2021 MERCEDES-BENZ CLA COUPE cooling

The time
take nto charge the battery depends on
th ech arge status of the batter y,the ambient tem-
perature and thech arging capacity of the batter y.
The charging capacit y,in turn, depends on the
supply voltage, the cur rent intensity and the type
of po wer suppl y.
The nominal voltage range foryo ur vehicle can be
fo und on the information label in the soc ket 0ap
(/ page 188). T
T
r
railer hitch
ailer hitch Gener
Gener
al not
al notes on t
es on t he tr
he trailer hitch
ailer hitch Modi/cations
tothe engine cooling system may
be necessar y,depending on theve hicle model.
The retro/tting of a trailer hitch is on lypermissi-
ble if a towing capacity is speci/ed in your vehicle
documents.
Fu rther information can be obtained at a quali/ed
specialist workshop. Mounting dimensions of t Mounting dimensions of t
he tr
he trailer hitch
ailer hitch 1
Fastening points
2 Overhang dimension
3 Rear axle cent reline The
overhang dimension and fastening points are
va lid for a trailer hitch installed at thefa ctor y.
Ov Ov er erhang dimension leng th
hang dimension length Model Model
2 2Ov
Over
erhang dimension
hang dimension
All model s1 153 mm T
T
o
o wing capacity
wing capacity %
The tongue weight is not included in theto w-
ing capacity.
The values forth e trtrailer load, br ailer load, br ak
aked
ed apply
with a minimum start-o. gradeability of 12%.
No
No t f
t for plug-in h
or plug-in h ybr
ybrid:
id: Te
ch nical data
399
399

Engine
Engine
Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
To switch off the engine,
press the Start/Stop but-
ton for at least 3 seconds
or 3 times. *Y
ou ha vepressed the start/s top button while theve hicle is in motion. #
Information about switching o. theve hicle while driving (/ page 160).
Cannot start engine See
Owner's Manual *T
hevehicle cann otbe star ted. #
Switch theve hicle o. and switch it back on #
Ifth e display message still appears, consult a quali/ed specialist workshop.
+
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N NO
OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 333). #
Have the engine cooling system checked at a quali/ed specialist workshop. 428
428
Displ
aymessages and warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ÿ
Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. &
W WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ *T
here is a malfunction in the engine cooling system. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C. Display messages and
warning/indicator lamps
429
429

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ
Coolant warning lamp (yel-
low) *T
he yellow coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The charge air, transmission oil or battery cooling is faulty
R The radiator shutters are bloc ked or defective #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop.
; Engine diagnosis warning
lamp *T
he yellow engine diagnostics warning lamp is lit while the engine is running.
A malfunction has occur red in the engine, theex haust system or the fuel system.
The emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a quali/ed specialist workshop.
V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: the fuel tank may ha vebeen run dr y. #
Start the engine thre eto four times aTer refuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency ope ration mode is cancelled. The vehicle need not
be checked. 476
476
Display messages and
warning/indicator lamps

Cleaning
Cleaning
see Care
Cleaning
Cleaning 0uid
0uid
see windscreen washer 0uid
Climat
Climat e contr
e contr ol
ol
Ac tivating/deactivating.......................... 148
Ac tivating/deactivating the A/C func-
tion (MBUX multimedia system).............. 148
Ac tivating/deactivating the synchro-
nisation function (control panel).............1 49
Ac tivating/deactivating the synchro-
nisation function (MBUX multimedia
system).................................................. 149
Air-recirculation mode (with /ne parti-
cle pre/lter)...........................................1 49
Au tomatic control................................. .148
Calling up the air conditioning menu....... 148
Demisting the windscreen...................... 147
Demisting windo ws................................ 149
Fr ont air vents........................................ 154
Immediate pre-entry clima tecont rol....... 152
No te...................................................... 147
Pre-entry climate control at depa rture
time.......................................................1 50
Pre-entry climate control using theke y... 150 Re
ar air vents......................................... 155
Re sidual heat......................................... 149
Setting (MBUX multimedia system)......... 148
Setting the air distribution...................... 147
Setting the air0ow.................................. 147
Setting theve hicle interior temp era-
ture....................................................... 147
St ationary heater/ ventilation................. 152
Switching the A/C function on/o.
(control panel).......................................1 48
Switching there ar wind owheater
on/o.................................................... 147
THERM ATIC cont rol panel...................... 147
THERMOTRONIC control panel............... 147
Ve ntilating theve hicle (con venience
opening).................................................. 95
Co-dr
Co-dr iv iver airbag
er airbag shut
shut o.
o.
see Automatic co-driver airbag shuto.
Coc Coc kpit kpit
Overview.............................................. 6, 10
Co.ee
Co.ee cup symbol
cup symbol
see ATTENTION ASSIST
Collision det
Collision det ection (park
ection (parked v
ed vehicle)
ehicle)
Information............................................ 212 Combination switch
Combination switch
.................................... .132
Com
Com ponent-speci/c
ponent-speci/c inf
inf or
ormation
mation................... 385
Com
Com put
puter
er
see On-board computer
Conv
Conv enience closing
enience closing...................................... 96
Conv
Conv enience opening
enience opening..................................... 95
Coolant (engine)
Coolant (engine) Levelch eck............................................ 333
No tes..................................................... 395
Cooling
Cooling see Climate control
Cop
Cop yr
yright
ight....................................................... 45
Cor
Cor ner
nering light
ing light............................................. 134
Cr
Cr oss
oss tr
tra1c
a1c (w
(war
arning)
ning)
see Manoeuvring assis tance
Cr
Cr oss
oss Tr
Tra1c
a1c Alert
Alert........................................ 264
Cr
Cr osswind Assist
osswind Assist
Fu nction/no tes...................................... 217
Cr
Cr uise contr
uise contr ol
ol
Ac tivating............................................... 224
Buttons.................................................. 224
Calling up a speed................................. 224 Index
491 491

