cooling MERCEDES-BENZ A-CLASS HATCHBACK 2021 User Guide

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. 436
436
Display messages and
warning/indicator lamps

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. Display messages and
warning/indicator lamps
483
483

Cleaning
Cleaning
see Care
Cleaning
Cleaning 0uid
0uid
see windscreen washer 0uid
Climat
Climat e contr
e contr ol
ol
Ac tivating/deactivating.......................... 154
Ac tivating/deactivating the A/C func-
tion (MBUX multimedia system).............. 154
Ac tivating/deactivating the synchro-
nisation function (control panel).............1 55
Ac tivating/deactivating the synchro-
nisation function (MBUX multimedia
system).................................................. 155
Air-recirculation mode (with /ne parti-
cle pre/lter)...........................................1 55
Au tomatic control................................. .154
Calling up the air conditioning menu....... 154
Demisting the windscreen...................... 153
Demisting windo ws................................ 155
Fr ont air vents........................................ 160
Immediate pre-entry clima tecont rol....... 158
No te...................................................... 153
Pre-entry climate control at depa rture
time.......................................................1 56
Pre-entry climate control using theke y... 156 Re
ar air vents......................................... 161
Re sidual heat......................................... 155
Setting (MBUX multimedia system)......... 154
Setting the air distribution...................... 153
Setting the air0ow.................................. 153
Setting theve hicle interior temp era-
ture....................................................... 153
St ationary heater/ ventilation................. 158
Switching the A/C function on/o.
(control panel)....................................... 154
Switching there ar wind owheater
on/o.................................................... 153
THERM ATIC cont rol panel...................... 153
THERMOTRONIC control panel............... 153
Ve ntilating theve hicle (con venience
opening).................................................. 94
Clot
Clot hes hook hes hook ................................................ 126
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 Collapsible spar
Collapsible spar
e wheel
e wheel
In0a ting................................................ .387
No tes..................................................... 386
Collision det
Collision det ection (park
ection (parked v
ed vehicle)
ehicle)
In fo rm ation........................................... .218
Combination switch
Combination switch ..................................... 136
Com
Com ponent-speci/c
ponent-speci/c inf
infor
ormation
mation................... 391
Com
Com put
puter
er
see On-board computer
Conv
Conv enience closing
enience closing...................................... 94
Conv
Conv enience opening
enience opening..................................... 94
Coolant (engine)
Coolant (engine) Levelch eck............................................ 336
No tes..................................................... 401
Cooling
Cooling see Climate control
Cop
Cop yr
yright
ight....................................................... 45
Cor
Cor ner
nering light
ing light............................................. 138
Cr
Cr oss
oss tr
tra1c
a1c (w
(war
arning)
ning)
see Manoeuvring assis tance
Cr
Cr oss
oss Tr
Tra1c
a1c Alert
Alert........................................ 270 498
498
Ind
ex

