2018 MERCEDES-BENZ S-CLASS CABRIOLET coolant

Engine
Display messagesPossible causes/consequences and MSolutions
Check Coolant Level See
Operator's Manual *T
he coolant le vel is too lo w.
* NO
TEEngine damage duetoinsuf ficient coolant
#Av oid long journe yswith insuf ficient coolant.
#Ad d coolant .
?
Coolant Too Hot Stop Vehi-
cle Turn Engine Off *T
he coolant is too hot.
#Pull over and stop theve hicle safely and switch off the engine, paying attention toroad and traf fic conditions.
&
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.
#Wa it until the engine has cooled down.
#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
th e coolant temp erature display remains below 248 °F (120 °C).
Display message s andwarning/indicator lamps 427

Displaymessages
Possible causes/consequences and MSolutions
?
*Thefan mo tor is defective.
#Av oiding high loads on the engine, drive on tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 248 °F (120 °C).
#
Stop Vehicle See Opera-
tor's Manual *T
he battery is no longer being charge d and the battery charge leve l is too lo w.
* NO
TEPossible engine damage if you continue dr iving#Do not continue dr iving under any circum stances.
#Consult a qualified specialist workshop.
#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.
#Switch off the engine.
#Consult a qualified specialist workshop.
#
Start Engine See Opera-
tor's Manual *T
he engine is off and the battery charge leve l is too lo w.
#Switch off electrical consumers that are not required.
#Leavethe engine running for a few minutes, or drive for a longer dis tance.
The battery charge s.
428
Display messages and warning/indicator lamps

Instrument Display intheWi descreen Co ck‐
pit
Prog ressive setting (Widescreen Cockpit)
Ifyo u select the progressive display setting in
ve hicles with a Widescreen Cockpit, the position
of the indicator lamps in the Instrument Display
ch anges.
Wa rning and indicator lamps:
L Low beam (
→page
108)
T Pa
rking lights (
→page 108)
K High beam
(
→page10 9)
#! Tu
rn signal light (
→page 109)
R Re
ar fog light (
→page 108)
ü Seat belt is not
fastened
(
→page 454)
$ USA: brakes (red) (
→page
447)
J Canada
: brakes (red) (
→page 447)
! ABS malfunction (
→page
447)
÷ ESP
®(→page 447)
å ESP
®OFF (→page 447)
F US
A: electric pa rking brake applied
(red) (
→page 447) !
Canada: electric parking brake
applied (red) (
→page
447)
! Electric pa
rking brake (yellow)
(
→page 447)
Ð St
eering assis tance malfunction
(
→pa ge 455)
# Electrical
fault (
→page 456)
6 Re
stra int sy stem (
→page 447)
; Che
ckEngine (
→page 456)
8 Fu
elreser vewith fuel filler cap loca‐
tion indicator (
→page 456)
(→page 456)
? Coolant
too hot/cold (
→page 456)
· Dis
tance warning (
→page 454)
h Ti
re pressure monitoring sy stem
(
→page 460)
44 6
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.
#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

Importing ............................................. 287
Information .......................................... 285
Making a call ....................................... 287
Name form at ...................................... .286
Options ................................................ 287
St oring .................................................2 87
Controller Operating ............................................ 235
Con venience closing feature .................... 74
Con venience opening ................................ 73
Coolant (engine) Filling capacity .................................... 400
Levelch eck ......................................... 332
No tes .................................................. 400
Copyright Licenses ................................................ 32
Trademar ks............................................ 32
Co rnering light function ..........................111
Cross Traf fic Alert .................................. .195
Crosswind Assist Function/no tes ................................... 154
Crosswind Assist see MAGIC BODY CONTROL Cruise control
.......................................... 159
Buttons ................................................ 160
Callin g up a speed .............................. .160
Fu nction .............................................. 159
Re quirements: ...... ...
...........................
.160
Selecting ............................................. 160
Setting a speed ................................... 160
St oring a speed ................................... 160
Switching off ....................................... 160
Switching on ........................................ 160
Sy stem limitations .............................. .159
Cup holder ............................................... 100
Ins talling/ removing (center console) ... 100
Re ar passenger compartment .............. 101
Cus tomer Assi stance Center (C AC)........ .27
Cus tomer Relations Department .............27
D
Dashboa rd
see Cockpit
Dashboard lighting see Instrument lighting
Data acquisition Vehicle .................................................. 28 Data import/export
Function/no tes ................................... 248
Importing/exporting ............................ 248
Data storage
Electronic control units .........................2 8
Online services ...................................... 30
Ve hicle .................................................. 28
Date Setting the time and date automati‐
cally ..................................................... 243
Daytim eru nning lights ........................... .112
Ac tivating/deactivating ........................ 112
Daytim eru nning lights mode
see Daytime running lights
Deacti vating the alarm (A TA).................... 80
Declaration of conformity Wireless vehicle components ................2 5
Definitions (ti res and loading) ...............379
Design s
Men u(on-boar dco mp uter) .................. 218
Destination .............................................. 270
Editing intermedia tedestinations ........ 261
Editing the pr evious destinations ........ .271
Index 469

