check engine MERCEDES-BENZ S-CLASS SALOON LONG 2020 Owner's Manual

T
St
anding lights (/ page152)
L Low beam (
/page 152)
K High beam (/
page154)
#! Tu
rn signal lights (/ page154)
R Re
ar fog light (/ page152) Occupan
t safety Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
6 Re stra int sy stem warning
lamp *T
he redre stra int sy stem warning lamp is lit while the engine is running.
The restra int sy stem is malfunctioning (/ page41). &
WARNING Risk of inju rydue tomalfunctions in there stra int sy stem
Components in there stra int sy stem may be activated unintentionally or not deploy as intended in an accident. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. #
Drive on carefully. #
Comply with the messages on the driver displa y. #
Consult a qualified specialist workshop immediatel y. Displ
aymessa ges and warning/indicator lamps 551

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
; Engine diagnosis warning
lamp *T
he yellow engine diagno stics warning lamp is lit while the engine is running.
A malfunction has occu rred in the engine, theex haust sy stem or the fuel sy stem.
The emissions limit value may ha vebeen exceeded and the engine may be running in emergency operation mode. #
Have theve hicle checked as soon as possible at a qualified specialist workshop.
Ve hicles with a diesel engine: the fuel tank may ha vebeen run dr y. #
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.
#
Elect rical fault warning
lamp *T
hered elect rical fault warning lamp is lit.
There is a fault in the electrics. #
Notethe messages on the driver's displa y.
8
Fu elreser ve wa rning lamp
lights up *T
he yellow fuel reser vewarning lamp lights up while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel. Displ
aymessa ges and warning/indicator lamps 557

Brakes
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! Elect ric pa rking brake indi‐
cator lamp (red)
!
The elect ric pa rking brake
(yellow) indicator lamp *T
he red elect ric pa rking brake indicator lamp flashes or is lit.
The yellow elect ric pa rking brake indicator lamp also lights up in theev ent of a malfunction. #
Notethe messages on the driver's displa y.
J
Brake sy stem warning lamp
(yellow) *T
he yellow brake sy stem warning lamp is lit while the engine is running. &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. The hill
start assist may be malfunctioning. #
Adjust your speed and drive on carefull y,leaving a suitable dis tance totheve hicle in front. 558
Display messages and warning/indicator lamps

Driving saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! ABS warning lamp *T
he 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. #
Notethe messages on the driver's displa y. &
WARNING Thereis a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking.
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, 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. ÷
ESP ®
wa rning lamp flashes *
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
One or more wheels has reached its grip limit (/ page 222). #
Adapt your driving style to suit thero ad and weather conditions. 562
Display messages and warning/indicator lamps

To
pTe ther............................................... 68
Children Avoiding dangers in theve hicle............... 58
Basic instructions.................................... 57
Chock Storage location.................................... 391
Chock see Chock
City lighting................................................ 157
Cleaning see Care
Climate control Activating/deactivating (rear operat‐
ing unit)................................................ .174
Ac tivating/deactivating the A/C
function (MBUX multimedia sy stem)...... 174
Ac tivating/deactivating the synchro‐
nisation function (MBUX multimedia
sy stem).................................................. 175
Air-reci rculation mode.......................... .175
Au tomatic control.................................. 174
Calling up the air conditioning menu...... 174
Demi sting the windscreen..................... 172
Demi sting windo ws................................ 175Fr
ont air vents....................................... 185
Glo vebox air vent.................................. 187
Immedia tepre-entry climate control.....1 80
Information on the windscreen heater... 17 7
Inserting/removing theflacon (fra‐
gr ance sy stem)...................................... 176
Ionisation............................................... 176
No te....................................................... 172
Pre-ent ryclimate control at depar‐
ture time................................................ 178
Re ar air vents........................................ 186
Re ar operating unit................................ 173
Re sidual heat......................................... 175
Re sidual heat (rear operating unit)......... 176
Setting (MBUX multimedia sy stem)........ 174
Setting the air distribution..................... 172
Setting the air flow ................................. 172
Setting the fragrance sy stem.................1 76
Setting thete mp eratur e........................ 172
St ationary heater/ ventilation................ 181
Switching on/of f................................... 173
Switching there ar wind owheater
on/off....................................................1 72
THERMOTRONIC contro l panel..............172
Ve ntilating theve hicle (con venience
opening).................................................. 95 Co
ckpit
Overview................................................... 6
Co ffee cup symbol
see ATTENTION ASSIST with micro‐
sleep de tection
Collision de tection (pa rked vehicle)
Information............................................ 217
Combination switch .................................. 154
Consum ption indicator
Calling up.............................................. 201
Content sharing menu Overview............................................... 299
Control elements Touch-sensitive........................................ 23
Con venience closing ................................... 95
Con venience opening ..................................95
Coolant (engine) Check le vel............................................ 352
No tes..................................................... 487
Cooling see Climate control
Co pyright..................................................... 39 Index
573

