2018 MERCEDES-BENZ CLA COUPE start stop button

ProblemPossible causes/consequences andMSolutions
The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak or
discharged.
XJump-start the vehicle (Ypage 278).
If the engine does not start despite attempt stojump-start it:
XConsult aqualified specialist workshop.
The starter motor was exposed to athermal load that was too high.
XAllow the starter motor to cool down for approximately two minutes.
XTry to start the engine again.
If the engine still does not start:
XConsult aqualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing.There is amalfunction in the engine electronics or in amechanical
componentoft he engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
XHave the cause rectified immediately at aqualified specialist work-
shop.
The coolant temperature
gauge shows avalue
above 248 ‡(120 †).
The coolant warning
lamp may also be on and
aw arning tone may
sound.The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 260). Observe the warning notes
as you do so and add coolant if necessary.
DYNAMIC SELECTb utton (all vehicles
except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to change the
drive program. Depending on the drive program
selected the following vehicle characteristics
will change:
Rthe drive (engine and transmission manage-
ment)
Rthe suspension (vehicles with damping sys-
tem or AMG adaptive sport suspension sys-
tem)
Rthe steering
Rthe availability of the ECO start/stop function
Rthe climate control:
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information about starting
the engine, see (
Ypage 125).
XPress DYNAMIC SELECT button :as many
times as necessary until the desired drive
program is selected.
The selected drive program appears in the
multifunction display.A fter five seconds the
display goes out and the status icon of the
selected drive program appears.
128DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)
Driving and parking

In addition, the current drive program settings
are displayedbrieflyint he multimedia system
display.
iIn af ew countries, the ECO start/stop func-
tion is deactivated at the factory due to the
available fuel grade.Int his case, the ECO
start/stop function is not available in any
drive program, regardless of the display in the
multimedia system display.
Available drive programs:
C ComfortComfortable and economi-
cal driving characteristics
SSportSporty driving characteris-
tics
IIndividualIndividual settings
E EconomyParticularly economical
driving characteristics
Additional information for drive programs
(Ypage 134).
You can also change gear yourself using the
steering wheel paddle shifters. For further infor- mation on the manua ldrive program
(
Ypage 136).
DYNAMIC SELECT controller
(Mercedes-AMG vehicles)
Use the DYNAMIC SELECT controller to change
the drive program. Depending on the drive pro-
gram selected the following vehicle character-
istics willc hange:
Rthe drive
Rthe transmission management
RESP®
Rthe suspension (vehicles with AMG adaptive
sport suspension system)
Rthe availability of the ECO start/stop function
Rthe availability of gliding mode
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information abouts tarting
the engine, see (
Ypage 125).
XTurn DYNAMIC SELECT controller :as many
times as necessary until the desiredd rive
program is selected.
The selected drive program appears in the
multifunction display. After five seconds the
display goes out and the status icon of the
selected drive program appears.
The drive program indicator on DYNAMIC
SELECT controller :lights up in red.
Available drive programs:
I IndividualIndividual settings
C ComfortComfort-oriented, opti-
mum-economy engine and
transmission settings
SSportSporty engine and trans-
missions ettings
S+Sport PlusParticularly sporty trans-
missions ettings
RaceMaximums portiness and
engine and transmission
settings suitable for the
racetrack
Additional information for drive programs
(Ypage 134).
You can also change gear yourself using the
steering wheel paddle shifters. For further infor- mation on the manua ldrive program
(
Ypage 136).
DYNAMIC SELECTc ontroller( Mercedes-AMG vehicles)129
Driving and parking
Z

