engine overheat MERCEDES-BENZ A-CLASS HATCHBACK 2018 User Guide

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
? Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120 °C. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. Do not con‐
tinue driving under any circums tances. #
Obser vethe messages on the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: #
Consult a qualified specialist workshop. 558
Display messages and warning/indicator lamps

Ad
aptive Highbeam Assist cur rently
una vailable See Owner's Manual .........547
Ad aptive Highbeam Assist inopera‐
tive ...................................................... 547
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .547
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .547
¯ AdBlue sy stem fault Engine
st art not possible ................................ 527
¯Ad Blue system fault Perf.
re duced in XXX miles See Owner's
Manual ................................................ 527
¯ AdBlue sy stem fault See Own‐
er's Manual ........................................ .527
4 Add 1 litre engine oil when next
re fuelling ............................................. 525
Anti-theft ala rmsystem Malfunction ...545 App
lybrake todeselect Park (P)
position ...............................................5 38
Apply brake toselect R ........................ 537
ÀAT TENTION ASSIST inoperative ...51 5
À ATTENTION ASSIS T:Take a
break! .................................................. 514
b Automatic driving lights inoper‐
ative .................................................... 547
Au xilia rybattery malfunction .............. 535
_Before starting the engine, turn
th esteering wheel. .............................. 542
Blind Spot Assi stcur rently una vaila‐
ble See Owner's Manual ......................512
Blind Spot Assi stinope rative ............... 513
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...5 15
Brake immediately ............................... 499
ÂChange key bat teries .................. 534
JCheck brake fluid le vel................ 504 ïCheck trailer hitch lock (white
display message) ................................ .539
hChe cktyre(s) ............................... 529
!Clean the fuel filter .................... .520
Clutch overheated Avoid pulling away
fo r XX:XX mins ................................... .536
?Coolant Stop vehicle Switch
engine off ............................................ 520
Cruise contro l and Limiter inope ra‐
tive ....................................................... 519
Cruise cont rol inope rative .................... 519
Cruise cont rol off ................................ .518
Cur rently una vailable Camera view
re stricted ............................................. 517
Cur rently una vailable Radar sensors
dirty .....................................................5 16
! currently una vailable See Own‐
er's Manual ........................................ .505
÷cur rently una vailable See Own‐
er's Manual ........................................ .499 Index
571

hRe
ctify tyre pressure ................... 530
Re duce speed ...................................... 532
ØRe fill Ad Blue Engine start not
possible .............................................. .526
ØRe fill Ad Blue See Owne r’s Man‐
ual .......................................................5 25
!Re lease parking brake .................503
¸Re place air cleaner ...................... 521
,Re placekey See Owner's Man‐
ual ...................................................... .534
ÂRe placekey ................................ .533
æRe servefuel le vel........................ 524
6Re stra int sys. malfunction Con‐
sult workshop ...................................... 507
Re versing not poss. Consult work‐
shop ....................................................5 38
Risk of vehicle rolling away Apply
pa rking brake See Owner's Manual .....5 39 Risk of
vehicle rolling away Parking
brake not applied See Owner's Man‐
ual ...................................................... .504
Risk of vehicle rolling Driver door
open and transmission not in P ...........541
# See Owner's Manual ................... 522
Speed limit (winter tyres) XXX km/h ...519
Ð Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual ....542
Ð Steering malfunction See Own‐
er's Manual .......................................... 541
Ð Steering malfunction Stop
immediately See Owner's Manual .......542
#St opvehicle Lea veengine run‐
ning ..................................................... 522
#St opvehicle See Owner's Man‐
ual .......................................................5 21
ç suspended ................................... 51 8
b Switch off lights .......................... 546
b Switch on headlamps ..................546Te
aching in transmission comple te...... 537
Te aching in transmission Operate
selec tor le ver Brake for XX seconds
Risk of vehicle rolling .......................... 535
To shift out of P or N,depress brake
and start engine .................................. 537
To p up coolant See Owner ’sManual ... 522
¥To p upwasher fluid .................... .545
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ......................51 5
Tr af fic Sign Assi stinope rative .............. 514
ï Trailer coupling extending… ......... 535
Tr ans. oil overheated Drive on with
care ..................................................... 537
Tr ansmission Malfunction ....................541
Tr ansmission Malfunction Stop ........... 535
Tr ansmission Malfunction Visit work‐
shop ....................................................5 37
! Turn on the ignition torelease
th e parking brake ................................ 500 Index
573