warning MERCEDES-BENZ C-CLASS COUPE 2021 Owner's Guide

instructions as
well as theve hicle-specific
information:
- Fitting the ISOFIX or i-Size child restra int
sy stem tothere ar seat (/ page61).
- Securing thech ild restra int sy stem with
th e seat belt on there ar seat
(/ page 66).
- Securing thech ild restra int sy stem with
th e seat belt on the front passenger seat
(/ page 69). Obser vethe specific
instructions forth ere ar wa rd-facing and
fo rw ard-facing child restra int sy stems
(/ page 68).
If th e front passenger seat is occupied,
ensure, bo thbefore and during the jour‐
ne y,that thest atus of the front
passenger airbag is cor rect forth e cur‐
re nt situation (/ page 49).
R Obse rveth ewa rning labels in theve hicle
interior and on thech ild restra int sy stem.
R Also secure TopTe ther if present. Do not modify
thech ild restra int sy stem &
WARNING Risk of inju rydue tomodifi‐
cations tothech ild restra int sy stem
The child restra int sy stem can no longer
function proper ly. This poses an increased
ri sk of injur y. #
Never modify a child restra int sy stem. #
Only af fix accesso ries which ha vebeen
specially appr oved forth is ch ild
re stra int sy stem bythech ild restra int
sy stem's manufacturer. Mercedes‑Benz
recommends Mercedes-Benz
care products for cleaning child restra int sys‐
te ms recommended byMercedes-Benz. Only use
child restra int sy stems which are in
proper working condition &
WARNING Risk of inju ryor death caused
by the use of damaged child restra int
sy stems
Child restra int sy stems or their retaining sys‐
te ms that ha vebeen subjec tedto stre ss in
an accident may not be able toper form their
intended pr otective function.
It may be the case that thech ild cannot be
proper lyrestra ined. #
Alw ays immediately replace child
re stra int sy stems that ha vebeen dam‐
aged or in volved in an accident. #
Have the securing sy stems forth ech ild
re stra int sy stems checked at a qualified
specialist workshop before ins talling a
ch ild restra int sy stem again. Occupant saf
ety55

Av
oid direct sunlight &
WARNING Risk of bu rns when thech ild
seat is exposed todirect sunlight
If th ech ild restra int sy stem is exposed to
direct sunlight or heat, parts could heat up.
Children could suf fer burns from these parts,
particularly on the me tallic parts of thech ild
re stra int sy stem. #
Alw ays make sure that thech ild
re stra int sy stem is not exposed to
direct sunlight. #
Protect thech ild restra int sy stem, e.g.
with a blank et. #
Ifth ech ild restra int sy stem has been
ex posed todirect sunlight, allow it to
cool before secu ring a child in it. #
Never lea vechildren unat tended in the
ve hicle. Obser
vewhen stopping or parking &
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. &
WARNING Dangertolife due toexpo‐
sure toextreme heat or cold in theve hi‐
cle
If people, particularly children, are exposed
to extreme temp eratures over an extended
pe riod of time, there is a risk of serious
injury or danger tolife. #
Never lea vepersons, children in partic‐
ular, unat tended in theve hicle. Overview of
recommended child restra int
sy stems %
Further information on the cor rect child
re stra int sy stem can be obtained at a quali‐
fi ed specialist workshop. Mercedes-Benz
re commends that you use a Mercedes-Benz
Service Centre forth is purpose. 56
Occupant saf ety

Size class –
Equipment
Left/right
rear seat
B1 – ISO/F2X IUF
A – ISO/F3 IUF
IL Suitable for ISOFIX child restra int sy stems according tothe
ta ble in "Overview of there commended child restra int sy stems",
or if theve hicle and the seat are lis ted on thech ild restrai nt sys‐
te m manufacturer's vehicle model list.
IUF Suitable forfo rw ard-facing ISOFIX child restra int sy stems of
th e "Universal" category in this we ight group.
(1) When using a child restrai nt sy stem of size class (ISO/R3),
mo vethe front seat into the highest position. Make sure that the
seat backrest of the front seat does not rest against thech ild
re stra int sy stem. Overview of suitability of
the seats for
attaching i‑Size child restra int sy stems
i‑Size is a standardised securing sy stem for spe‐
cially designed child restra int sy stems.
° The symbol indicates seats suitable for
attaching an i‑Size child restra int sy stem in accordance with UN R129
(/
page 58).
Child restra int sy stems that are permit ted
in accordance with UN R44 as per the
ISOFIX tables (/ page 60) or UN R129 as
per thefo llowing i‑Size tables may be
attached.
i‑Size child restra int sy stems (ISO/R2, ISO/
F2X, ISO/B2, ISO/B3) Fr
ont passenger
seat Left/right
rear seat
Xi ‑U
X Not suitable for an i-Size
ch ild restrai nt sy stem in the
"Universal" categor y.i-U Suitable
forfo rw ard-facing
and rear wa rd-facing i-Size
ch ild restrai nt sy stems in the
"Universal" categor y. Fi
tting an ISOFIX or i‑Size child restra int sys‐
te m on the rear 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 Occupant saf
ety61