At transmission fluid temperaturesbelow Ò4‡
( Ò20 †),y oucan onlys hift outofp arkp osition
j into another transmission positio nwhent he
engine is running.
In order to shift from park position jdirectly
into korh:
Rdepress the brake peda land
Rpush the DIRECT SELECTl ever up or down
past the first point of resistance
Engagin gpark position Pautomatically
Park position jis automaticall yengaged if:
Ryous witch off the engine using the SmartKey
and remove the SmartKey
Ryo us witch off the engine using the SmartKey
or using the Start/Stop button and open the
driver's door or front-passenger door
Ryo uo pent he driver's door when the vehicl eis
stationar yorwhend riving at averyl ow speed
and the transmission is in position hork
Unde rcertain conditions, the automatic trans-
mission shifts to transmission position jauto-
maticall yifthe HOLD functio norDistance Pilot
DISTRONICi sactivated.O bservethe informa-
tio nont he HOLD functio n(
Ypage 157)and
Distance Pilo tDISTRONIC(Ypage 154).
Engagin grevers egearR
!Onlym ove the automatic transmission to
k when the vehicl eisstationary.
XDepres sthe brake and kee pitpressed.
XPush the DIRECT SELECTl ever up past the
first point of resistance.
The ECO start/stopf unctio nisn ot available
when revers egearise ngaged .Further informa-
tio nont he ECO start/stopf unction
(
Ypage 126).
Shiftin gtoneutral N
GWARNING
If children ar eleftu nsupervised in the vehicle,
they could:
Ropen the doors,t husendangering other
people or roadu sers.
Rget outa nd disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicl ein
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission outo f
park position P
RStartthe engine.
There is ariskofana ccident and injury.
Whe nleavi ng the vehicle, always take the
SmartKeyw ithy ou and lock the vehicle. Never
leav echildren or animals unattended in the
vehicle. Alway skeept he SmartKeyo utof
reach of children.
XIf the transmission is in position hork:
push the DIRECT SELECTl ever up or down to
the first point of resistance.
XIf the transmission is in position j:depress
the brake peda land push the DIRECT SELECT
lever up or down to the first point of resist-
ance.
If yo uswitch the engine off with the transmis-
sion in position korh,t he automatic trans-
mission shifts to iautomatically.
With the SmartKey: if youthen open the driv-
er' sd oorort he front-passenger door or remove
the SmartKeyf rom the ignition, the automatic
transmission shifts to jautomatically.
With the Start/Stopb utton:if youthen open
the driver's door or the front-passenger door,
the automatic transmission shifts to jauto-
matically.
If yo uwantthe automatic transmission to
remai ninneutral i,e.g.w he
n
h aving the vehi-
cle cleane dinanautomatic car wash with a
towing system:
XVehicles with the Start-Stop button:
remove the Start-Stop button from the igni-
tio nlock.
XInsert the SmartKeyi nto the ignition lock.
XAllv eh icles: switch the ignition on.
XDepres sthe brake peda land kee pit
depressed.
XEngage neutral i.
XReleasethe brake pedal.
XReleas ethe electri cparking brake.
XSwitch off the ignition and leav ethe SmartKey
in the ignition lock.
Automatict ransmission131
Driving andparking
Z

Transmission positions
BPark position
Thisprevents the vehicl efromr olling
away when stopped.
Onlys hift the transmission to posi-
tion jwhen the vehicl eisstation-
ary. The parkin gloc ks houl dnot be
used as abrake when parking.
Alway sapply the electronic parking
brake in additio ntothe parkin gloc k
in order to secur ethe vehicle.
In the event of amalfunctio nofthe
vehicle's electronics ,the transmis-
sion mayl ockinp osition j.H ave
the vehicl eelectronics checked
immediatel yataqualified specialist
workshop.
Park position jis automatically
engaged if:
Ryo us witch off the engine using the
SmartKeya nd remove the Smart-
Key
Ryo us witch off the engine using the
SmartKeyoru sing the Start/Stop
button and open the driver's door
or front-passenge rdoor
Ryouo pent he driver's door when
the vehicl eisstationar yorwhen
drivin gatav eryl ow spee dand the
transmission is in position hor
k
CRevers egear
Onlys hift the transmission into posi-
tion kwhen the vehicl eisstation-
ary.
ANeutral
Do not shift the transmission to i
whil edriving. The automatic trans-
mission could otherwis ebedam-
aged.
No powe ristransmitted fromt he
engine to the drive wheels.
Releasing the brakes will allo wyouto
mov ethe vehicl efreely, e.g .topush
it or tow it.
If ESP
®is deactivated or faulty: shift
the transmission to position iif the
vehicl eisind angerofs kidding,e.g.
on icy roads.
If yo uswitch the engine off with the
transmission in position korh,
the automatic transmission shifts to
i automatically.
!Coasting in neutral imay
cause damage to the drive train.
7Drive
The automatic transmission changes
gear automatically. All forward gears
ar ea vailable.
Driving tips
Changin ggear
The automatic transmission shifts throug hthe
individual gear sautomaticall ywhenitisint rans-
mission position h.Thisa utomatic gear shift-
ing behavio risdetermine dby:
Rthe selecte ddrive program
Rthe positio nofthe accelerator pedal
Rthe roa dspeed
Accelerator peda lposition
Your style of drivin ginfluences how the auto-
matic transmission shifts gear:
Rlittle throttle :early upshifts
Rmor ethrottle :lat eu pshifts
Automati ctransmission133
Driving an dparking
Z

