2018 MERCEDES-BENZ S-CLASS SEDAN warning

Engine
Warning/indicator lamp
Possible causes/consequences and MSolutions
;
Engine diagnosiswarning
lamp The
yellow engine diagnosis warning lamp is lit while the engine is running.
A malfunction has occurr ed inthe engine, theex haust sy stem or the fuel sy stem.
The emissions limit values may be exceeded and the engine may be running in emergency operation mode.
In some states, legal requ irements stipulate that you must immediately consult a qualified specialist workshop as soon
as theye llow engine diagnosis warning lamp lights up.
#Ha ve theve hicle checked as soon as possible at a qualified specialist workshop.
#
Electrical malfunction warn‐
ing lamp The
red electri cal malfunction warning lamp is lit.
There is a malfunction in the electrics.#Obser vethe messages in the multifunction displa y.
8
Fuelreser vewarning lamp The
yellow fuel reser ve wa rning lamp lights up while driving.
There has been pressure loss in the fuel sy stem. The fuel filler cap is not closed cor rectly or the fuel sy stem is leaking.#Close the fuel filler cap.
#If th e fuel filler cap was already proper lyclosed: consult a qualified specialist workshop.
Display messages and warning/indicator lamps 51
3

Warning/indicator lamp
Possible causes/consequences and MSolutions
8
Fuelreser ve wa rning lamp The
yellow fuel reser vewarning lamp is lit while the engine is running.
The fuel le vel has dropped into there ser verange.#Re fuel.
514
Displ aymessage s andwarning/indicator lamps

Warning/indicator lamp
Possible causes/consequences and MSolutions
?
Coolantwarning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes are:RThe temp erature sensor is malfunctioning
RCoolant le velto o low
RThe air supply tothera diator is obstructed
RThe radiator fan is de fective
If th ere is an additional warning tone, the coolant temp erature has exceeded the maximum permissible temp erature.
&
WARNING Danger of burn s when opening the hood
If yo u open the hood when the engine has overheated or during a fire inthe engine compartment, you could come
into contact with hot gases or other escaping operating fluids.
#Before opening the hood, allow the engine tocool down.
#Intheeve nt of a fire inthe engine compartment, keep the hood closed 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 in 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.
Display messages and warning/indicator lamps 51
5

Warning/indicator lamp
Possible causes/consequences and MSolutions
Otherwise:
#Lea vetheve hicle and keep a safe dis tance from theve hicle until the engine has cooled down.
#Check the coolant le vel .
#Make sure that the air supply tothera diator is not obstructed.
#Av oiding high loads on the engine, drive on tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below there d area.
51 6
Displ aymessage s andwarning/indicator lamps

Tire s
Wa rning/indicator lamp
Possible causes/consequences and MSolutions
h
Tire pressure monitoring
sy stem warning lamp lights
up The
yellow tire pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
The tire pressure monitoring sy stem has de tected tire pressure loss in at least one of the tires.&
WARNING Risk of an accident due toinsuf ficient tire pressure
Ti re pressures that are too low pose thefo llowing hazards:
RThe tires may bur st, especially as the load and vehicle speed increase.
RThe tires may wearexc essively and/or une venly, which may greatly impair tire traction.
RThe driving characteristics, as well as steering and braking, may be greatly impaired.
Yo u could then lose control of theve hicle.
#Obser vethere commended tire pressure.
#Ad just the tire pressure if necessar y.
#Stop theve hicle, paying attention toroad and traf fic conditions.
#Check the tire pressure and the tires.
Display messages and warning/indicator lamps 51
7

Warning/indicator lamp
Possible causes/consequences and MSolutions
h
Tire pressure monitoring
sy stem warning lamp
fl ashes The
yellow tire pressure monitoring sy stem warning lamp (pressure loss/malfunction) flashes for app roxima tely one
minute and then remains lit.
The tire pressure monitoring system is malfunctioning.&
WARNING Thereis arisk of an accident if the tire pressure monitoring sy stem is malfunctioning
If th e tire pressure monitoring sy stem is malfunctioning, it is not able toissue a warning if there is pressure loss in
one or more of the tires.
Un derinflated tires ma y,forex ample, impair the driving, steering and braking characteristics.
#Ha ve the tire pressure monitoring sy stem checked at a qualified specialist workshop.
#Consult a qualified specialist workshop.
51 8
Displ aymessage s andwarning/indicator lamps