R
R
R
R adar and ultr
adar and ultr asonic senso rs
asonic senso rs
Damage................................................. 214
R
R adio
adio
Overview of the functions and symbols.. .323
R
R ain closing function
ain closing function
Side windo ws........................................... 95
R
R ain-closing f
ain-closing f eature
eature
Sliding sunroof......................................... 99
REAC
REAC H r
H regulation
egulation........................................... 40
R
R eading lamp
eading lamp
see Interior lighting
R
R eading light
eading light
Switching on/o. (contactless). .............. 285
R
R eal w
eal w ood (Car
ood (Car e)
e) .......................................... 340
R
R ear door (c
ear door (c hild safe
hild safety loc
ty lock)
k)........................... 79
R
R ear f
ear f og light
og light
Switching on/o..................................... 131
R
R ear seat
ear seat
see Seat
R R ear seat belt ear seat belt
Status displ ay.......................................... 52 R
R
ear seat belt st
ear seat belt st atus display
atus display........................... 52
R
R ear windo
ear windo w heat
w heater
er...................................... 147
R
R ear
ear -vie
-vie w mirr
w mirr or
or
Anti-dazzle mode (automatic)................. 145
R
R ear
ear -vie
-vie w mirr
w mirr or
or
see Outside mir rors
R
R ecuper
ecuper ation
ation
Fu nction................................................ 168
Setting.................................................. .169
R
R ecy
ecy cling
cling
see Take -back of end-of-life vehicles
R
R educing ag
educing ag ent
ent
see AdBlue ®
R
R efuelling
efuelling
Refuelling theve hicle............................ .182
R
R egistr
egistr ation
ation
Ve hicle..................................................... 40
R
R egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation
Indonesia............................................... 385
Small components................................. 385
R
R emot emot e Online
e Online
Charging the star ter batter y................... 161
Cooling/heating theve hicle interior...... .161 St
arting theve hicle............................... .162
R
R eplacing a bulb
eplacing a bulb
see Changing bulbs
R
R escue card
escue card ................................................... 41
R
R eser ve
eser ve
Fu el....................................................... 391
R
R ese
ese t function (MBUX multimedia syst
t function (MBUX multimedia syst em)
em).... 292
R
R esidual heat
esidual heat............................................... 149
R
R est
est or
oring (f
ing (f act
actor
ory se
y se ttings)
ttings)
see Reset function (MBUX multimedia system)
R
R estr
estr aint syst
aint syst em
em
Basic instructions forch ildren.................. 61
Fu nction in an accident............................ 47
Fu nctionality............................................ 47
Limi ted pr otection.................................... 46
Malfunction............................................. 47
Pr otection................................................ 46
Self-test...................................................47
Wa rning lamp........................................... 47
Rev
Rev er erse g
se g ear
ear
Engaging................................................ 178
Rev
Rev er
ersing camera
sing camera
Care...................................................... 339 510
510
Index

Medical aids...........................................
.40
Pa rking up............................................. 212
QR code rescue car d............................... 41
Quali/ed specialist workshop.................. .39
Ra ising................................................... 376
REACH regulation.................................... 40
Re gistration............................................. 40
Setting collision de tection (par ked
ve hicle).................................................. 212
St andby mode function.......................... 212
St arting (emer gency ope ration mode ).... 160
St arting (Remo teOnline)........................ 162
St arting (start/stop but ton)................... 160
SV HC (substances of very high conce rn)..40
Switching o. (start/stop button)............ 205
Switching on (start/stop button)............ 159
To wing................................................... 270
Ve ntilating (con venience opening)........... .95
V
V ehicle batt
ehicle batt ery
ery
see On-board electrical system battery (12 V)
V
V ehicle camera
ehicle camera
Information............................................ 214
V
V ehicle data
ehicle data
Displaying (DYNAMIC SELECT)............... 175
Roof load............................................... 397 Ve
hicle height....................................... .397
Ve hicle length........................................ 397
Ve hicle widt h......................................... 397
Wheelbase............................................. 397
V
V ehicle dimensions ehicle dimensions...................................... 397
V V ehicle emerg ehicle emerg ency st
ency start
art............................... 361
V
V ehicle
ehicle identi/cation
identi/cation number
number
see VIN
V
V ehicle
ehicle identi/cation
identi/cation plate
plate
EU type appro val number....................... 386
Maximum gross vehicle weight............... 386
Pa int code............................................. 386
Pe rm issible axle load.............................. 386
VIN........................................................3 86
V
V ehicle int
ehicle int er
erior
ior
Cooling or heating (Remo teOnline)....... .161
V
V ehicle key
ehicle key
see Key
V
V ehicle maint
ehicle maint enance
enance
see ASS YST PLUS
V
V ehicle sensors
ehicle sensors
Information............................................ 214 V
V
ehicle soc ket
ehicle soc ket
Care...................................................... 339
Indicator lamps...................................... 195
V V ehicle t
ehicle t ool kit
ool kit
TIREFIT kit.............................................. 346
To wing eye............................................. 361
V
V entilating
entilating
Con venience opening.............................. .95
V
V entilation
entilation
see Climate control
V
V ents
ents
see Air vents
VIN
VIN Engine compartment.............................. 386
Identi/cation pla te................................. 386
Wi ndsc reen............................................ 386
V V ision
ision
Demisting windo ws................................ 149 W
W
W
W ar
ar ning lamp
ning lamp
see Warning/indicator lamp Index
517
517