snow chains MERCEDES-BENZ E-CLASS CABRIOLET 2021 Owners Manual

Climat
Climat
e contr
e contr ol
ol...........................................1 42
142
Overview of climate control systems ............ 142
Operating the climate control system .......... 143 Dr
Dr
iving and par
iving and par king
king..................................... 153 153
Driving ........................................................1 53
DY NAMIC SELECT switch ........................... .165
Au tomatic transmission .............................. .167
Fu nction of the 4MATIC ...............................1 71
Re fuelling .................................................... 171
Pa rking .......................................................1 77
Driving and driving saf ety sy stems ............... 183
Tr ailer hitch ................................................ .239
Bicycle rack function ................................... 244
Ve hicle towing instructions .......................... 245 Ins
Ins
tr
trument displa
ument displa y and on-boar
y and on-boar d com-
d com-
put
put er
er........................................................... 247 247
No tes on the inst rument display and on-
board computer .......................................... 247
Overview of instrument display .................... 248
Overview of buttons on the steering wheel ... 249
Operating the on-board computer ................2 49Overview of displa
yson the inst rument
display ........................................................ 251
Head-up display .......................................... 251 MBUX multimedia syst MBUX multimedia syst
em
em........................... .254
254
Overview and operation ............................... 254
System settings .......................................... 262
Na vigation .................................................. .266
Te lephone ................................................... 274
Mercedes me app ....................................... 277
Mercedes-Benz emer gency call system ....... 286
Ra dio, media & TV....................................... 290
Sound settings ............................................ 296 Maint Maint
enance and car
enance and car e
e................................. 298 298
ASS YST PLUS service inter val display .......... 298
Engine compartment ................................... 299
Cleaning and care ....................................... 305 Br Br
eakdo
eakdo wn assist
wn assist ance
ance................................. 315 315
Emer gency .................................................. 315
Flat tyre ...................................................... 317
Battery (vehicle) .......................................... 322 To
w- starting or towing away ........................ 328
Electrical fuses ............................................ 332 Wheels and tyr Wheels and tyr
es
es........................................ .336
336
No tes on noise or unusual handling char-
acteristics ................................................... 336
No tes on regula rly inspecting wheels and
tyres .......................................................... .336
No tes on snow chains ................................. 336
Ty re pressure .............................................. 337
Wheel change ............................................. 341
Emer gency spa rewheel .............................. .351 T T
ec
ec hnical dat
hnical dat a
a............................................. 353 353
No tes on tech nical data .............................. 353
On-board electronics ................................... 353
Re gula tory radio identi/cation and no tes ..... 355
Ve hicle identi/cation plate, VIN and
engine number overview .............................. 356
Operating 0uids ...........................................3 58
Ve hicle data ................................................ 367
Tr ailer hitch ................................................ .368 Contents
3 3

R
Temp erature
R Height
R Speed
R Operating status of the engine
R Tra1c situation F
F
unction of t
unction of t he 4MA
he 4MATIC
TIC
4MATIC ensu resth at all four wheels are driven.
To ge ther with ESP ®
and 4ETS, 4MATIC impr oves
th e traction of your vehicle whene ver a driven
wheel spins due toinsu1cient traction.
If yo ufa ilto adapt your driving style, 4MATIC can
neither reduce therisk of an accident nor override
th e la wsof ph ysics. 4MATIC cannot take account
of road, weather and tra1c conditions. 4MATIC is
only an aid. You are responsible especially for
maintaining a safe distance from theve hicle in
front, forve hicle speed, for braking in good time
and for st aying in lane.