Rear (luxury head restra int) ................ .104
Re ar (setting the last position) ............ .103
Head-up Display ...................................... 253
Ad justing brightness (on-board com‐
pu ter) .................................................. 253
Ad justing display elements (on-board
compu ter) ............................................ 253
Fu nction .............................................. 254
Menu (on-board compu ter) .................. 253
Setting the position (on-board com‐
puter) .................................................. 253
Switching on/off ................................. 255
Using the memory function .................. 113
Headlamp flashing .................................. 144
Headliner (care) ....................................... 390
Headphones (Rear Seat Entertain‐
ment Sy stem)
Ac tivating/deactivating .......................3 65
Ad justing thevo lume .......................... .365
Overview ............................................. 364
Re placing batteries ............................ .365
Selecting a rear passenger compart‐
ment display ........................................ 365 High beam
Swit ching on/off ................................ .144
High-beam headlamps Adaptive Highbeam Assist .................. .146
Hill start assist ........................................ 210
HOLD function ......................................... 210
Fu nction/no tes ............ ........................
210
Sw

itching on/off ................................. 210
Hood Function (active hood) ......................... 378
Opening/closing ..................................3 78
Re setting (active hood) ........................ 378
Hotspot Setting up (Wi-Fi) ................................. 281
Hydropneumatic suspension see MAGIC BODY CONTROL
I
Identification plate Engine .................................................4 45
Re frigerant .......................................... 453
Ve hicle ................................................ 445 Ignition
Swit ching on (s tart/s top button) ........ .165
Ignition key
see SmartK ey
Immobilizer ................................................ 86
Indicator lamp see Warning/indicator lamps
Individual drive prog ram
Confi guring .......................................... 173
Selecting .............................................. 173
Instrument clus ter
see Instrument display
see Warning/indicator lamps
Instrument display .................................. 244
Ad justing the lighting ........................... 247
Fu nction/no tes ................................... 244
Overview ............................................. 244
Wa rning and indicator lamps (o verview) .. 8
Wa rning/indicator lamps .................... .501
Instrument lighting .................................247
Intelligent Light Sy stem
Cornering light function ...................... .146
Inter changing wheels .............................4 35
Index535

L
Labeling (tires) see Tire labeling
Laden Bag hook ............................................ .124
No tes ................................................... 118
Ro ofrack ............................................. 128
St ow age space under the trunk floor ... 127
Lamp see Inte rior lighting
Lamp (Instrument Display) see Warning/indicator lamps
Lane Keeping Assist
see Active Lane Keeping Assist
Language Notes .................................................. 283
Setting .................................................2 83
LA TC H-type (ISOFIX) child seat
attachment
Installing ................................................ 51
No tes ..................................................... 50
Le vel control sy stem
see AIR BODY CONTROL see MAGIC
BODY CONTROL
Light switch Overview .............................................1 43
Lighting see Lights
Lights ........................................................ 143
Ad aptive Highbeam Assist .................. .146
Ad justing the instrument lighting ......... 247
Au tomatic driving lights ....................... 144
Combination switch .............................144
Corne ring light function ....................... 146
Hazard warning lights .......................... 145
Headla mpflashing .............................. .1
44
Hi

gh beam ........................................... 144
Light switch .........................................1 43
Low beam ............................................ 143
Pa rking lights ...................................... .143
Re ar fog light ....................................... 144
Re sponsibility for lighting sy stems ...... 143
Setting the sur round lighting .............. .147
St anding lights .................................... .143
Tu rn signal light ................................... 144
Limited Warranty
Ve hicle .................................................. 26 Live
Traf fic Information
Displaying subscri ption information .... 307
Displaying the tra ffic map .................. .307
Displ aying traf fic incidents .................. 308
Extending a subscription ..................... 307
Issuing hazard alerts ........................... 309
Load index (ti res) .................................... 428
Load-bearing capacity (tires) ................. 428
Loading Definitions ...........................................4 30
Loading guidelines ................................... 118
Loading information table ...................... 420
Loads Securing .............................................. .118
Locking/unlocking KEYLESS-GO .................................... ...
... 63
Un locking and opening doors from
th e inside ............................................. .62
Low beam Swit ching on/off ................................ .143
Lu bricant additives
see Additives
Index 537