2018 MERCEDES-BENZ A-CLASS SALOON air condition

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop.
! ABS warning lamp The
yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If th ere is an additional warning tone, EBD is malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be malfunctioning. &
WARNING Thereisrisk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning, the wheels could lock when braking
The steering capability and braking characteristics are thus se verely impaired. The braking dis tance may increase in
an emergency braking situation. In addition, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Drive on carefully. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 563

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

Ty
res Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp lights
up The
yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring sy stem has de tected tyre pressure loss in at least one of the tyres. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tyre pressure and the tyres.
h The
yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) flashes for appro ximately one
minu teand then remains lit.
The tyre pressu remonitoring sy stem is faulty. Display messages and
warning/indicator lamps 571

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ty re pressure monitoring
sy stem warning lamp
fl ashes &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
If th e tyre pressure monitoring sy stem is malfunctioning, it is not able toissue a warning if there is pressure loss in
one or more of the tyres.
Ty res with insuf ficient tyre pressure ma y,forex ample, af fect theve hicle's handling characteristics, steering and
braking. ‑ #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. #
Consult a qualified specialist workshop. Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ð Po we rst eering sy stem
wa rning lamp The
red po werst eering sy stem warning lamp is lit while the engine is running.
The po wer-assis tedsteering or thesteering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances. 572
Displaymessa ges and warning/indicator lamps

Ad
vanced sound sy stem
Ac tivating/deactivating au tomatic
vo lume adjustment .............................. 428
Ad justing the balance/fader ............... 428
Ad justing treble, mid-range and bass
settings ............................................... 428
Calling up the sound menu .................. 427
Information .......................................... 427
Af ter-sales service centre
see ASS YST PLUS
Air conditioning menu Calling up ............................................. 147
Air conditioning sy stem
see Climate control
Air distribution Setting ................................................ .145
Setting (multimedia sy stem) ................1 47
Air inlet see Air-water duct
Air pressu re
see Tyre pressure
Air vents ................................................... 15 3
Ad justing (front) .................................. 15 3Ad
justing (rear) .................................... 154
Air vents
see Air vents
Ai r-re circulation mode ............................ 14 8
Air-water duct .......................................... 436
Ke eping free ........................................4 36
Airbag ........................................................ .39
Ac tivation .............................................. 33
Fr ont airbag (driver, front passenger) ....39
Ins tallation locations ............................ .39
Knee airbag ........................................... 39
Overview ............................................... 39
PA SSENGER AIR BAG indicator lamp .... .43
Pr otection ..............................................40
Re duced pr otection ...............................41
Side impact airbag ................................ 39
Wi ndow airbag ....................................... 39
Ai rflow
Setting ................................................ .145
Alarm see Panic alarm
Alarm sy stem
see ATA (anti-theft alarm sy stem) Alternative
route
see Route
Ambient lighting Setting (multimedia sy stem) ................1 35
Android Auto ............................................ 395
Connecting a mobile phone ................. 396
Ending ................................................. 396
Information .......................................... 395
Overview ............................................. 395
Sound settings .................................... 396
Tr ans ferred vehicle data ......................3 96
Animals Pets in theve hicle ..................................71
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains
Anti-theft ala rmsystem
see ATA (anti-theft alarm sy stem)
Anti-theft pr otection
Ad ditional door lock .............................. 77
Immobiliser ............................................ 94576
Index

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