% In wintry road conditions, the maximum e.ect
of 4MATIC can be achie ved only if you use
winter tyres (M+S tyres), with snow chains if
necessar y. R
R
efuelling
efuelling R
R
efuelling t
efuelling t he v
he vehicle
ehicle &
W
WARNING
ARNING Risk of /re or explosion from
fuel
Fu els are highly 0ammable. #
Fire , naked 0ames, smoking and creating
spar ksmust be avoided. #
Before refuelling, switch o. theve hicle
and, if /tted, the stationary heater and
ke ep switched o. during /lling. &
W
WARNING
ARNING Risk of injury from fuels
Fu els are poisonous and hazardous toyour
health. #
Do not swallow fuel or let it come into
contact with skin, eyes or clo thing. #
Do not inhale fuel vapour. #
Keep children away from fuel. #
Keep doors and windo wsclosed during
th ere fuelling process. If
yo u or other people come into contact with
fuel, obser vethefo llowing: #
Immediate lyrinse fuel o. your skin with
soap and water. #
If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical at tention
immedia tely. #
Ifyo u swallow fuel, seek medical atten-
tion immediatel y.Do not induce vomit-
ing. #
Change immediately out of clo thing that
has come into contact with fuel. &
W WARNING
ARNING Risk of /re and explosion due
to electrostatic charge
Electrostatic charge can ignite fuel vapour. #
Before you open the fuel /ller cap or
ta ke hold of the pump nozzle, touch the
me tallic vehicle body. Driving and parking
171
171

Deactivate ESP
®
in thefo llowing situations to
impr ovetraction:
R When using snow chains.
R In deep sno w.
R On sand or grave l.
% Spinning the wheels results in a cutting
action, which enhances traction.
If th e÷ ESP®
wa rning lamp lights up continu-
ousl y,ESP ®
is not available due toa malfunction.
Obser vethefo llowing information:
R Warning and indicator lamps (/ page 429)
R Display message s (/page 371)
ET
ET S/4ET
S/4ET S (Electr
S (Electr onicTr
onic Traction Syst
action Syst em)
em)
ETS/4ETS traction cont rol is part of ESP ®
and
makes it possible topull away and accelerate on a
slippery car riag ewa y.
ETS/4ETS can impr ovetheve hicle's traction by
inter vening in thefo llowing ways:
R The drive wheels are braked individually if they
spin. R
More drive torque is tr ansferredto the wheel
or wheels with traction.
In0uence
In0uence of dr
of driv
ive pr
e pr ogr
ograms on ESP
ams on ESP ®
®
The drive prog rams enable ESP ®
to adapt todif-
fe re nt we ather and road conditions as well as the
driver's prefer red driving style. Depending on the
selected drive prog ram, the appropriate ESP ®
mode will be activated. You can select the drive
prog rams using theDY NAMIC SELECT switch
(/ page 166). F
F
unction of ESP
unction of ESP ®
®
Cr
Cr osswind Assist
osswind Assist ESP
®
Crosswind Assist de tects sudden gusts of
side wind and helps the driver tokeep theve hicle
in the lane:
R ESP ®
Crosswind Assist is active at vehicle
speeds between appr ox. 75 km/h and
200 km/h when driving straight ahead or cor-
nering slightl y.
R The vehicle is stabilised bymeans of individual
brake application on one side. F F
unction of ESP
unction of ESP ®
®
tr
trailer st
ailer st abilisation
abilisation &
W
WARNING
ARNING Risk of accident in poor road
and weather conditions
In poor road and weather conditions, the
trailer stabilisation cannot pr event lur ching of
th eve hicle/trailer combination. Trailers with a
high cent reofgrav ity may tip over before
ESP ®
de tects this. #
Always adapt your driving style tosuit
th e cur rent road and weather conditions. When driving with a trailer, ESP
®
can stabilise
yo ur vehicle if the trailer begins toswer vefrom
side toside:
R ESP ®
trailer stabilisation is active abo ve
speeds of 65 km/h.
R Slight swerving is reduced bymeans of a tar-
ge ted, individual brake application on one
side.
R Intheev ent of se vere swerving, the engine
output is also reduced and all wheels are
braked. Driving and parking
187
187

When
Active Parking Assist is activated, the turn
signal indicators are activated based on the calcu-
lated path of your vehicle.
The parking procedu reis assisted byaccelerating,
braking, steering and gear changes.
Ac tive Parking Assist is only an aid. It is not a sub-
stitute foryo ur attention tothe sur roundings. The
re sponsibility for safe manoeuvring and parking
re mains with you. Make sure that no persons, ani-
mals or objects etc. are in the manoeuvring
ra nge.
Ac tive Parking Assist will be cancelled in thefo l-
lowing situations:
R Parking Assist PARKTRONIC is deactivated.
R You begin steering.
R You engage transmission position j.
R ESP ®
inter venes.
