2018 MERCEDES-BENZ S-CLASS CABRIOLET warning light

Seat belts
Warning/indicator lamp
Possible causes/consequences and MSolutions
7
Seat beltwarning lamp
lights up Af
terth e engine is star ted, there d seat belt warning lamp lights up for six seconds.
In addition, an acou stic wa rning tone may sound.
The seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts.#Fa sten your seat belt.
If yo u ha veplaced objects on the front passenger seat, the seat belt warning lamp may remain lit.
7
Seat belt warning lamp
fl ashes The
red seat belt warning lamp flashes and an intermitte ntwa rning tone sounds.
The driver or front passenger has not fastened their seat belt while theve hicle is in motion.#Fa sten your seat belt.
There are objects on the front passenger seat.
#Re mo vethe objects from the front passenger seat.
Driving sy stems
Wa rning/indicator lamp
Possible causes/consequences and MSolutions
à
Suspensionwarning lamp The
yellow AIR BODY CONTROL warning lamp is on.
AIR BODY CONTROL is faulty.#Obser vethe messages on the multifunction displa y.
454
Display messages and warning/indicator lamps

Warning/indicator lamp
Possible causes/consequences and MSolutions
·
Distance warning lamp The
red dis tancewarning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed.#Be prepared tobrake immediatel y.
#Increasethe dis tance.
Ac tive Brake Assi st.
Ve hicle
Wa rning/indicator lamp
Possible causes/consequences and MSolutions
Ð
Powe 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 werst eering assis tance 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 etyis jeopardized.
#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.
#Consult a qualified specialist workshop.
#Obser vethe messages in the multifunction displa y.
Displaymessage s andwarning/indicator lamps 455

Engine
Warning/indicator lamp
Possible causes/consequences and MSolutions
;
Engine diagnosiswarning
lamp The
yellow Check Engine 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 value may ha vebeen exceeded and the engine may be running in eme rgency operation mode.
In some states, legal requ irements stipulate that you must immediately consult a qualified specialist workshop as soon
as theye llow Check Engine 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 calfault warning lamp is lit.
There is a fault inthe 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 has already been closed cor rectly:
#Visit a qualified specialist workshop.
456
Display messages and warning/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.
460
Display messages and warning/indicator lamps

Handlingcharacteristics (unusual) ....... 362
HANDS-FREE ACCESS ................................ 68
Haza rdwa rning lamps ............................ .110
Head restra int .......................................... .84
Fr ont (adjusting manually) ..................... 84
Re ar (adjusting) .................................... .86
Re ar (lo wering from the front) ............... 85
Head-up Display ....................................... 217
Ad justing brightness (on-board com‐
pu ter) ................................................... 217
Ad justing display elements (on-board
compu ter) ............................................ 217
Fu nction ............................................... 218
Menu (on-board computer) .................. 217
Setting the position (on-board com‐
puter) ................................................... 217
Switching on/off ................................. 219
Using the memory function .................. .93
Headliner (care) ....................................... 339
High-beam flasher ................................... 109
High-beam flasher see Combination switch High-beam headlamps
Activating/deactivating .......................1 09
Ad aptive Highbeam Assist .................... 111
High-beam headlamps see Combination switch
Hill start assist ........................................ 173
HOLD function ......................................... 173
Ac tivating/deactivating .......................1
73
Fu ncti

on/no tes .................................... 173
Hood Function (active hood) ......................... 328
Opening/closing ................................. 328
Re setting (active hood) ........................ 328
Hotspot Setting up (Wi-Fi) ................................. 246
Hydropneumatic suspension see MAGIC BODY CONTROL
I
Identification plate Engine .................................................3 94
Re frigerant ...........................................4 01
Ve hicle ................................................ 394 Ignition
Switching on (S tart/S top button) ........ 128
Ignition key
see SmartK ey
Immobilizer ................................................ 79
Indicator lamp see Warning/indicator lamps
Individual drive prog ram
Confi guring .......................................... 136
Selecting ............................................. 136
Instrument clus ter
see Instrument display
see Warning/indicator lamps
Instrument display .................................. 208
Ad justing the lighting ........................... 211
Fu nction/no tes ................................... 208
Overview ............................................. 208
Wa rning and indicator lamps (o ver‐
view) ...................................................... 10
Wa rning/indicator lamps .................... 445
Instrument lighting .................................. 211
Intelligent Light Sy stem
Cornering light function ...................... .111
Index 47
7

Lampsee Inte rior lighting
Lamp (Instrument Display) see Warning/indicator lamps
Lane Keeping Assist
see Active Lane Keeping Assist
Language Notes ................................................... 248
Setting ................................................. 248
LA TC H-type (ISOFIX) child seat
attachment
Installing ................................................ 53
No tes ..................................................... 52
Le vel control sy stem
see AIR BODY CONTROL
see MAGIC BODY CONTROL
Light switch Overview .............................................1 08
Lighting see Lights
Lights ....................................................... 108
Ad aptive Highbeam Assist .................... 111
Ad justing the instrument lighting ......... 211 Au
tomatic driving lights ....................... 109
Combination switch............................. 109
Corne ring light function ....................... 111
Hazard warning lights .......................... 110
High-beam flasher .............................. .109
High-beam headlamp s .........................109
Light switch ......................................... 108
Low beam ............................................ 108
Pa rking lights ...................................... .108
Re ar fog light ....................................... 109
Re sponsibility for lighting sy st
ems ..
.... 108
St anding lights .................................... .108
Tu rn signal lights ................................. 109
Limited Warranty
Ve hicle .................................................. 28
Live Traf fic Information
Displaying subscri ption information .... 272
Displ aying the tra ffic map .................... 273
Displ aying traf fic incidents .................. 273
Extending a subscription ..................... 272
Issuing hazard alert s ............................2 74
Load index (tires) .................................... 377
Load-bea ring capacity (tires) .................377 Loading
Definitions .......................................... .379
Loading guidelines ....................................9 4
Loading information table ......................370
Loads Securing ................................................ 94
Locking/unlocking KEYLESS-GO .......................................... 62
Locking the doors from the inside ......... 61
Un locking and opening doors from
th e inside ............................................... 61
Low beam Swit ching on/off ................................ .108
Lu bricant addit