R
R
egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation
Indonesia............................................... 391
Small components................................. 391
R R emot
emot e Online
e Online
Charging the star ter batter y................... 167
Cooling/heating theve hicle interior....... 167
St arting theve hicle............................... .168
R
R eplacing a bulb
eplacing a bulb
see Changing bulbs
R
R escue card
escue card................................................... 42
R
R eser ve
eser ve
Fu el....................................................... 397
R
R ese
ese t function (MBUX multimedia syst
t function (MBUX multimedia syst em)
em).... 298
R
R esidual heat
esidual heat............................................... 155
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 es
es tr
traint syst
aint syst em
em
Basic instructions forch ildren.................. 61
Fu nction in an accident............................ 47
Fu nctionality........................................... .47
Limited pr otection....................................46
Malfunction............................................. 47
Pr otection................................................ 46 Self-test...................................................47
Wa
rning lamp........................................... 47
R
R e ev
ver
er se g
se g ear
ear
Engaging................................................ 184
Rev
Rev er
ersing camera
sing camera
Care...................................................... 342
Fu nction................................................ 255
Opening the camera co ver (360°
Camera)................................................ 260
Switching automatic operation on/o.
(360° Camera)...................................... 260
Rev Rev er
ersing lights (c
sing lights (c hanging bulbs)
hanging bulbs).................. 145
Rims (car
Rims (car e)
e).................................................. 342
R
R oll awa
oll awa y prot
y pr otection
ection
see HOLD function
R
R oller sunblind
oller sunblind
Sliding sunroof......................................... 95
R
R oof lining (car
oof lining (car e)
e).......................................... 343
R
R oof load
oof load.....................................................4 04
R
R oof lugg
oof lugg ag
age r
e r ack
ack
Loading.................................................. 127
Securing................................................ 127 R R
oute
oute
Calculating............................................. 303
Selecting options................................... 303
R
R out
out e guidance wit
e guidance wit h augment
h augmented r
ed reality
eality
Ac tivating............................................... 303
Displaying street names and house
numbers................................................ 303
R R out
out e-based oper
e-based oper ating-mode s
ating-mode strtrat
at egy
egy
Fu nction/no tes...................................... 177
R
R out
out e-based speed adapt
e-based speed adapt ation
ation
Fu nction................................................ 237
Setting.................................................. .238
R
R un-0at
un-0at c
char
har act
acter
eristics
istics
MOExtended tyres................................. 348
R
R unning-in not
unning-in not es
es.......................................... 168 S
S
Safe
Safe ty syst
ty syst ems
ems
see Driving saf ety sy stem
Sa fe
Safe ty v
ty vest
est.................................................. .346
Searc
Searc h light
h light
Switching on/o. (contactless). .............. 291518
518
Index

V
V
ehicle dimensions
ehicle dimensions ...................................... 403
V
V ehicle emerg
ehicle emerg ency st
ency start
art...............................3 64
V
V ehicle
ehicle identi/cation
identi/cation number
number
see VIN
V
V ehicle
ehicle identi/cation
identi/cation plate
plate
EU type appr oval number....................... 392
Maximum gross vehicle weight............... 392
Pa int code............................................. 392
Pe rm issible axle load.............................. 392
VIN........................................................3 92
V
V ehicle int
ehicle int er
erior
ior
Cooling or heating (Remo teOnline)........ 167
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............................................ 220
V
V ehicle so cket
ehicle soc ket
Care...................................................... 342
Indicator lamps...................................... 201
V V ehicle t
ehicle t ool kit
ool kit
TIREFIT kit...................................... 349, 350 To
wing eye............................................. 363
V
V entilating
entilating
Con venience opening.............................. .94
V
V entilation
entilation
see Climate control
V
V ents
ents
see Air vents
VIN
VIN Engine compartment.............................. 392
Identi/cation pla te................................. 392
Wi ndsc reen............................................ 392
V
V ision
ision
Demisting windo ws................................ 155 W
W
W
W ar
ar ning lamp
ning lamp
see Warning/indicator lamp
W
W ar
ar ning syst
ning syst em
em
see ATA (anti-theT alarm system)
W
W ar
ar ning tr
ning tr iangle
iangle
Re moving............................................... 346
Setting up.............................................. 347 W
W
ar
ar ning/indicat
ning/indicat or lamp
or lamp
! ABSwarning lamp......................... 488
Ó Active Brake Assist warning lam p..4 87
J Brake system warning lamp (red)... 486
J Brake system warning lamp (yel-
low)....................................................... 485
ÿ Coolant warning lamp (red)........... 481
ÿ Coolant warning lamp (yellow).......4 83
! Electric parking brake indicator
lamp (red).............................................. 485
# Electrical fault warning lamp
...................................................... 480, 484
; Engine diagnosis warning lamp...... 483
å ESP®
OFF warning lam p................ 489
÷ ESP®
wa rning lamp 0ashes........... 488
÷ ESP®
wa rning lamp lights up......... 489
æ Fuelreser vewarning lamp lights
up.......................................................... 484
Ù Powe r steering warning lamp
(red)...................................................... 480 Index
525 525