2018 MERCEDES-BENZ A-CLASS SALOON engine coolant

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Start the engine thre eto four times af terre fuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency operation mode is cancelled. The vehicle need not
be checked.
æ Fu elreser ve wa rning lamp The
yellow fuel reser ve wa rning lamp lights up while the engine is running.
The fuel supp lyhas dropped into there ser verange. #
Refuel.
#
Electrical fault warning
lamp The
red elect rical fault warning lamp is lit.
There is a fault in the electrics. #
Obser vethe messages on the multifunction displa y.
?
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. Displ
aymessa ges and warning/indicator lamps 569

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions &
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.
or #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (/ page 435). #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120 °C. 57 0
Displaymessa ges and warning/indicator lamps

Ac
tivating/deactivating the synchro‐
nisation function (cont rol panel) .......... 147
Ac tivating/deactivating the synchro‐
nisation function (multimedia sys‐
te m) ..................................................... 14 8
Air di stribution settings .......................1 47
Air-reci rculation mode ........................ .148
Au tomatic control ................................ 147
Calling up the air conditioning menu ... 147
Defrosting the windscreen ...................1 45
Demisting wind ows............................. 14 8
Fr ont air vents ..................................... 15 3
No te .................................................... 14 5
Re ar air vents ...................................... 154
Re sidual heat ....................................... 14 8
Sets the air flow ................................... 14 5
Setting (multimedia sy stem) ................1 47
Setting the air distribution ...................1 45
Setting thete mp erature ......................1 45
St ationary heater/ ventilation .............. 14 8
Switching on/off ................................. 14 6
Switching there ar wind owheater
on/off .................................................1 45
THERMATIC control panel .................... 14 5
THERMOTRONIC contro l panel ............14 5Ve
ntilating theve hicle (con venience
opening) ................................................ 87
Cockpit ........................................................ .6
Overview .................................................6
Cof fee cup symbol
see ATTENTION ASSIST
Combination switch ................................12 9
Compass .................................................. .371
Compu ter
see On-board computer
Connection status
Displ aying ............................................ 408
Overview ............................................ .408
Connectivity Switching transmission of theve hicle
position on/off .................................... 320
Contacts ................................................... 383
Calling up ............................................ 384
Deleting ............................................... 386
Deleting favo urites .............................. 386
Downloading (from mobile phone) ...... 384
Importing ............................................ 385
Importing (o verview) .......................... .385 Information .......................................... 383
Making a call ....................................... 385
Na me form at ...................................... .384
Options ................................................ 385
Saving as a favo urite .......................... .386
Selecting options for suggestions ........ 386
St oring ................................................ 385
Con venience closing ................................. 87
Con venience opening ................................ 87
Coolant (engine) Check le vel .......................................... 435
No tes .................................................. 503
Cooling see Climate control
Co pyright .................................................... 31
Cornering light ........................................ .131
Cross Traf fic Alert .................................. .236
Crosswind Assist Function/no tes .................................... 194
Cruise control .......................................... 201
Ac tivating ............................................ 203
Buttons ................................................ 203
Calling up a speed ............................... 203 Index
581

Ac
tive Steering Assist cur rently
una vailable See Owner's Manual .........525
Ac tive Steering Assist inoperative .......524
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual .........559
Ad aptive Highbeam Assist inopera‐
tive ...................................................... 559
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .560
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .560
¯ AdBlue sy stem fault Engine
st art not possible ................................ 539
¯Ad Blue system fault Perf.
re duced in XXX miles See Owner's
Manual ................................................ 538
¯ AdBlue sy stem fault Perf.
re duced: XXX km/h Nostart in XXX
km ...................................................... .538 ¯
AdBlue sy stem fault See Own‐
er's Manual ........................................ .538
4Ad d 1 litre engine oil when next
re fuelling ............................................. 536
Anti-theft ala rmsystem Malfunction ... 556
Apply brake todeselect Park (P)
position ...............................................5 40
Apply brake toselect R ........................ 543
À ATTENTION ASSIST inoperative ... 526
ÀAT TENTION ASSIS T:Take a
break! .................................................. 525
bAu tomatic driving lights inoper‐
ative .................................................... 559
Au xilia rybattery malfunction ...............541
_ Before starting the engine, turn
th esteering wheel. .............................. 544
Blind Spot Assi stcur rently una vaila‐
ble See Owner's Manual ...................... 523
Blind Spot Assist inope rative ............... 524 Blind Spot Assi
stnot available when
to wing a trailer See Owner's Manual ...5 26
Brake immediate ly............................... 51 0
Á Changekey bat teries .................. 550
JCheck brake fluid le vel................ .515
Check brake pads See Owner's Man‐
ual ...................................................... .523
ïChe cktrailer hitch lo ck(white
display message) .................................5 52
Che cktyre pressu resth en restart
Ru n Flat Indicator ................................ 549
h Check tyre(s) .............................. .546
!Clean the fuel filter ...................... 531
Clutch overheated Avoid pulling away
fo r XX:XX mins .................................... .541
? Coolant Stop vehicle Switch
engine off ............................................ 534
Cruise contro l and Limiter inope ra‐
tive ...................................................... 529
Cruise control inope rative ................... 529 584
Index