Rgliding mode is not available.
Rthe ECO start/stop function is not available.
Drive program S+ (Sport Plus)
Drive programS+is characterized by the fol-
lowing:
Rthe vehicle exhibits particularly sporty driving
characteristics.
Rthe automatic transmission shifts up later.
Rthe fuel consumption possibly being higher as
ar esult of the later automatic transmission
shift points.
Rthe suspension exhibits particularly stiff
springing and damping settings (vehicles with
AMG adaptive sport suspension system).
Rgliding mode is not available.
Rthe ECO start/stop function is not available.
Drive program RACE (vehiclesw ith AMG
adaptive sport suspension system)
The RACE drive program is characterized by the
following:
Rthe vehicle exhibits driving characteristics
suitable for the racetrack.
Rall vehicle systems are set for maximum
sportiness.
Rthe automatic transmission shifts up later.
Rthe fuel consumption possibly being higher as
ar esult of the later automatic transmission
shift points.
Rthe suspension exhibits particularly hard
springing and damping settings.
Rgliding mode is not available.
Rthe ECO start/stop function is not available.
Manual gear shifting
General notes
You can change gear yourself using the steering wheel paddle shifters. The transmission must be
in position hto do this.
Depending on which steering wheel paddle
shifter is pulled, the automatic transmission
immediately shifts into the next gear down or
up, if permitted. Mercedes-AMG vehicles:
to use manual shift-
ing, you have two options:
Rtemporary setting
Rpermanent setting
If you activate manual gearshifting, the multi-
function display will show the current gear
instead of transmission position h.
If manual gearshifting is deactivated, the gears
will be selected automatically.
Temporar ysetting
XTo activate: shift the DIRECT SELECT lever to
position h.
XPull steering wheel paddle shifter :or;.
Temporary setting will be active for acertain
amount of time. Under certain conditions the
minimum amount of time is extended, e.g. in the case of lateral acceleration, during an overrun
phase or when driving on steep terrain.
XTo deactivate: pull steering wheel paddle
shifter ;and hold it in place.
or
XUse the DIRECT SELECT lever to switch the
transmission position.
or
XAll vehicles (except Mercedes-AMG vehicles):
use the DYNAMI CSELECT button to change
the drive program.
Mercedes-AMG vehicles: use the DYNAMIC
SELECT controller to change the drive pro-
gram.
136Automatic transmission
Driving and parking

Parking
Important safety notes
GWARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system or exhaust
gas flow. There is arisk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the vehi-
cle which are hot. Take particular care not to
park on dry grassland or harvested grain
fields.
GWARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking position P.
Rstart the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is arisk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
!Always secure the vehicle correctly against
rolling away.O therwise, the vehicle or its driv-
etrain could be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally:
Rthe electric parking brake must be applied.
Rthe transmission must be in position jand
the transmission position display must show
j in the multifunction display.
Rthe SmartKey must be removed from the igni-
tion lock.
Ron uphill or downhill gradients, the front
wheels must be turned towards the curb.
Switching off the engine
Important safety notes
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away.T here isarisk of an
accident.
After switching off the engine, always switch
to parking position P.Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
Automatic transmission
XApply the electric parking brake.
XAll vehicles (except Mercedes-AMG vehi-
cles): shift the transmission to position j.
XMercedes-AMG vehicles:press button:.
XWith the SmartKey : turn the SmartKey to
position gin the ignition lock and remove it.
The immobilizer is activated.
XWith the Start/Stop button: press the
Start/Stop button (Ypage 122).
The engine stops and all the indicator lamps in
the instrumentc luster go out.
If the driver's door is closed, this is the same
as key position 1.Ifthe driver's door is open,
this is the same as key position g,i.e. the
SmartKey having been removed.
If you switch the engine off with the transmis-
sion in position korh,t he automatic trans-
mission shifts to iautomatically.
With the SmartKey: if you then open the driv-
er's door or the front-passenger door or remove
Parking141
Driving and parking
Z

