2021 MERCEDES-BENZ B-CLASS HATCHBACK engine overheat

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
R The engine coolant pump is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120°C. &
W
WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theeve nt 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. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. Do not continue driving. #
Notethe messages on the instrument displa y.
If t If t he coolant t
he coolant t em
em per
per atur
atur e displa
e displa y is at t
y is at the low
he lower end of t
er end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Consult a quali/ed specialist workshop.
If t
If t he coolant t he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the upper end of t
he upper end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Exit theve hicle and keep a safe distance from it until the engine has cooled down. #
Check the coolant le vel (/ page 342). Display message
s andwarning/indicator lamps
485
485

006F
2nd seat row, right Not loc ked...... 437
003D 12 V battery See Owner's Man-
ual......................................................... 467
ò Acoustic presence indicator
inoperative............................................ .426
: Active Light System inoperative..... 420
0099 AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 476
0099 AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 475
0099 AdBlue system fault Engine
start not possible................................... 476
0099 AdBlue system fault See Own-
er's Manual............................................ 475
00B3 Add 1 litre engine oil when next
re fuelling ............................................... 477
é ATTENTION ASSIST inoperati ve..... 451
é ATTENTION ASSIS T:Take a
break!.................................................... 451 :
Automatic driving lights inoper-
ative...................................................... 420
00D7 Battery overheated Stop, every-
body out! Outdoors if possible ................ 428
û Before starting the engine, turn
th e steering wheel.................................. 435
004D Brake immediately ........................ 450
Á Change key batteries .................... 417
00E5 Charger cable connected .............. 426
004D Check brake 0uid le vel.................. 450
ï Check trailer hitch lock (white
display message) .................................... 432
0077 Check tyre(s) ................................ 470
003A Clean the fuel /lter....................... 440
ÿ Coolant Stop vehicle Switch
engine o............................................... 439
0025 currently una vailable See Own-
er's Manual............................................4 62
00E5 currently una vailable See Own-
er's Manual............................................4 6300B3
Engine oil le vel cannot be meas-
ured....................................................... 478
00B3 Engine oil le velRe duce oil le vel..... 477
00B3 Engine oil le velSt op vehicle
Switch engine o.................................... 477
00B3 Engine oil pressure Stop Switch
o. engine.............................................. 478
ä Fault Drive at max. 80 km/h ......... 461
0075 Front leT malfunction Consult
wo rkshop (e xample)...............................4 14
003B inoperative Battery low................. 423
003B inoperative Char geHV battery...... 424
003B inoperati veHigh-voltage battery
ch arging inco mplete ............................... 424
003B inoperative Refuel vehicle............. .424
003B inoperative See Owner's Man........ 423
0025 inoperative See Owner's Manual.. .463
00E5 inoperative See Owner's Manual.. .464
007A inoperative See Owner's Manual.. .465
0053 Inoperative................................... 466 Index
503 503

Au
xiliary battery malfunction (white
displ aymessage) .................................... 445
Beginning emer gency stop..................... 456
Blind Spot Assist cur rently una vailable
See Owner's Manual.............................. 457
Blind Spot Assist inoperative.................. 457
Blind Spot Assist not available when
to wing a trailer See Owner's Manual ...... 457
Cann otstart engine See Owner's
Manual................................................. .438
Charging fault Please change charging
me thod See Owner's Manual .................427
Charging me thod cur rently una vaila-
ble Please try again or change charg-
ing me thod............................................ 427
Check brake pads See Owner's Man-
ual........................................................ .450
Check tyre pressures then restart Run
Flat Indicator......................................... 473 Clutch
overheated Avoid pulling away
until thewa rning goes out...................... 445
Cruise control and Limiter inoperative.... 452
Cruise control inoperative...................... 452
Cruise control o.................................... 452
Depress clutch fully tostart engine........ 445
Device de tected at diagnostics con-
nection See Owner's Manual................. .467
Drive system Malfunction Stop Switch
engine o............................................... 441
Drive system Malfunction Visit work-
shop ...................................................... 441
Fr ont-passenger airbag disabled See
Owner's Manual .................................... .415
Fr ont-passenger airbag enabled See
Owner's Manual .................................... .416
Hazard warning lamps malfunctioning .... 423
Head-up display cur rently una vailable
See Owner's Manual.............................. 433
Head-up display inoperative ...................434Limiter inoperative................................. 452
Limiter passive....................................... 452
N permanently active Risk of
vehicle
ro lling....................................................4 42
Not possible tounlock charging cable
See Owner's Manual.............................. 426
Only elect ric drive available Power
limited................................................... 427
Only select Park (P) when vehicle is
stationary.............................................. 441
Pa rking Assist and PARKTRONIC inop-
erative See Owner's Manual................... 461
Pa rking lock inoperative Apply the
parking brake ........................................ .444
Place theke y in the mar ked space
See Owner's Manual.............................. 419
PRE-SAFE inoperative See Owner's
Manual.................................................. 417
Re duce speed........................................ 472 506 506
Index