R You open the driver's door.
R ATer activating Active Parking Assist, you
press thec button again (/ page 233).Syst Syst
em limits em limits
If th eex terior lighting is malfunctioning, Active
Pa rking Assist is not available.
Objects located abo veor below the de tection
ra nge of the sensors, e.g. overhanging loads,
ove rhangs or loading ramp s of goods vehicles, or
th e borders of parking spaces, are not de tected
during measurement of the parking space. These
are also then not take n into account when calcu-
lating the parking procedure. In some circumstan-
ces, Active Parking Assist may therefore guide
yo u into the parking space incor rectl y. &
W
WARNI NG
ARNI NGRisk of accident due toobjects
located abo veor below the de tection
ra nge of Active Parking Assist
If th ere are objects abo veor below the de tec-
tion range, thefo llowing situations may arise:
R Active Parking Assist may steer too ear ly.
R The vehicle may not stop in front of these
objects.
There is a danger of collision! #
Inthese situations, do not use Active
Pa rking Assist. Extreme
weather conditions, such as snow or
heavy rain, may lead toa parking space being
measured inaccuratel y.Pa rking spaces that are
partial lyoccupied bytrailer dr awbars might not be
identi/ed as such or be measured incor rectl y.
Only use Active Parking Assist on le vel, high-g rip
gr ound.
Do not use Active Parking Assist in thefo llowing
situations:
R Inextreme weather conditions such as ice,
pac ked snow or in heavy rain.
R When transporting a load that pr otru des
be yond theve hicle.
R On steep uphill or downhill gradients of more
th an appr oximately 15%.
R When snow chains are /tted.
R When a trailer or bicycle rack is attached.
R Directly aTer a tyre change or when spare
tyres are /tted.
R Ifth e tyre pressure is too low or too high. 232
232
Driving and parking

N
N
o
ot
tes on noise or unusual handling c
es on noise or unusual handling c har
har act
acter
eris-
is-
tics
tics
Make sure there are no vibrations, noises or
unusual handling characteristics when theve hicle
is in motion. This may indicate that the wheels or
tyres are damaged. Hidden tyre damage could
also be causing the unusual handling characteris-
tics.
If yo u suspect that a tyre is defecti ve,re duce your
speed immediately and ha vethe tyres and wheels
ch ecked at a quali/ed specialist workshop. N No
ot
tes on r
es on r egularl
egularly inspecting wheels and tyr
y inspecting wheels and tyr es
es&
W
WARNING
ARNING Risk of injury due todamaged
tyres
Damaged tyres can cause tyre pressure loss. #
Check the tyres regula rly fo r signs of
damage and replace any damaged tyres
immediatel y. &
W
WARNI NG
ARNI NGRisk of aquaplaning due to
insu1cient tyre tread
Insu1cient tyre tread will result in reduced
tyre grip.
The risk of aquaplaning is increased on wet
ro ads, especially when the speed of theve hi-
cle is not adap tedto suit the conditions. #
Thus, you should regula rly ch eck the
tread dep thand the condition of the
tread across the entire width of all tyres.
Minimum tread dep thfor:
R Summer ty res: 3 mm
R M+S tyres: 4 mm #
For saf etyre asons, replace the tyres
before the legall y-prescribed limit forthe
minimum tread dep thisreached. Car
ryout thefo llowing checks on all wheels regu-
lar ly, at least once a month or as required, for
ex ample, prior toa long jou rney or driving o.-
ro ad:
R Check the tyre pressure (/ page 337). R
Visually inspect wheels and tyres for damage.
R Check theva lve caps.
R Visual check of the tyre tread dep thand the
tyre contact sur face across the entire width.
The minimum tread dep thfor summer tyres is
3 mm and for winter tyres 4 mm. N
No
ot
tes on sno
es on sno w c
w chains
hains &
W
WARNING
ARNING Risk of accident due toincor-
re ctly /tted snow chains
If yo u ha ve/tted snow chains tothe front
wheels, they may drag against theve hicle
body or chassis components. #
Never /t snow chains tothe front
wheels. #
Only /t snow chains on there ar wheels
in pairs. 336
336
Wheels and tyres

*
N
N O
OTE
TE Damage tocomponents of theve hi-
cle body or chassis due to/tted snow
ch ains If
yo u /t snow chains tothe front wheels of
4MATIC vehicles, you may damage compo-
nents of theve hicle body or chassis. #
Only /t snow chains tothere ar wheels
of 4MATIC vehicles. Obser
vethefo llowing no tes when using snow
ch ains:
R Snow chains are only permissible for cer tain
wheel/tyre combinations. You can obtain
information about this from a Mercedes-Benz
Service Centre.