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. &
WARNING Risk of inju ryor death if the
permissible gross mass of thech ild and
ch ild restra int sy stem toget her is excee‐
ded.
To o much load may be placed on the ISOFIX
or i‑Size child restra int sy stems and thech ild
may not be restra ined cor rectly in theeve nt
of an accident, forex ample. #
Ifth ech ild and thech ild restra int sys‐
te m toget her weigh more than 33 kg,
only use an ISOFIX or i‑Size child
re stra int sy stem with which thech ild is
secured with theve hicle seat belt. #
Also secure thech ild restra int sy stem
with theTo pTe ther belt, if available. Alw
ays comply with the information about the
mass of thech ild restra int sy stem:
R inthe manufacturer's ins tallation and operat‐
ing instructions forth ech ild restra int sy stem
used
R on a label on thech ild restra int sy stem, if
present
Re gular lych eck that the permissible gross mass
of thech ild and child restra int sy stem is still
complied with.
When fitting a child restra int sy stem, obser ve
th efo llowing:
O Alw
ays obser vethe cor rect use of the seats
and consider their suitability for attaching a
ch ild restra int sy stem.
ISOFIX child seat securing sy stem
(/ page 60)
or
i‑Size child seat securing sy stem
(/ page 61 ) O
Alw
ays comply with the manufacturer's
ins tallation and operating instructions for
th ech ild restra int sy stem used.
O Make sure
that thech ild's feet do not touch
th e front seat. If necessar y,mo vethe front
seat slightly forw ards.
® When fitting an ISOFIX child restra int sys‐
te m, also obser vethefo llowing:
O When using a baby car seat in
weight
gr oup 0/0+ and a rear wa rd-facing child
re stra int sy stem in weight group 1 on a
re ar seat: adjustthe front seat so that the
seat does not touch thech ild restra int sys‐
te m.
O When using a
forw ard-facing child
re stra int sy stem in weight group 1:
re mo vethe head restra int from there spec‐
tive seat, if possible. In addition, the back‐
re st of thech ild restra int sy stem must lie as
fl at as possible against the backrest of the
ve hicle seat. 62
Occupant saf ety

Securing
TopTe ther &
WARNING Risk of inju ryor death if the
re ar seat backrests are not loc ked af ter
To pTe ther belts are fitted
The rear seat backrests may fold forw ards
when you are driving.
As a result, child restra int sy stems will no
longer be able toper form their intended pro‐
te ctive function. This may also cause addi‐
tional inju ries. #
Alw ays lock rear seat backrests af ter
fi tting TopTe ther belts. #
Obser vethe lock verification indicator. 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.
¯ Ifth ech ild restra int sy stem is equipped
with a TopTe ther belt: The
risk of injury may be reduced byTo p
Te ther. The TopTe ther belt enables an
additional connection between thech ild
re stra int sy stem attached with ISOFIX or
i‑Size and theve hicle. #
If necessar y,slide head restra int 1 upwards
(/ page 100). #
Fold up co ver2 ofTopTe ther anchorage
3. #
Fitthe ISOFIX or i‑Size child restra int sy stem
with TopTe ther. In doing so, comply with the
ch ild restra int sy stem manufacturer's ins tal‐
lation instructions. #
Guide TopTe ther belt 4under head
re stra int 1 between the two head restra int
bars. #
Hook TopTe ther hook 5ofTopTe ther belt
4 into TopTe ther anchorage 3without
twisting. 64
Occupant saf ety