Active Steering Assist Cur rently
Un available See Operator's Manual .....4 25
Ac tive Steering Assist Inoperative .......4 26
Ad aptive Highbeam Assist Camera
Vi ew Restricted See Ope rator's Man‐
ual ....................................................... 445
Ad aptive Highbeam Assist Cur rently
Un available See Operator's Manual ....445
Ad aptive Highbeam Assist Inopera‐
tive ...................................................... 444
App lyBrake toShift from 'P' ............... 436
ÀAT TENTION ASSIST Inoperative ... 420
ÀAT TENTION ASSIS T:Take a
Break! .................................................. 420
bAu toLamp Function Inoperati ve
............................................................. 444
Au xilia ryBattery Malfunction .............. 438
Blind Spot Assist Currently Una vaila‐
ble See Opera tor's Manual .................. 423
Blind Spot Assist Inoperative ............... 423$
Check Brake Fluid Le vel.............. 414
Check Coolant Le vel See Operator's
Manual ................................................ 427
4Check Engine Oil AtNext Refu‐
eling .................................................... 429
hChe ckTire s ................................. 431
¥Check Washer Fluid .................... 443
?Coolant Too Hot Stop Vehicle
Tu rn Engine Off .................................... 427
Cruise Control Canceled ..................... 426
Cruise Contro
l Inoperati ve.................. 426
!Cur rently Una vailable See Oper‐
ator's Manual ...................................... 406
÷Cur rently Una vailable See Oper‐
ator's Manual ...................................... 408
ÂDon't Forget Your Key................ .435
Driver's Door Open & Transmission
No t in P Risk of Vehicle Rolling Away .. 436
bExample: Check Left Low Beam ............................................................. 443 _Example:
Front Left Seat Back‐
re st Not Loc ked .................................. 442
Fr ont Passenger Airbag Disabled See
Operator's Manual ...............................4 19
Fr ont Passenger Airbag Enabled See
Operator's Manual ...............................4 18
8Fu el Level Low ............................ 430
8Gas Cap Loose ............................ 429
!Inoperative See Opera tor's
Manual ................................................4 05
÷Inopera tive See Operator's
Manual ................................................ 407
TInope rative See Operator's
Manual ................................................ 409
GInope rative ................................... 414
ÂKe yNo tDe tected (red displ ay
message )............................................ .435
ÂKe yNo tDe tected (white dis‐
play message ).... ...
.............................
.434
Index 47
1

On-board computer................................. 209
Assis tance graphic menu ..................... 212
Displ aying the service due date ........... 327
Head-up Display menu ........................ .217
Media menu ......................................... 216
Menu designs ...................................... 218
Menu overview .................................... 209
Multifunction display ............................ 211
Na vigation sy stem menu ..................... .214
Operating ............................................ 209
Ra dio menu .......................................... 215
Service menu ....................................... 212
Te lephone menu .................................. 216
Tr ip menu ............................................ .213
On-board diagnostics inter face
see Diagno stics connection
Open-source software .............................. 32
Opening the trunk lid using your foot
HANDS-FREE ACCESS .......................... .68
Operating fluids
Ad ditives (fuel) .................................... 398
Brake fluid .......................................... .399
Coolant (engine) .................................. 400
Engine oil .......................................... .. 398Fu
el (gasoline) ..
..................................
.397
No tes .................................................. 396
Re frigerant (air conditioning sy stem) ... 401
Wi ndshield washer fluid ...................... 400
Ope rating saf ety
Declaration of conformity (wireless
ve hicle components) ............................. 25
Information ............................................ 24
Operating sy stem
see On-board computer
Operator's Manual Vehicle equipment ................................. 22
Operator's Manual (digital) ......................20
Outside mir rors ................................ 116, 117
Anti-gla remode (auto matic) ................. 117
Au tomatic mir rorfo lding function ........ 119
Fo lding in/out ...................................... 116
Pa rking position .................................. .118
Setting ................................................. 116
Using the memory function .................. .93
Overhead control panel Overview ................................................ 12
P
Pa int code ................................................ 394
Pa intwork (cleaning instructions) .........336
Pa nel heating
Setting ................................................... 89
Pa nic alarm ................................................ 58
Ac tivating/deactivating ......................... 58
Pa noramic roof
Operating thero ller sunblind ................ .76
Re setting thero ller sunblind .................. 77
Pa rcel net hooks ........................................ 98
Pa rental control
Setting ................................................ .248
Pa rk position
Selecting ............................................. 138
Selecting au tomatical ly....................... 138
Pa rking
see Electric parking brake
Pa rking aid
see Parking Assist PARKTRONI C
Pa rking Assist
Maneuvering assis tance ...................... 195
Index 483