ECO mode MERCEDES-BENZ C-CLASS COUPE 2021 Owners Manual

Mercedes-Benz GenuineParts
+ ENVIRONMENTAL
NOTEEnvironmental
dama gecaused bynot using recycled
re conditioned components Mercedes‑Benz
AGoffers recycled recondi‐
tioned components and pa rts with the same
qu ality as new parts. The same entitlement
from the implied warranty is valid as for new
parts. #
Recycled reconditioned components
and pa rts from Mercedes‑Benz AG.*
NO
TEImpairment of the operating ef fi‐
ciency of there stra int sy stems from
ins talling accessory parts or from repairs
or we lding Airbags and seat belt
tensioners, as well as
control units and sensors forth ere stra int
sy stems, may be ins talled in thefo llowing
areas of your vehicle:
R doors R
door pillars
R door sills
R seats
R cockpit
R instrument clus ter
R centre console
R late ra lro of frame #
Do not ins tall accessory parts such as
audio sy stems in these areas. #
Do not car ryout repairs or welding. #
Have accesso ries retrofitted at a quali‐
fi ed specialist workshop. Yo
u could jeopardise the operating saf ety of your
ve hicle if you use parts, tyres and wheels as well
as accessories releva nt tosaf ety which ha venot
been appr ovedby Mercedes-Benz. Saf ety-re le‐
va nt sy stems, e.g. the brake sy stem, may mal‐
function. Only use Mercedes-Benz GenuineParts
or parts of equal qualit y.Only use tyres, wheels
and accessories that ha vebeen specifically
appr ovedfo ryo ur vehicle model. Mercedes-Benz
tests original parts and con ver‐
sion parts and accessories that ha vebeen spe‐
cifically appr ovedfo ryo ur vehicle model forth eir
re liability, saf ety and suitabilit y.Despite ongoing
ma rket resear ch, Mercedes-Benz is unable to
assess other parts. Mercedes-Benz therefore
accepts no responsibility forth e use of such
parts in Mercedes-Benz vehicles, even if they
ha ve been of ficially appr oved or independently
appr ovedby ate sting centre.
Cer tain parts are only of ficially appr ovedfor
ins tallation or modification if they comply wi th
legal requirements. All Mercedes-Benz Genuine‐
Pa rts meet the appr oval requ irements. The use
of non-appr oved parts may in validate theve hi‐
cle's general operating pe rmit.
This is the case in thefo llowing situations:
R theve hicle type is dif fere nt from that for
which theve hicle's general operating pe rmit
wa s granted.
R other road users could be endangered.
R theex haust gas or noise le velge ts wo rse. 22
General no tes

#
Tension TopTe ther belt 4. In doing so, com‐
ply with thech ild restra int sy stem manufac‐
turer's ins tallation instructions. #
Fold down co ver2 ofTopTe ther anchorage
3. #
If necessar y,slide head restra int 1 down‐
wa rds (/ page100). Ma kesure that you do
not inter fere with the cor rect routing of To p
Te ther belt 4. Securing
thech ild restra int sy stem with the
seat belt Note
s onthe suitability of seats for attach‐
ing belt-secured child restra int sy stems
Re ar seats
We ight category 0: up to10 kg
Left/right rear seat U, L
We ight category 0+: up to13 kg
Left/right rear seat U, L
We ight category I: 9 to18 kg Left/right
rear seat U, L
We ight category II: 15to25 kg
Left/right rear seat U, L
We ight category III: 22 to36 kg
Left/right rear seat U, L
U Suitable forch ild restra int sy stems of the "Univer‐
sal" category in this we ight categor y.
L Suitable for semi-universal child restrai nt sy stems
according totheta ble in "Recommended child
re strai nt sy stems", or if theve hicle and the seat are
lis ted in thech ild restra int sy stem manufacturer's
ve hicle model list. Note
s onchild restra int sy stems on the front
passenger seat
R If it is absolutely necessary foryo uto fit a
ch ild restra int sy stem tothe front passenger
seat, be sure toobser vethe information on
ch ild restra int sy stems on the front
passenger seat (/ page 69). R
Obser vethe specific instructions forthe
re ar wa rd-facing and forw ard-facing child
re stra int sy stems. If the front passenger seat
is occupied, ensure, bo thbefore and during
th e journe y,that thest atus of the front
passenger airbag is cor rect forth e cur rent
situation (/ page 49).
Fr ont passenger seat
We ight category 0: up to10 kg
Fr ont passenger airbag enabled 1
X
Fr ont passenger airbag disabled 1, 2
U, L
We ight category 0+: up to13 kg
Fr ont passenger airbag enabled 1
X
Fr ont passenger airbag disabled 1, 2
U, L
We ight category I: 9 to18 kg
Fr ont passenger airbag enabled 1
UF, L
Fr ont passenger airbag disabled 1, 2
U, L
We ight category II: 15to25 kg Occupant saf
ety65