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

Ve
hicles without automatic front passenger air‐
bag shutoff ha vea special sticke r af fixe dto the
side of the cockpit on the front passenger side.
Make sure you obse rveth efo llowing informa‐
tion:
R Neverfit a rear wa rd-facing child restra int
sy stem tothe front passenger seat
R Alw aysfit a rear wa rd-facing child restra int
sy stem toa suitable rear seat
- Suitability of seats for attaching belt-
secured child restra int sy stems
(/ page 65)
- Secure thech ild restra int sy stem with the
seat belt on there ar seat (/ page 66).
R Notes on rear wa rd-facing and forw ard-facing
ch ild restra int sy stems on the front
passenger seat (/ page 68) Note
s onrear wa rd-facing and forw ard-facing
ch ild restra int sy stems on the front
passenger seat &
WARNING Risk of inju ryor death when
using a rear wa rd-facing child restra int
sy stem while the front passenger airbag
is enabled
If yo u secure a child in a rear wa rd-facing
ch ild restra int sy stem on the front passenger
seat and thePA SSENGER AIR BAG OFF indi‐
cator lamp is off, the front passenger airbag
can deploy in theev ent of an accident.
The child could be stru ck bythe airbag.
Alw ays ensure that the front passenger air‐
bag is disabled. The PASSENGER AIR BAG
OFF indicator lamp must be lit.
NEVER use a rear wa rd-facing child restra int
sy stem on a seat with an ENABLED FRONT
AIRB AG. This can result in the DEAT H of or
SERIOUS INJU RYtotheCH ILD. Obser
vethe specific instructions forth ere ar‐
wa rd-facing and forw ard-facing child restra int
sy stems (/ page 69). Wa
rning notice on the front passenger sun visor
Alw ays obser vethest atus of the front passenger
airbag on thePA SSENGER AIR BAG OFF indica‐
to r lamp:
R If it is absolutely necessary tofit a child
re stra int sy stem tothe front passenger seat,
alw ays obser vethe information on automatic
front passenger airbag shutoff (/ page47).
R When using a rear wa rd-f acing child restra int
sy stem on the front passenger seat, the front 68
Occupant saf ety

#
Installth ech ild restra int sy stem.
The entire base of thech ild restra int sy stem
must alw aysre st on the sitting sur face of the
front passenger seat. #
Alw ays make sure that the shoulder belt
st ra p is cor rectly routed from the seat belt
outlet of theve hicle tothe shoulder belt
guide on thech ild restra int sy stem.
The shoulder belt stra p must be routed for‐
wa rds and down wards from the seat belt out‐
let. #
If necessar y,adjust the seat belt outlet and
th e front passenger seat according ly.Note
s on pets in theve hicle &
WARNING Risk of accident and inju ry
due toanimals left unsecured or unat‐
te nded in theve hicle
If yo u lea veanimals in theve hicle unatten‐
ded or unsecured, they could press buttons
or switches, for ins tance. An animal may:
R acti vate ve hicle equipment and become
trapped, forex ample
R swit chsystems on or off and endanger
ot her road users
Un secured animals may be throw n about the
ve hicle in theev ent of an accident, or sudden
st eering and braking manoeuvres, and injure
ve hicle occupants. #
Never lea veanimals unat tended in the
ve hicle. #
Alw ays cor rectly secu reanimals while
driving, e.g. using a suitable animal car‐
ri er. 70
Occupant saf ety

Key
Fu
nction overview &
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. *
NO
TEDama getotheke y caused by
magnetic fields #
Keep theke yaw ay from strong mag‐
netic fields. Ve
hicle key
1 Locks
2 Indicator lamp 3
Unloc ks
4 Opens/closes the boot lid
% If indicator lamp 2does not light up af ter
pressing theÜ orß button, the bat‐
te ry iswe ak or possibly dischar ged. Re place
th e battery as soon as possible.
Re place theke y bat tery ( / page 73).
The key loc ksand unlo cksth efo llowing compo‐
nents:
R doors
R fuel filler flap
R boot lid
If th eve hicle is not opened within appr oximately
40 seconds af ter unlocking, it loc ksagain. Anti-
th eft pr otection is primed again.
Do not keep theke yto get her with electronic
devices or me tal objects. This can af fect the
ke y's functionalit y. Opening and closing
71

&
WARNING Risk of inju ryto persons
inside theve hicle when the additional
door lock is activated
If th e additional door lock is activated, the
doors can no longer be opened from the
inside. #
Never lea vepersons, in particular chil‐
dren, unat tended in theve hicle. #
Ifth ere are persons in theve hicle, do
not activate the additional door loc k.The additional door lock is automatically activa‐
te d in thefo llowing situations:
R The vehicle is loc ked using thekey.
R The vehicle is loc ked using KEYLESS-GO.
If th eve hicle has been loc ked via Mercedes me
connect, the additional door lock is not activa‐
te d.
If th e additional door lock is activated, the doors
cann otbe opened from the inside.
% After locking you can issue a signal with the
horn. Yo
u can pr eventthe additional door lock from
being activated bydeactivating interior pr otec‐
tion before locking theve hicle (/ page 93). Un
locking/opening the doors from the inside #
United Kingdom onl y:obser vethe no tes on
th e additional door lock (/ page74). #
Pull door handle 2.
Locking pin 1pops up when the door is
unloc ked. Centrally locking and unlocking
theve hicle
from the inside #
Tounlo ck:press button 1. #
Tolock: press button 2. Opening and closing
75