On-board diagnostics inter
face
see Diagno stics connection
On-boa rdelectronics
Engine electronics .............................. .492
No tes .................................................. 492
Tw o-w ayradios .................................... 492
Online services In Car Of fice ........................................ 390
Open-source so ftwa re ............................... 31
Opening the boot lid using your foot
HANDS-FREE ACCESS .......................... .84
Operating fluids
Ad Blue ®
............................................... 500
Ad ditives (fuel) .................................... 498
Brake fluid .......................................... .502
Coolant (engine) .................................. 503
Engine oil ............................................. 501
Fu el (diesel) ......................................... 499
Fu el (petrol) ......................................... 497
No tes .................................................. 496
Wi ndsc reen washer fluid .................... .504
Operating saf ety
Declaration of Conformity (electro‐
magnetic compatibility) ........................ .25Declaration of conformity (ja
ck) ............ 26
Declaration of con form ity (TIREFIT kit) .. 26
Declaration of con form ity (wireless
ve hicle components) ............................. 25
Information ............................................ 24
Operating sy stem
see On-board computer
Outside mir rors ................................ 141, 14 2
Anti-dazzle mode (automatic) .............. 14 2
Au tomatic mir rorfo lding function ........ 14 3
Fo lding in/out ...................................... 141
Operating the memory function ........... 107
Pa rking position .................................. .142
Setting ................................................. 141
Overhead control panel Overview ................................................ 14
Owner's Manual Vehicle equipment ................................. 24
Owner's Manual (digital) .......................... 20 P
Pa int code ................................................ 494
Pa intwork (cleaning instructions) .........439 Pa
nic alarm ................................................ 74
Ac tivating/deactivating ......................... 74
Pa noramic sliding sunroof
see Sliding sunroof
Pa rk position
Inserting .............................................. 17 0
Selecting au tomatically ....................... 17 0
Pa rking
see Electric parking brake
Pa rking (navigation service)
Pa ying parking charge s ........................ 374
Showing a pa rking option on the
map ..................................................... 374
Pa rking (service for navi gation)
No tes ................................................... 373
Selecting pa rking options .................... 373
Pa rking aid
see Parking Assist PARKTRONIC
Pa rking Assist PARKTRONIC .................. 220
Ac tivating ............................................ 222
Ad justing warning tones ...................... 223
Deactivating ........................................ 222
Fu nction .............................................. 220 600
Index

VIN
............................................................ 494
Engine compa rtment ........................... 494
Identification plate .............................. 494
Wi ndsc reen ......................................... 494
Vi sion
Demisting windo ws............................. 14 8
Vo ice control sy stem
see LINGU ATRO NIC W
Wa rning lamps
see Warning/indicator lamps
Wa rning sy stem
see ATA (anti-theft alarm sy stem)
Wa rning triangle
Re moving ............................................ 447
Setting up ............................................ 447
Wa rning/indicator lamp
!ABS warning lamp ...................... .563
JBrake sy stem warning lamp
(red) .................................................... 562 JBrake sy
stem warning lamp
(yellow) ................................................ 564
?Coolant warning lamp ................ .569
#Electrical fault warning lamp ...... .569
;Engine diagnosis warning lamp .. .568
åESP ®
OFF warning lamp .............. 566
÷ESP ®
wa rning lamp flashes ........ .565
÷ESP ®
wa rning lamp lights up ...... .565
æFu elreser vewarning lamp .......... 569
ÐPo werst eering sy stem warning
lamp .................................................... 572
! Red indicator lamp, elect ric
parking brake applied .......................... 564
6Re stra int sy stem warning lamp .. .566
7Seat belt warning lamp flashes .. .567
7 Seat belt warning lamp lights
up ........................................................ 567
ïTr ailertow hit chwarning lamp .... .573
h Tyre pressure monitoring sys‐
te m wa rning lamp flashes .................... 571h
Tyre pressure monitoring sys‐
te m wa rning lamp lights up .................. 571
L Warning lamp for dis tance
wa rning function ................................ .568
!Ye llow elect ric pa rking brake
indicator lamp is malfunctioning ........ .564
Wa rning/indicator lamps .......................560
Overview ............................................. 560
PA SSENGER AIR BAG ............................ 43
Wa rranty ....................................................29
Wa sher fluid
see Windsc reen washer fluid
Wa shing byhand (care) .......................... 438
Wa ter tank
see Air-water duct
We ather information ............................... 372
We b br owser
Calling up a web page .........................4 09
Calling up options ................................ 411
Calling up the settings .......................... 411
Del eting a bookmark ............................ 411
Del eting Internet his tory ...................... 411 Index
61 3