R For saf etyre asons, only use snow chains that
ha ve been speci/cally appr oved foryo ur vehi-
cle byMercedes-Benz, or snow chains with
th e same quality standard.
R If snow chains are /tted, the maximum per-
missible speed is 50 km/h. R
V
V ehicles wit
ehicles wit h A
h Activ
ctiv e P
e Par
arking Assist
king Assist: :do not use
Ac tive Parking Assist when snow chains are
/tted.
R V
Vehicles wit
ehicles wit h lev
h level contr
el contr ol:
ol:if snow chains are
/tted, only drive at raised vehicle le vel
( / page 218).
% You can permanently limit the maximum
speed for driving with winter tyres
(/ page 195).
% You can deactivate ESP ®
to pull away
( / page 188). This allo ws the wheels tospin,
achieving an increased driving forc e. T
T
yr
yr e pr
e pr essure
essure N
No
ot
tes on tyr
es on tyr e pr
e pressure
essure &
W
WARNING
ARNING Risk of accident due toinsu1-
cient or excessive tyre pressure
Un derin0a tedorove rin0ated ty res pose in par-
ticular thefo llowing risks:
R The tyres can burst. R
The tyres can wearexcessively and/or
une venly.
R The driving characteristics as well as the
stee ring and braking characteristics may
be greatly impaired. #
Comply with there commended tyre
pressure and check the tyre pressure of
all tyres, including the spare wheel, regu-
lar ly:
R monthly
R when the load changes
R before embarking on a lon ger journey
R if operating conditions change, e.g. o.-
ro ad driving #
Adjust the tyre pressure, if necessar y. Ty
re pressure which is too high or too low can:
R Shor tenth e service life of the tyres.
R Cause increased tyre damage.
R Adve rsely a.ect driving characteristics and
th us driving saf ety, e.g. due toaquaplaning. Wheels and tyres
337
337

%
The values displa yed in the on-board com-
puter may deviate from those of the tyre pres-
sure gauge as they referto sea le vel.At high
ele vations, the tyre pressure values indicated
by a pressure gauge are higher than those
shown bythe on-board computer. In this case,
do not reduce the tyre pressure.
R
R est
est ar
arting t
ting t he tyr
he tyr e pr
e pressur
essur e monit
e monit or
oring syst
ing syst em
em
R
R eq
eq uir
uir ements:
ements:
R The recommended tyre pressure is cor rectly
set forth ere specti veoperating status on all of
th e wheels (/ page 337).
Re start the tyre pressure monitoring system in the
fo llowing situations:
R The tyre pressure has changed.
R The wheels or tyres ha vebeen changed or
ne wly /tted. On-board computer:
4 Service 5
Tyres #
Swipe down wards on Touch Control on the
leT-hand side of the steering wheel.
The Use current pressures as new reference
values? message is shown in the Instrument
Displa y. #
Torestart, press Touch Control on the leT-
hand side of the steering wheel.
The Tyre press. monitor restarted message is
shown in the Instrument Displa y.
Cur rent wa rning message s are deleted and
th eye llow h warning lamp goes out.
ATer you ha vebeen driving for a few minutes,
th e system checks whe ther the cur rent tyre
pressures are within the speci/ed range. The
cur rent tyre pressures are then accep ted as
re fere nce values and monitored.
Be sure toalso pay attention tothefo llowing rela-
te dto pic:
R Notes on tyre pressure (/ page 337) T
T
yr
yr e pr
e pr essur
essur e loss w
e loss w ar
arning syst
ning syst em
em F
F
unction of t
unction of t he tyr
he tyre pr
e pressur
essur e loss w
e loss w ar
arning syst
ning syst em
em
The tyre pressure loss warning system warnsthe
driver bymeans of display messages when there
is a se vere tyre pressure loss.