Display message
Calling up (driver display)...................... 492
Notes....................................................4 92
Display messages ç - - - km/h ..................................... 523
È - - - km/h ..................................... 522
# 12V on-board electrical sys‐
te m Visit workshop ...............................5 38
Û 48 V battery See Owner's Man‐
ual......................................................... 540
: Active Light Sy stem inoperative... 499
¯ AdBlue sy stem fault Engine
st art not possible................................. .547
¯ AdBlue sy stem fault See Own‐
er's Manual .......................................... .546
¯ AdBlue sy stem malfunction
Emerg. op.: max. XXX km/h Start
not poss. in XXX km............................. .547
¯ AdBlue sy stem malfunction
Emer gency op. in XXX km See Own‐
er's Manual........................................... 5465
Add 1 litre engine oil when
next refuelling....................................... 548
é ATTENTION ASSIST inoperative ....521
P ATTENTION ASSIST Microsleep
Ta ke a break! ........................................ .522
é ATTENTION ASSIS T:Take a
break!....................................................5 22
: Automatic driving lights inoper‐
ative...................................................... 498
Ø Beginning emer gency stop........... 525
J Brake immediately....................... 520
Á Change key bat teries ...................4 96
J Checkbrake fluid le vel................. 520
# Check brake pads See Owner's
Manual.................................................. 521
ï Check trailer hitch lo ck................ 503
h Check tyre(s)................................ 542
! Clean the fuel filter ...................... .512
ÿ Coolant Stop vehicle Switch
engine off..............................................5 10á
currently una vailable Camera
dirty....................................................... 529
¸ Currently una vailable Radar
dirty.......................................................5 28
! currently una vailable See Own‐
er's Manual .......................................... .533
÷ currently una vailable See Own‐
er's Manual .......................................... .535
5 Engine oil le vel cannot be
measured .............................................. 549
5 Engine oil le velRe duce oil le vel.... 548
5 Engine oil le velSt op vehicle
Switch engine off.................................. 548
5 Engine oil pressu reStop
Switch off engine.................................. 549
ä Fault Drive at max. 80 km/h........ 530
6 Front left malfunction Consult
wo rkshop (e xample).............................. 493
& inoperative Battery low................. 501
& Inoperati veRefuel vehicle ............ 501 Index
575

Ac
tive Steering Assist cur rently
una vailable See Owner's Manual ...........524
Ac tive Steering Assist inoperative ......... 525
Ac tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual ...........526
Ac tive Stop-and-Go Assist inopera‐
tive See Owner's Manual....................... 526
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual......................................................... 500
Ad aptive Highbeam Assist Plus inop‐
erative.................................................. .500
Ambient light warning support inop‐
erative.................................................. .509
Anti-theft alarm sy stem Malfunction ..... 509
Apply brake and start engine toshift
out of P or N.......................................... 513
App lybrake todeselect P position .........513
App lybrake toengage D or R.................5 13
App lybrake toengage R ........................ 513App
lyparking brake topark Visit
wo rkshop...............................................5 13
Au xilia rybattery malfunction .................516
Cann otstart engine See Owner's
Manual................................................. .540
Change steering wheel/ seat posi‐
tion until 6 dots are visible on the
upper edge of the screen...................... 530
Check dipped-beam setting (left/
ri ght-side traf fic)................................... 500
Consult workshop without changing
th e transmission position....................... 51 5
Device de tected at diagnostics con‐
nection See Owner's Manual................. 537
DIGITAL LIGHT Functions limited ........... 499
Dipped-beam setting (left/right-side
traf fic) Manual adjustment only............ 500
Driver came rainope rative See Own‐
er's Manual........................................... 530 Driver camera view cur
rently restric‐
te d See Owner's Manual....................... 529
Fr ont passenger airbag disabled See
Owner's Manual....................................4 94
Fr ont passenger airbag enabled See
Owner's Manual....................................4 94
Haza rdwa rning lamp sy stem Mal‐
function................................................. 500
Limited availability of Active Parking
Assist manoeuvring assis tant See
Owner's Manual.................................... 532
Limiter inope rative................................ 523
Mo tor can be star ted again.................... 541
MULTIBEAM LED Functions limited ....... 499
N au tomatical lyactivated Please
engage transmission position again .......515
Only select P when vehicle is station‐
ary......................................................... 512578
Index