Fr
ont passenger airbag enabled 1
UF, L
Fr ont passenger airbag disabled 1, 2
U, L
We ight category III: 22 to36 kg
Fr ont passenger airbag enabled 1
UF, L
Fr ont passenger airbag disabled 1, 2
U, L
1 Ad just the seat cushion inclination so that the front
edge of the seat cushion is in the highest position and
th ere ar edge of the seat cushion is in the lo west posi‐
tion.
2 The vehicle is equipped with automatic front
passenger airbag shutoff. The PASSENGER AIR BAG
OFF indicator lamp must be lit.
X Not suitable forch ildren in this we ight categor y.
U Suitable forch ild restra int sy stems of the "Univer‐
sal" category in this we ight categor y. L Suitable
for semi-universal child restra int sy stems
according totheta ble in "Recommended child
re stra int sy stems", or if theve hicle and the seat are
lis ted in thech ild restrai nt sy stem manufacturer's
ve hicle model list.
UF Suitable forfo rw ard-facing child restra int sy stems
of the "Universal" category in this we ight categor y. Securing
thech ild restra int sy stem with the
seat belt on there ar seat &
WARNING Risk of accident if there ar
ben chseat, rear seat and seat backrest
are not engaged
The rear ben chseat, rear seat and seat back‐
re st may fold forw ards, even while theve hi‐
cle is in motion.
R As a result, theve hicle occupant will be
pressed into the seat belt with increased
fo rc e. The seat belt will not be able to
pr otect as intended and could cause
additional injur y. R
Objects or loads in the boot or load com‐
partment cann otbe restra ined bythe
seat backrest. #
Make sure that there ar ben chseat, the
re ar seat and the seat backrest are
engaged before everytrip. If
th e left and right seat backrests are not
engaged and loc ked in place, this will be shown
on the multifunction display on the instrument
clus ter.
If th e cent reseat backrest is not engaged and
loc ked in place, there d lock verification indica‐
to r will be visible.
When fitting a belt-secured child restra int
sy stem, obser vethefo llowing:
O Alw
ays comply with the manufacturer's
ins tallation and operating instructions for
th ech ild restra int sy stem used.
O Fo
r a child restra int sy stem in the "Univer‐
sal" or "Semi-Universal" categor y,make
sure that the sy stem has been appr oved for
th eve hicle seat. 66
Occupant saf ety

Overview of climate control sy
stems Note
s on climate control An interior air
filter in combination with the pre‐
fi lter in the engine compartment must alw ays be
used so that the air conditioning sy stem, pollu‐
tion le vel monitoring and the air filtration work
cor rectl y.Use filters recommended and
appr ovedby Mercedes-Benz. Alw ays ha vemain‐
te nance workcar ried out at a qualified specialist
wo rkshop. Overview of
the air conditioning control
panel The indicator lamps on
the buttons indicate that
th e cor responding function is activated. THERMATIC air conditioning contro
l panel
without stationary heater (e xample)
1 w Setsthete mp erature on the driver's
side
2 _ Setsthe air distribution
3 H Setsthe air flow or switches off climate
control
4 Ã Sets climate control toautomatic
(/ page 136)
5 ¬ Demists the windscreen
6 Vehicles without a stationary heater: A
calls up the air conditioning menu Ve
hicles with a stationary heater: Åcalls
up the air conditioning menu, switches resid‐
ual heat on/off (/ page137)
7 ¤ Switches there ar wind owheater
on/off
8 Vehicles without a stationary heater: 0
swit ches synchronisation on/off
(/ page 136)
Ve hicles with a stationary heater: &
swit ches thest ationary heater on/off
(/ page 139)
9 g Switches air- recirculation mode on/off
(/ page 137)
A ¿ Switches the A/C function on/off
(/ page 136)
B w Setsthete mp erature on the front
passenger side Operating
the clima tecont rol sy stem Switching clima
tecont rol on/off #
Toswitch on: setthe air flow toleve l 1 or
higher using theH button. Climate control
13 5