Syst
Syst em limits
em limits
The system may be impaired or may not function
particula rly in thefo llowing situations:
R incor rect refere nce values were ta ught in
R sudden pressure loss caused byafo re ign
object penetrating the tyre, forex ample
R aneven pressure loss on more than one tyre
occurs
The system has a restric ted or dela yed function
particular lyin thefo llowing situations:
R poor ground conditions, e.g. snow or grav el
R driving with snow chains
R when adopting a very sporty driving st yle with
high cornering speeds or sudden acceleration
R driving with a very heavy or lar getrailer
R driving with a high load 340
340
Wheels and tyres

&
W
W ARNI NG
ARNI NGRisk of accident due toincor-
re ct tightening torque
The wheels could come loose if the wheel
bolts or wheel nuts are not tightened tothe
prescribed torque. #
Ensure that the wheel bolts or wheel
nuts are tightened tothe prescribed
tightening torque. #
Ifyo u are not sure, do not mo vetheve hi-
cle. Con tact a quali/ed specialist work-
shop and ha vethe tightening torque
ch ecked immediatel y. #
Check the tyre pressure of the ne wly/tted
wheel and adjust it if necessar y.
% The following does not apply if the new wheel
is an emer gency spa rewheel. #
V
Vehicles wit
ehicles wit h tyr
h tyre pr
e pressur
essur e loss w
e loss w ar
ar ning sy
ning sy s-
s-
t
t em:
em: restart the tyre pressure loss warning
system (/ page 341). #
V
Vehicles wit
ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: restart the tyre pressure monitoring sys-
te m (/ page 340). Emerg
Emerg
ency spar
ency spar e wheel
e wheel N
No
ot
tes on t
es on t he emerg
he emerg ency spar
ency spar e wheel
e wheel &
W
WARNING
ARNING Risk of accident caused by
incor rect wheel and tyre dimensions
The wheel or tyre size and the tyre type of the
emer gency spa rewheel or spare wheel and
th e wheel tobe replaced may di.er. The emer-
ge ncy spa rewheel or spare wheel can signi/-
cantly impair driving characteristics of the
ve hicle.
To prev ent hazardous situations: #
Drive carefull y. #
Never /t more than one emer gency
spa rewheel or spare wheel that di.ers
in size. #
Only use an emer gency spa rewheel or
spare wheel brie0y. #
Do not deacti vate ESP ®
. #
Have the emer gency spa rewheel or
spare wheel of a di.erent size replaced
at the nearest quali/ed specialist work- shop. The new wheel must ha
vethe cor-
re ct dimensions. %
The emer gency spa rewheel is secured in the
emer gency spa rewheel bag in the boot.
Obser vethefo llowing no tes on /tting an emer-
ge ncy spa rewheel:
R The maximum permissible speed with an
emer gency spa rewheel /tted is 80 km/h.
R Do not /t the emer gency spa rewheel with
snow chains.
R Replace the emer gency spa rewheel aTer six
ye ars at the latest, rega rdless of wear.
R Check the tyre pressure of the emer gency
spa rewheel /tted. Cor rect the pressure as
necessar y.
