2018 MERCEDES-BENZ S-CLASS CABRIOLET Owner's Manual

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

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 supply has dropped into there ser verange.#Re fuel.
Display message s andwarning/indicator lamps 457

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.
#Pull over and stop theve hicle safely and switch off the engine, paying attention toroad and traf fic conditions. Do
not continue 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.
458
Display messages and warning/indicator lamps

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.
Display messages and warning/indicator lamps 459

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

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.
Display messages and warning/indicator lamps 461

1,2, 3 ...
12 V battery ............................................. 353
Re placing ............................................ 353
12 V sock et
see Soc ket (12 V)
360° Camera ........................................... 187
Assigning as a favo rite ......................... 190
Care .................................................... 338
Fu nction .............................................. 187
Selecting a view ................................... 190
A
A/C function Activating/deactivating (multimedia
sy stem) ................................................ 121
Switching on/off (control panel) .......... 121
ABS (Anti-lock Brake Sy stem) ................ .151
Ac celeration
see Kickdown
Ac cess data
Editing ................................................ .299
Setting ................................................. 298 Ac
oustic locking verification signal
Ac tivating/deactivating ......................... 58
Ac tive Blind Spot Assi st......................... 202
Ac tivating/deactivating .......................2 04
Brake application ................................. 203
Fu nction .............................................. 202
Sy stem limitations .............................. .202
Ac tive Brake Assi st
Fu nction/no tes ................................... 155
Setting ................................................. 159
Ac tive Di stance Assist DI STRONIC........ 162
Ac tive Emergency Stop Assist .............. 171
Ac tive Lane Change Assi st.................. 169
Callin g up a speed .............................. .163
Display s inthe Instrument Display ...... .171
Fu nction .............................................. 162
Increasing/decreasing speed ..............1 63
Re quirements ...................................... 163
Ro ute-based speed adap tation ............1 66
St eering wheel buttons ........................ 163
St oring a speed ... ................................
163
Sw

itching off/deacti vating .................. 163
Switching on/activating ...................... 163
Sy stem limitations .............................. .162 Ac
tive Eme rgency Stop Assist ................ 171
Ac tive hood (pedestrian pr otection) ...... 328
Me thod of operation ............................3 28
Re setting ............................................. 328
Ac tive Lane Change Assi st
Ac tivating/deactivating .......................1 71
Fu nction .............................................. 169
Ac tive Lane Keeping Assist .................... 205
Fu nction .............................................. 205
Sensitivity (function/no tes) ................. 207
Setting the sensitivity .......................... 207
Switching on/off ................................. 206
Sy stem limitations .............................. .205
Ac tive Parking Assist .............................. 190
Cr oss Traf fic Alert ................................ 195
Drive AwayAssist ................................ 194
Exiting a pa rking space ........................ 193
Fu nction .............................................. 190
Pa rking ................................................ 192
Sy stem limitations .............................. .190
Ac tive Speed Limit Assi st............... 165, 199
Displ ay................................................. 165
Fu nction .............................................. 165
Setti
ng ................................................. 199
462
Index