the SmartKeyfromthe ignition, the automatic
transmission shifts to jautomatically.
With the Start/Stopb utton:if youtheno pen
the driver's door or the front-passenge rdoor,
the automatic transmission shifts to jauto-
matically.
If yo uwantthe automatic transmission to
remai ninneutral i,e.g.w henh avingt he vehi-
cle cleane dinanautomatic car wash with a
towing system:
XVehicle switht he Start-Stopb utton:
remove the Start-Stop button fromt he igni-
tio nlock.
XInsert the SmartKeyi nto the ignition lock.
XAllv eh icles: switch the ignition on.
XDepres sthe brake peda land kee pit
depressed.
XEngage neutral i.
XReleasethe brake pedal.
XReleas ethe electri cparking brake.
XSwitch off the ignition and leav ethe SmartKey
in the ignition lock.
Electric parking brake
General notes
GWARNING
If yo uleave children unsupervised in the vehi-
cle ,theyc ould setitinm otion by,for example:
Rrelease the parking brake.
Rshift the automatic transmission ou tofthe
parking position P.
Rstart the engine.
In addition, theym ayoperate vehicl eequip-
ment and become trapped .There is arisko f
an accident and injury.
When leaving the vehicle, always take the
SmartKeyw ithy ou and lock the vehicle. Never
leav echildren unsupervised in the vehicle. The functio
nofthe electric parking brake is
dependent on the on-board voltage. If the on-
boar dvoltag eislowor there is amalfunctio nin
the system, it mayn ot be possibletoapplythe
releasedp arking brake.
XIf thisist he case, onl yparkt he vehicl eon
level ground and secur eittoprevent it rolling
away.
XShift the automatic transmission to position
j.
It mayn ot be possibl etorelease an applied
parking brake if the on-board voltag eislowor
there is amalfunctio ninthe system. Contact a
qualified specialis tworkshop.
The electric parking brake performs afunction
tes tatr egular intervals whil ethe engine is
switched off .The sound sthatc an be he ar
dw hile
th

isiso ccurring ar enormal.
Applyin gorreleasing manually
XTo engage: push handle :.
When the electric parking brake is applied,
the red F(USA only) or !(Canada
only) indicator lamp lights up in the instru-
ment cluster.
Th ee lectric parking brake can also be applied
when the SmartKeyisr emoved.
XTo release:pull handle:.
The red F(USA only) or !(Canada
only) indicator lamp in the instrument cluster
goes out.
Th ee lectric parking brake can onl ybe
released:
Rif the SmartKeyisinp osition 1or2 in
the ignition lock (Ypage 122 )or
Rif the ignition wa sswitched on using the
Start/Stop button
142Parking
Driving an dparking

In addition to driving style, the actual consump-
tion is affected by other factors, such as:
RLoad
RTire pressure
RCold start
RChoice of route
RActive electrical consumers
These factors are not includedint he ECO dis-
play.
An economical driving style specially requires
driving at moderate engine speeds.
Achieving ahigher valu einthe categories
"Acceleration" and "Constant":
Robserve the gearshift recommendations.
Rdrive the vehicle in drive program Cor E
(vehicles with aDYNAMIC SELECT button).
On long journeys at aconstant speed,e .g. on the
highway, only the outer area for "constant" will
change.
The ECO display summarizes the driving style
from the start of the journey to its completion.
Therefore, there are more marked changes in
the outer areasatt he start ofajourney. On lon-
ger journeys, there are fewer changes. For more
marked changes, perform amanua lrest
(
Ypage 181).
For more information on the ECO display, see
(
Ypage 180).
Braking
Important safety notes
GWARNING
If you shift down on aslippery road surface in
an attempt to increase the engine's braking
effect, the drive wheelsc ould lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on aslippery road surface.
Downhill gradients
!On long and steep gradients, you must
reduce the load on the brakes by shifting to a
lowerg ear in good time. This allows you to
take advantage of engine braking. For this you
must first activate manua lgearshifting. This helps you to avoid overheating the brakes and
wearing them out excessively.
When you take advantage of engine braking, it
is possible that
adrive wheel willn ot rotate for
some time, e.g. on aslippery road surface.
This could cause damage to the drive train.
This type of damage is not covered by the
Mercedes-Benz warranty.
Briefly depressing the accelerator pedalo n
downhill gradients whilet he manualdrive pro-
gram Mis temporarilya ctivated: the automatic
transmission may switch to the last active auto-
matic drive program Eor S.T he automatic trans-
missionm ay shift to ahigherg ear. This can
reduce the engine's braking effect.
Heavy and light loads
GWARNING
If you rest you rfoot on the brake pedalw hile
driving, the braking system can overheat. This increases the stopping distance and can even
cause the braking system to fail.T here is a
risk of an accident.
Never use the brake pedalasaf ootrest. Never
depresst he brake pedala nd the accelerator
pedalatt he same time.
!Depressing the brake pedalc onstantly
results in excessive and premature weart o
the brake pads.
If the brakes have been subjected to aheavy
load,don ot stop the vehicle immediately.D rive
on for ashort while. This allows the airflow to
cool the brakes more quickly.
Wet roads
If you have driven for along time in heavy rain
withoutb raking, there may be adelayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depresst he brake pedalmore
firmly.M aintainagreater distance from the
vehicle in front.
After driving on awet road or having the vehicle
washed, brake firmly whilep aying attention to
the traffic conditions. This willw arm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
146Driving tips
Driving and parking