2021 MERCEDES-BENZ B-CLASS HATCHBACK cooling

B 250 e
B 250 e
Char
getime – mode 2
with 3.7 kW charging capacity App
rox. 3 h
15 min
Char getime – mode 2
with 2.3 kW charging capacity App
rox. 5 h
30 min
Char getime – mode 2
with 1.8 kW charging capacity App
rox. 7 h
30 min Charging times – modes 2 and 3 apply
toAC
ch arging from 10% to100% of the usable energy
content. Charging time – mode 4 applies toDC
ch arging from 10% to80% of the usable energy
content.
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 co ver
( / page 198). 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 tr ailer hitch
ailer hitch 1
Fastening points
2 Overhang dimension
3 Rear axle cent reline 408
408
Te
ch nical data

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
00BD
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N
N O OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 342). #
Have the engine cooling system checked at a quali/ed specialist workshop.
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. Display messages and
warning/indicator lamps
439
439

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
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 *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.
00D4
Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel.
003A Clean the fuel filter *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the fuel /lter is dirty or thewa ter in the fuel /lter needs tobe drained. #
Consult a quali/ed specialist workshop.
009E
Replace air cleaner *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the engine air /lter is dirty and must be replaced. #
Consult a quali/ed specialist workshop. 440
440
Displ
aymessages 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 and0050
0050Solutions
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.
00B9 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. 486
486
Display messages and
warning/indicator lamps

Ac
tivating/deactivating the A/C func-
tion (control panel).................................1 58
Ac tivating/deactivating the A/C func-
tion (MBUX multimedia system).............. 158
Ac tivating/deactivating the synchro-
nisation function (control panel).............1 59
Ac tivating/deactivating the synchro-
nisation function (MBUX multimedia
system).................................................. 159
Air-recirculation mode (with /ne parti-
cle pre/lter)...........................................1 59
Au tomatic control................................. .158
Calling up the air conditioning menu....... 158
Demisting the windscreen...................... 157
Demisting windo ws................................ 159
Fr ont air vents........................................ 164
Immediate pre-entry clima tecont rol....... 162
No te...................................................... 157
Pre-entry climate control at depa rture
time.......................................................1 61
Pre-entry climate control using theke y... 160
Re ar air vents......................................... 165
Re sidual heat......................................... 159
Setting (MBUX multimedia system)......... 158
Setting the air distribution...................... 157
Setting the air0ow.................................. 157 Setting
theve hicle interior temp era-
ture....................................................... 157
St ationary heater/ ventilation................. 163
Switching there ar wind owheater
on/o.................................................... 157
THERM ATIC cont rol panel...................... 157
THERMOTRONIC control panel............... 157
Ve ntilating theve hicle (con venience
opening).................................................. 96
Clot
Clot hes hook hes hook ................................................ 129
Co-dr
Co-dr iv
iver airbag
er airbag shut
shuto.
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............................................ 221
Combination switch
Combination switch .................................... .140
Com
Com ponent-speci/c
ponent-speci/c inf
infor
ormation
mation................... 394
Com
Com put
puter
er
see On-board computer
Conv
Conv enience closing
enience closing...................................... 97 Conv
Conv
enience opening
enience opening..................................... 96
Coolant (engine)
Coolant (engine) Levelch eck............................................ 342
No tes..................................................... 404
Cooling
Cooling see Climate control
Cop
Cop yr
yright
ight....................................................... 45
Cor
Cor ner
nering light
ing light............................................. 142
Cr
Cr oss
oss tr
tra1c
a1c (w
(war
arning)
ning)
see Manoeuvring assis tance
Cr
Cr oss
oss Tr
Tra1c
a1c Alert
Alert........................................ 273
Cr
Cr osswind Assist
osswind Assist
Fu nction/no tes...................................... 226
Cr
Cr uise contr
uise contr ol
ol
Ac tivating............................................... 233
Buttons.................................................. 233
Calling up a speed................................. 233
Deactivating........................................... 233
Fu nction................................................ 232
Maximum design speed.......................... 182
Re quirements:....................................... 233
Selecting............................................... 233
Setting a speed...................................... 233 Index
501 501