% The speci/ed tyre pressure is stated on the
label of the emer gency spa rewheel. Wheels and tyres
351 351

Re
starting the tyre pressure monitor-
ing system............................................. 340
TIREFIT kit..............................................3 19
Ty re pressure loss warning system
(function)............................................... 340
Ty re pressure monitoring system
(function)............................................... 339
Ty re pressure table................................ .338
T
T yr
yr e pr
e pr essur
essur e loss w
e loss w ar
arning syst
ning syst em
em
Fu nction................................................ 340
Re starting.............................................. 341
T
T yr
yr e pr
e pr essur
essur e monit
e monit or
oring sy st
ing syst em
em
Checking the tyre pressures................... 339
Checking the tyre temp eratur e............... 339
Fu nction................................................ 339
Re starting.............................................. 340
T
T yr
yr e pr
e pr essur
essur e t
e table
able ...................................... .338
T
T yr
yr e t
e t em
em per
per ature
ature
Checking (tyre pressure monitoring
system)..................................................3 39
Ty re pressure monitoring system
(function)............................................... 339
T T yr
yr e tr
e tr ead
ead.................................................... 336 T
T
yr
yr e-c
e-c hang
hang e t
e tool kit
ool kit
Overview................................................ 345
T
T yr
yr es
es
Checking............................................... 336
Checking the tyre pressure (tyre pres-
sure monitoring system)......................... 339
Fi tting.................................................... 349
Flat tyre................................................. 317
Inter changing......................................... 344
MOExtended tyres................................. 317
Noise..................................................... 336
No tes on /tting...................................... 341
Re moving............................................... 349
Re placing...................................... .341, 346
Re placing the wheel trim........................ 346
Re starting the tyre pressure loss
wa rning system...................................... 341
Re starting the tyre pressure monitor-
ing system............................................. 340
Selection...............................................3 41
Snow chains.......................................... 336
St oring................................................... 345
TIREFIT kit.............................................. 319
Ty re pressure (No tes)............................. 337 Ty
re pressure loss warning system
(function)............................................... 340
Ty re pressure monitoring system
(function)............................................... 339
Ty re pressure table................................ .338
Unusual handling characteristics............ 336 U U
U
Unloc nloc king
king
see Locking/unlocking
U
Updat pdat es
es
Impor tant system updates...................... 262
USB port
USB port Front st owage compartmen t.................. 117
Re ar....................................................... 121 V
V
V
V ehicle
ehicle
Activating/deactivating standby mode... 183
Ad ditional door loc k................................. 77
Cor rect use............................................. .33
Data acquisition....................................... 35
Data storag e............................................ 35
Diagnostics connection............................ 31 474
474
Index

Checking
the tyre pressure (tyre pres-
sure monitoring system)......................... 339
Fi tting.................................................... 349
Flat tyre................................................. 317
Inter changing......................................... 344
MOExtended tyres................................. 317
Noise..................................................... 336
No tes on /tting...................................... 341
Re moving............................................... 349
Re placing...................................... .341, 346
Re placing the hub cap............................ 346
Re starting the tyre pressure loss
wa rning system...................................... 341
Re starting the tyre pressure monitor-
ing system............................................. 340
Selection...............................................3 41
Snow chains.......................................... 336
St oring................................................... 345
TIREFIT kit.............................................. 319
Ty re pressure (No tes)............................. 337
Ty re pressure loss warning system
(function)............................................... 340
Ty re pressure monitoring system
(function)............................................... 339
Ty re pressure table................................ .338
Unusual handling characteristics............ 336 W
W i-Fi i-Fi
Setting................................................... 263
W
W ind
ind de0ect
de0ect or
or
Care..................................................... .309
W
W indo
indo w
wliTer
liTer
see Side windo ws
W
W indo ws
indo ws
Care...................................................... 311
Opening/closing (all)...............................91
W W indo ws
indo ws
see Side wind ows
W
W indscr
indscr een
een
Demisting.............................................. 142
Re placing the wiper blades.....................1 35
Re placing the wiper blades (MAGIC
VISION CONTROL)................................ .137
W
W indscr indscr een
een
see Windsc reen
W
W indscr
indscr een w
een washer
asher 0uid
0uid
No tes..................................................... 366
W
W indscr
indscr een w
een washer syst
asher syst em
em
To pping up............................................ .304 W
W
indscr
indscr een wipers
een wipers
Ac tivating/deactivating.......................... 134
Re placing the wiper blades.....................1 35
Re placing the wiper blades (MAGIC
VISION CONTROL)................................ .137
W
W int
int er oper
er oper ation
ation
Snow chains.......................................... 336
W W int int er tyr
er tyr es
es
Setting the permanent speed limit..........1 95
W
W iper blades
iper blades
Care...................................................... 311
Re placing (MAGIC VISION CONTROL).... .137
Re placing (windscreen).......................... 135
W
W ir
ireless c
eless c har
harging
ging
Fu nction/no tes...................................... 121
Mobile phone......................................... 123
W
W ir
ireless v
eless v ehicle com
ehicle com ponents
ponents
Declaration of conformity........................ .24
Speci/c absor ption rate........................... 24
W
W ork
ork out pr
out pr ogr
ogram
am
Overview................................................ 106
W
W ork
ork shop
shop
see Quali/ed specialist workshop Index
477
477