeeOperator's ManualorRACE RACE
START Canceled START
Canceled messageappearsinthe mul-
tifunction display.
i If
RACE START isused repea tedlywithin a
short period oftime, itis only availableaga in
after thevehicle hasbeen driven acertain
distance. AMG
adapt ivesport suspensi onsys-
tem
Gene ralnotes The
electronical lycontrolled dampingsystem
works continuously .This improves driving
safety andride comfort.
The dampi ngistuned individ uallyto each wheel
and depends on:
R you rdriving style,e.g.sporty
R the road surface condition, e.g.bumps
R you rindivid ualselection ofSport orComfort
The suspe nsion setting isadjusted usingthe
corresponding buttoninthe center console.
i The
mode canalso beset using theAMG
DYNAMIC SELECTcontroller (Ypage 130). Each
timeyoustart theengine withtheSmart-
Key orthe Start/St opbutton, Comfort modeis
activated. Forfurther information aboutstarting
the engine, see(Ypage 123).
Sport mode The
firmer setting ofthe suspe nsion tuning in
Sport modeensures evenbetter contact with
the road. Select thismode whenemploy inga
sporty driving style,e.g.onwindi ngcountry
roads.
X Press button 0043.
Indicator lamp0044ligh tsup. You have selected
Sport mode.
The AMG Suspension SystemSPORT AMG
Suspension SystemSPORTmes-
sage appearsinthe multifu nctiondisplay.
Comfort mode In
Comfort mode,thedriving characteristics of
you rvehicle aremore comfortable. Selectthis
mode ifyou favor amore comfortable driving
style, butalso when driving fastonstraight
roads, e.g.highw ays.
X Press button 0043aga inso that indicator
lamp 0044goes out.
You have selected Comfort mode.
The AMG AMG
Suspension Suspension
System System
COMFORT COMFORT
mes-
sage appearsinthe multifu nctiondisplay. 4MATIC
! Never
towthevehicle withoneaxle raise d.
This may dama gethe differentia l.Damage of
this sort isnot covered bythe Mercedes-Benz
Limited Warranty.Allwheel smust remain
either onthe ground orbe fullyraise d.
Observe theinstructions fortowing thevehi- Drivi
ngsystems
161Drivingand parking Z

PSI
(pounds persquar einch)
A standard unitofmeasure fortire pressure.
Aspect ratio
Relationship betweentireheight andtirewidth
in percent .
Tire pressur e
This ispressure insidethetire apply inganout-
ward force toeach square inchofthe tire's sur-
face. Thetirepressure isspecified inpounds per
square inch(psi), inkilopascal (kPa)orinbar.
The tirepressure shouldonlybecorrect edwhen
the tires arecold.
Cold tirepressur e
The tires arecold:
R ifthe vehicle hasbeen parked withthetires
out ofdirect sunlight foratleast three hours
and
R ifthe vehicle hasnotbeen driven further than
1 mile (1.6km)
Tread
The part ofthe tire that comes intocont actwith
the road.
Bead The tirebead ensures thatthetire sits securely
on the wheel. Thereareseveral steelwires inthe
bead toprevent thetire from coming loosefrom
the wheel rim.
Sidewall The part ofthe tire between thetread andthe
bead.
Weight ofoptional extras
The combined weightofthose optional extras
that weigh morethanthereplaced standard
parts andmore than2.3kg(5lbs). These
optional extras,such ashigh-performanc e
brakes, levelcontrol,aroof rack orahigh-per-
formanc ebattery, arenot included inthe curb
weight andtheweight ofthe accessories.
TIN (Tire Identification Number)
This isaunique identifier whichcanbeused by
a tire manufacturer toidentify tires,forexample
for aproduct recall,andthus identify thepur-
chasers. TheTINismade upofthe manufactur-
er's identity code,tiresize, tiretype code and
the manufacturing date. Load
bearing index
The load bearing index(alsoloadindex) isacode
that contains themaximum loadbearing capa-
city ofatire.
Tra ction
Traction isthe result offrict ionbetween thetires
and theroad surface.
Tread wearindicators
Narrow bars(tread wearbars) thataredistrib-
uted overthetire tread. Ifthe tire tread islevel
with thebars, thewear limitof00CD in(1.6 mm)
has been reached.
Occupant distribution
The distribution ofoccupants inavehicle attheir
designated seatingpositions.
Total loadlimit
Nominal loadandluggage loadplus68kg
(15 0lbs )multiplied bythe number ofseats in
the vehicle. Changing
awheel Flat
tire
The "Breakdown assistance"section
(Y page 274)contains information andnotes on
how todeal with aflat tire. Inform ationondriv-
ing with MOExt ended tiresinthe event ofaflat
tire can befound under "MOExt endedtires(tires
with run-flat characterist ics"(Ypage 275). Rotat
ingthe wheels G
WARNING
Int erchanging thefront andrear wheels may
severely impairthedriving characterist icsif
the wheels ortires have different dimensions.
The wheel brakes orsuspension components
may alsobedamaged. Thereisarisk ofacci-
dent.
Rotate frontandrear wheels onlyifthe wheels
and tires areofthe same dimensions.
! On
vehicles equippedwith atire pressure
monitor ,electron iccomponen tsare located
in the wheel. 310
Changing
awheelWheels andtires