Switching air-recirculation mode on/off
#
Press theg button.
The interior air will be recirculated.
Air-reci rculation mode automatically swit ches to
fresh air mode af ter some time.
% If air-recirculation mode is switched on, the
windo wsmay mist up more quickl y.Switch
on ai r-re circulation mode only brie fly. Switching
there sidual heat on/off Re
quirements:
R The vehicle is par ked.
It is possible tomake use of there sidual heat
from the engine tocontinue heating or ventilat‐
ing the front compartment of theve hicle for
appr oximately 30 minutes. #
Toswitch on: pressthe! button.
Re sidual heat is switched off automaticall y. Ac
tivating/deactivating ionisation Multimedia sy
stem:
4 Vehicle 5
b Climate control
5 Ionisation
Ionisation cleans and refreshes the interior air of
th eve hicle. Ionisation of the interior air is odour‐
less. #
Activate Oor deacti vate ª the function. Fr
ag rance sy stem Setting
the frag rance sy stem
Re quirements:
R Automatic clima tecontrol is acti vated.
R The glove compa rtment is closed.
Multimedia sy stem:
4 Vehicle 5
b Climate control
5 Air freshener
The fragrance sy stem distributes a pleasant fra‐
grance thro ughout theve hicle interior from a fla‐
con located in theglove box. #
Toset the intensit y:select High,Medium,
Low orOff.
Inserting or removing the flacon ofthe fra‐
gr ance sy stem &
WARNING Risk of inju ryfrom liquid per‐
fume
If ch ildren open theflacon, they could drink
th e liquid perfume or it could come into con‐
ta ct wi th theireyes. #
Do not lea vechildren unat tended in the
ve hicle. #
Consult a doctor immediately if liquid
perfume has been drunk. #
If liquid perfume comes into contact
with your eyes or skin, rinse your eyes
with clean water. #
If sym ptoms continue, consult a doctor. Climate control
137

Driving
Note
s on Mercedes-AMG vehicles Obser
vethe no tes on thefo llowing topics in the
Supplement, otherwise you may failto recognise
dangers.
% The availability of cer tain functions depends
on the equipment and model of theve hicle.
R Emotion Start
R Rear axle locking dif fere ntial
R AMG Performance exhaust sy stem
R AMG ceramic high-per form ance composite
brake sy stem
R Traction control
R RACE START
R AMG RIDE CONTROL
R AMG steering-wheel buttons Switching on
the po wer supp lyor ignition &
WARNING Risk of accident and inju ry
due toleaving children unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could, in pa rticular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf‐
fi c.
R ope rate ve hicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion by,fo rex ample:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. Re
quirements:
R The key is in theve hicle and is recognised.
R The brake pedal is not dep ressed. 14 4
Driving and pa rking

#
Toswitch on the po wer supp ly:press the
1 button once.
Yo u can, forex ample, activate the wind‐
screen wiper.
The po wer supp lyis switched off again if thefo l‐
lowing conditions are me t:
R You open the driver's door.
R You press but ton1 twice more. #
Toswitch on the ignition: pressthe1 but‐
to n twice.
Indicator and warning lamps appear in the
instrument clus ter.
The ignition is switched off again if one of the
fo llowing conditions is me t:
R You do not start theve hicle within
15 minutes and the transmission is in posi‐
tion jorthe electric parking brake is
applied.
R You press but ton1 once. St
arting theve hicle St
arting theve hicle with thest art/s top but‐
ton &
DANG ER Risk of death caused by
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and leads topoisoning. #
Never lea vethe engine or, if present,
th e auxiliary heating running in an
enclosed space wi thout suf ficient venti‐
lation. &
WARNING Risk offire due toflammable
material in the engine compartment or
th eex haust sy stem
Flammable materials may ignite. #
Therefore, check regularly that there
are no flammable materials in the
engine compartment or on theex haust
sy stem. Re
quirements:
R theke y is in theve hicle and is recognised. #
Shift the transmission toposition jori. #
Depress the brake pedal and press button
1 once. #
Ifth eve hicle does not star t:switch off non-
essential consumers and press button 1
once. #
Ifth eve hicle still does not start and the dis‐
play message Place the key in the marked
space See Owner's Manual also appears in
th e multifunction display: start theve hicle
with theke y in the mar ked space (emer gency
operation mode) (/ page 146).
% You can swit choff the engine while driving.
By pressing button 1for about thre e sec‐
onds or bypressing button 1thre e times
within thre e seconds. Be sure toobser vethe
saf ety no tes under "Driving tips"
(/ page 149).
Obse rve any information rega rding display mes‐
sages that can be displa yed in the multifunction
displa y. Driving and pa
rking 14 5