No
tes..................................................... 295
Selecting pro/le options........................ .296
Pr
Pr ogr
ogr amme
amme
see DYNAMIC SELECT
Pr ot
Pr otection of t
ection of t he en
he envir
vironment
onment
No tes...................................................... .24
Ta ke -back of end-of-life vehicles............... 24 Q
Q
QR code
QR code Rescue car d............................................ .41
Quali/ed
Quali/ed specialis
specialist wt work
ork shop
shop .........................39 R
R
R
R adar and ultr
adar and ultr asonic senso rs
asonic senso rs
Damage................................................. 223
R
R adio
adio
Overview of the functions and symbols.. .332
R
R ain closing function
ain closing function
Side windo ws........................................... 96
R
R ain-closing f
ain-closing f eature
eature
Sliding sunroof....................................... 101
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). .............. 294
R
R eal w
eal w ood (Car
ood (Car e)
e).......................................... 349
R
R ear door (c
ear door (c hild safe
hild safety loc
ty lock)
k)........................... 78
R
R ear f
ear f og light
og light
Switching on/o..................................... 139
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 window
ear window
Replacing wiper blade............................ 152
R
R ear windo
ear windo w heat
w heater
er ...................................... 157
R
R ear windo
ear windo w wipers
w wipers
Ac tivating/deactivating.......................... 150
R
R ear
ear -vie
-vie w mirr
w mirr or
or
Anti-dazzle mode (automatic)................. 154
R
R ear
ear -vie
-vie w mirr
w mirr or
or
see Outside mir rors R
R
ecuper
ecuper ation
ation
Fu nction................................................ 178
Setting.................................................. .179
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............................ .191
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............................................... 394
Small components................................. 394
R
R emot
emot e Online
e Online
Charging the star ter batter y................... 171
Cooling/heating theve hicle interior...... .171
St arting theve hicle............................... .171
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....................................................... 400 520 520
Index

V
V
ehicle
ehicle identi/cation
identi/cation plate
plate
EU type appr oval number....................... 394
Maximum gross vehicle weight............... 394
Pa int code............................................. 394
Pe rm issible axle load.............................. 394
VIN........................................................3 94
V
V ehicle int
ehicle int er
erior
ior
Cooling or heating (Remo teOnline)........ 171
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............................................ 223
V
V ehicle so cket
ehicle soc ket
Care...................................................... 348
Indicator lamps...................................... 205
V
V ehicle t
ehicle t ool kit
ool kit
TIREFIT kit...................................... 355, 356
To wing eye............................................. 370
V
V entilating
entilating
Con venience opening.............................. .96V
V
entilation
entilation
see Climate control
V
V ents
ents
see Air vents
VIN
VIN Engine compartment.............................. 394
Identi/cation pla te................................. 394
Wi ndsc reen............................................ 394
V V ision
ision
Demisting windo ws................................ 159 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............................................... 352
Setting up.............................................. 353
W
W ar
ar ning/indicat
ning/indicat or lamp
or lamp
0025 ABSwarning lamp......................... 491
Ó Active Brake Assist warning lam p..4 90
004D Brake system warning lamp (red)... 489 004D
Brake system warning lamp (yel-
low)....................................................... 488
ÿ Coolant warning lamp (red)........... 484
ÿ Coolant warning lamp (yellow).......4 86
0024 Electric parking brake indicator
lamp (red).............................................. 488
003D Electrical fault warning lamp
...................................................... 483, 487
00B9 Engine diagnosis warning lamp...... 486
00BB ESP®
OFF warning lam p................ 492
00E5 ESP®
wa rning lamp 0ashes........... 491
00E5 ESP®
wa rning lamp lights up......... 492
00D4 Fuelreser vewarning lamp lights
up.......................................................... 487
Ù Powe r steering warning lamp
(red)...................................................... 483
_ Reduced warning lamp po wer....... 482
0075 Restraint system warning lam p...... 480
00E9 Seat belt warning lamp 0ashes...... 481
00E9 Seat belt warning lamp lights up.... 482 528 528
Index