ives
see Additives
Lu ggage
Net hooks .............................................. 98
Securing ................................................ 94
M
MAGIC BODY CONT ROL.......................... .177
Setting ................................................. 180
Suspension .......................................... 177
Index 47
9

Parking Assist PARKTRONIC .................. 182
Ac tivating ............................................ 184
Ad justing warning tones ...................... 185
Deactivating ........................................ 184
Fu nction .............................................. 182
Side impact pr otection ........................ 183
Sy stem limitations .............................. .182
Pa rking assistance sy stems
see Active Parking Assist
Pa rking brake
see Electric parking brake
Pa rking for an extended period ..............149
Pa rking lights .......................................... .108
Pa rking position
Outside mir rors .................................... 118
St oring the position of the passenger
outside mir ror using reve rsege ar ........ 118
PA SSENGER AIR BAGstatus display
see Automatic front passenger front
airbag shutoff
Pa yload
Calculation example ............................ 372
De term ining the maximum .................. 371 Pe
destrian pr otection
see Active hood (pedestrian pr otection)
Pe rfume
see Fragrance sy stem
Pe rfume atomizer
Setting .................................................1 24
Pe rfume vial
see Fragrance sy stem
Pe riod out of use
Ac tivating/deactivating standby
mode .................................................. .150
Pe rm itted towing me thods .................. ..
.3 53
Pe rsona

lization
see User profile
Pe ts in the vehicle .....................................5 6
Phone book see Contacts
Picture form ats
see Video mode
Picture settings see Video mode PIN pr
otection
Ac tivating/deactivating .......................2 49
Plastic trim (care) ....................................3 39
Playback options Selecting ............................................. 308
POI symbols Custom ................................................ 276
Po we r closing function
Door ...................................................... 64
Tr unk lid ................................................ 66
Po we r supp ly
Switching on (S tart/S top button) ........ 128
Po we rwa sher (care) ...............................3 35
PRE-SAFE
®(anticipatory occupant
pr otection) ................................................ .47
Fu nction ................................................ 47
PRE-SAFE
®Sound ................................. 47
Re versing the measures ........................ 48
PRE-SAFE
®PLUS (anticipa tory occu‐
pant pr otection plus) ................................ 48
Fu nction ................................................ 48
Re versing the measures ........................ 48
484
Index

Video mode ............................................... 311
Ac tivating ............................................ 309
Ac tivating/deactivating full-screen
mode .................................................... 311
Overview ..............................................3 10
Settings ................................................ 311
VIN ............................................................ 394
Identification plate .............................. 394
Seat ..................................................... 394
Wi ndshield ........................................... 394
Vi sibility
Wi ndshield hea ter ................................ 125
Vi sion
Clearing fogged-up windo ws................ 123
Vo ice command types (Voice Control
Sy stem) .................................................... 221
Vo ice Control Sy stem ............................ .220
Application specifi cvo ice commands
............................................................ .221
Au dible help functions ........................ .222
Entering numbe rs................................ 222
Global voice commands ...................... .221
Impr oving speech quality .................... 222
Language setting ................................ .222 Media pla
yervo ice commands ............ 229
Message voice commands .................. 230
Multifunction steering wheel (operat‐
ing) ...................................................... 220
Na vigation voice commands ................ 224
Operable fun
ctions .............................. 221
Operating saf ety .................................. 22 0
Ra dio voice commands ...................... .228
Switch voice commands ...................... 223
Te lephone voice controls .................... .227
Te xt message voice commands .......... .230
Ty pes of voice commands .................... 221
Ve hicle voice commands .................... .231
Vo ice prom pting .................................. 221
Vo ice control sy stem
see Voice Cont rol Sy stem
W
Wa rning lamp
see Warning/indicator lamps
Wa rning sy stem
see ATA (anti-theft alarm sy stem)
Wa rning/indicator lamp
!ABS warning lamp ...................... .449 $Brake
warning lamp (USA) .......... .447
JBrakes warning lamp (Canada) .... 447
?Coolant warning lamp ................ .458
·Dis tance warning lamp ................ 455
#Elect rical malfunction warning
lamp .................................................... 456
;Engine diagnosis warning lamp .. .456
åESP
®OFF warning lamp .............. 451
÷ESP®wa rning lamp flashes ........ .449
÷ESP®wa rning lamp lights up ...... .450
8Fu elreser vewarning lamp .. 456, 457
ÐPo werst eering sy stem warning
lamp .................................................... 455
!Re d indicator lamp, elect ric
parking brake applied (Canada only) .. .452
FRe d indicator lamp, elect ric
parking brake applied (USA only) ........ 452
6Re stra int sy stem warning lamp .. .453
7Seat belt warning lamp flashes .. .454
Index 495