Note
s on driving through water on the road
sur face
Wa ter which has entered into theve hicle can
damage the engine, electrics and transmission.
Wa ter can also enter the air intake of the engine
and cause engine damage.
Obser vethefo llowing if you must drive thro ugh
wate r:
R The wate r,when calm, may only reach the
lo we r edge of theve hicle body.
R Drive at a maximum speed of 10km/h;
wate r can otherwise enter theve hicle interior
or engine compartment.
R Vehicles tr avelling in front, or oncoming vehi‐
cles, can create waves which may exceed the
maximum permissible dep thofthewate r.
The braking ef fect of the brakes is reduced af ter
fo rd ing. Brake carefully while paying attention to
th e tra ffic conditions until braking po wer has
been fully restored. ECO
start/s top function Ope
ration of the ECO start/s top function
% Depending on the engine, the ECO start/
st op function is not available in all drive pro‐
grams. Obse rveth est atus display in the
multifunction display forth is.
The engine is switched off automatically in the
fo llowing situations if all vehicle conditions for
an automatic engine stop are me t:
R You brake theve hicle toast andstill in trans‐
mission position hori.
R Vehicles with a 48 V on-board electrical
sy stem: You depress the brake pedal when
tra velling at a low speed.
If th e sy stem has de tected one of thefo llowing
situations, the engine will not stop:
R Youstop at a stop sign and there is no vehi‐
cle in front of you.
R The vehicle that stopped in front of you
st arts up again.
R You manoeuv re, turn thesteering wheel
sharply or engage reve rsege ar. %
Ifth e sy stem de tects an intelli gent stop
inhibitor, forex ample, a stop sign, the engine
will not stop.
If yo u activate the HOLD function or engage
th e park position j,the engine can be
switched off in spite of an intelligent stop
inhibitor.
The engine is restar ted automatically if:
R You en gage transmission position hork.
R You depress the accelerator pedal.
R An automatic engine start is requiredbythe
ve hicle.
R Youre lease the brake pedal.
R Vehicles with a 48 V on-board electrical
sy stem:
- Youre lease the brake pedal on a downhill
gradient and theve hicle does not roll.
- The vehicle rolls on a downhill gradient
and does not automatically enter glide
mode at 20 km/h. 15 2
Driving and pa rking

ECO
start/ stop function symbols in the multi‐
function display:
R The symbol è(green) appears when the
ve hicle is at a standstill: The engine was
switched off bythe ECO start/ stop function.
R The symbol ç(yellow) appears when the
ve hicle is at a standstill: Not all vehicle condi‐
tions for an engine stop ha vebeen met.
R Neither the symbol ènorç appears
when theve hicle is at a standstill: An intelli‐
ge nt stop inhibitor was de tected, forex am‐
ple, a stop sign.
If th e engine was switched off bythe ECO start/
st op function and you lea vetheve hicle, a warn‐
ing tone sounds and the engine is not restar ted.
In addition, thefo llowing display message
appears in the multifunction display:
Vehicle is operational Switch off ignition before
exiting
If yo u do not swit choff the ignition, it is auto‐
matically switched off af terth re e minutes. Deactivating or activating
the ECO start/
sto p function #
Press button 1.
If indicator la mp2lights up, the ECO start/
st op function is activated.
% Depending on the model and theve hicle
equipment, the button may also be located
at a dif fere nt position in the cent reconsole. ECO displ
ayfunction The ECO display summa
rises your driving char‐
acteristics from thest art of the journey toits
completion and assists you in achieving the
most economical driving style.
Yo u can influence consum ption bydoing thefo l‐
lowing:
R Driving with particular care
R Driving theve hicle in drive program ;
R Observing thege arshift recommendations Driving and pa
rking 15 3

The inner segment will light up and
the outer
segment will fill up when thefo llowing driving
st yle is adop ted:
R 1 Moderate acceleration
R 2 Gentle deceleration and rolling
R 3 Consis tent speed
The inner segment will not light up and the outer
segment will em pty when thefo llowing driving
st yle is adop ted:
R 1 Sporty acceleration
R 2 Heavy braking
R 3 Fluctuations in speed
The ECO display will show you when you ha ve
driven economically:
R The thre e outer segments are comple tely fil‐
led simultaneousl y.
R The ECO display lights up.
The additional range achi eved as a result of your
driving style in comparison with a driver with a
ve ry sporty driving style is shown under Bonusfrom start. The
range displ ayed does not indicate
a fixe dre duction in consum ption. ECO Assist function
ECO Assist anal
yses data forth eve hicle's expec‐
te dro ute. This allo wsthe sy stem tooptimally
adjust the driving style fo rth ero ute ahead, sa ve
fuel and recuperate.
ECO Assi stis displa yed on theAssistance
menu( /page 235). 1
Event ahead
2 Distance displ ayforth eev ent ahead
3 "Foot off the accelerator" prom pt Displ
ayable route events 1
The segments of di stance display 2show the
dis tance totheeve nt ahead as follo ws:
R Afew segments light up: theeve nt ahead is
nea r.
R Many segments light up: theeve nt ahead is
fur ther aw ay.
When theve hicle nears theeve nt, ECO Assi st
will calculate the optimal speed for maximum
fuel economy and recuperati veenergy based on
th e dis tance, speed and gradient. The Foot off
the accelerator 3messa gewill appear on the
multifunction displa y.The firs t segments in front 15 4
Driving and pa rking