engine MERCEDES-BENZ S-CLASS CABRIOLET 2018 Manual Online

Displaymessages
Possible causes/consequences and MSolutions
Â
Key Not Detected(red dis‐
play message) *T
he SmartK eycannot be de tected and may no longer be in theve hicle.
The SmartK eyis no longer in theve hicle and youswit choff the engine:RYo u can no longe rst art the engine.
RYo u cannot centrally lock theve hicle.
#Ensure that the SmartK eyis in theve hicle.
If th e SmartK eydetection function has a malfunction due toast ro ng radio signal source:
#Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
#Place the SmartK eyinthestow age compartment forst arting the engine with the SmartK ey.
Â
Don't Forget Your Key *A
warning tone also sounds. This message reminds youto take your SmartK eywith youwhen you lea vetheve hicle.
Â
Place the Key in the
Marked Space See Opera-
tor's Manual *T
he SmartK eydetection function is malfunctioning.
#Change the location of the SmartK eyintheve hicle.
#Start theve hicle with the SmartK eyinthestow age compartment.
Display messages and warning/indicator lamps 435

Vehicle
Display messages
Possible causes/consequences and MSolutions
Apply Brake to Shift from
'P' *
Yo u ha veattem ptedto shift the transmission out of position jand into ano ther transmission position.
#Depress the brake pedal.
To Deselect P or N,
Depress Brake and Start
Engine *
Yo u ha veattem ptedto shift the transmission out of position jori into ano ther transmission position.
#Depress the brake pedal.
#St art the engine.
Driver's Door Open &
Transmission Not in P Risk
of Vehicle Rolling Away *
The driver's door is not fully closed and the transmission is in position k,iorh.
#Shift the transmission toposition jwhen you park theve hicle.
N Permanently Active Risk
of Rolling Away *
While theve hicle is rolling or while you are driving,the transmission has been shif tedto position i.
#Depress the brake pedal tostop and, when theve hicle is stationar y,shift the transmission toposition j.
#Tocontinue your journe y,shift the transmission toposition hork.
Only Shift to 'P' when Vehi-
cle is Stationary *
The transmission can only be shif tedto position jwhen theve hicle is stationar y.
436
Display messages and warning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
Stop Vehicle Leave Engine
Running Wait Transmission
Cooling *T
he transmission has overheated. Pulling away can be temp orarily impaired or not possible.
#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.
#Lea veengine running.
#Wa it until the display message disappears before pulling away.
Auxiliary Battery Malfunc-
tion *T
he auxiliary batteryforth e transmission is no longer being charge d.
#Visit a qualified specialist workshop.
#Un tilthen, alw ays manually set the transmission toposition jbefore youswit choff the engine.
#Before leaving theve hicle, apply the electric parking brake.
Air Conditioning Malfunc-
tion See Operator's Manual *O
peration of the climate control sy stem is temp orarily restricted. Air flow and fresh air supply are set toautomatic
mode.
#Ha ve the climate control sy stem checked at a qualified specialist workshop.
438
Display messages and warning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
Active Hood Malfunction
See Operator's Manual *T
he active hood (pedestrian pr otection) is malfunctioning or inoperative af ter having already been triggered.
#Vi sit a qualified specialist workshop.
M
*T he hood is open.
&
WARNING Risk of accident if the engine hood is unlatched while driving
An unloc ked engine hood may open up when theve hicle is in motion and block your vie w.
#Never unlatch the engine hood while driving.
#Before every trip, ensure that the engine hood is latched.
#Pull over and stop theve hicle safely as soon as possible.
#Close the hood.
C
*A t least one door is open.
#Close all doors.
Displ aymessage s andwarning/indicator lamps 44
1

Displaymessages
Possible causes/consequences and MSolutions
N
*The trunk lid is open.
&
WARNING Risk ofexhaust gas poisoning
Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the
ve hicle interior if the trunk lid is open when the engine is running, especially if theve hicle is in motion.
#Alw ays switch off the engine before opening the trunk lid.
#Ne ver drive with the trunk lid open.
#Close the trunk lid.
Shift to 'P' or 'N' to Start
Engine *
You ha vetried tostart the engine in transmission position jori.
#Shift the transmission toposition jori.
To Engage Transmiss. Posi-
tion R First Depress the
Brake *
Yo u ha veattem ptedto shift the transmission out of position hand into transmission position k.
#Depressthe brake pedal.
#Switch the transmission toposition k.
_
Example:Front Left Seat
Backrest Not Locked *T
he seat backrest of the cor responding front seat is not engaged.
#Push the seat backrest back until it engages.
44 2
Displ aymessage s andwarning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
Adaptive Highbeam Assist
Currently Unavailable See
Operator's Manual *A
daptive Highbeam Assist is temp orarily una vailable.
The sy stem limitations ha vebeen reached (
→page 111).
#Drive on.
Once the cause of the problem is no longer present, the sy stem will be available again. The Adaptive Highbeam
Assist Now Available display message appears.
Adaptive Highbeam Assist
Camera View Restricted
See Operator's Manual *T
he camera view is restricted. Possible causes are:
Rdirt on the windshield in the camera's field of vision
Rheavy rain, snow or fog
Driving sy stems and driving saf etysy stems may be malfunctioning or temp orarily una vailable.
Once the cause of the problem is no longer present, the driving sy stems and driving saf etysy stems will be available
again.
If th e display message does not disappear:
#Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
#Clean the windshield.
Wa rning and indicator lamps
Overview of warning and indicator lamps
Some sy stems per form a self-test when the igni‐
tion is switched on. Some warning and indicator lamps may briefly light up or
flash. This behavior
is non-critical. These warning and indicator
lamps only indicate a malfunction if they light up
or flash af terth e engine is star ted or during a
journe y.
Displaymessage s andwarning/indicator lamps 44
5

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

Safety sy stems
Wa rning/indicator lamp
Possible causes/consequences and MSolutions
$
Brakewarning lamp (USA)
J
Brakes warning lamp (Can‐
ada) The
red brake sy stem warning lamp is lit while the engine is running.
Po ssible causes are:
RThe brake forc e boosting is malfunctioning and the braking characteristics may be af fected.
RThere is insuf ficient brake fluid inthe brake fluid reser voir.
&
WARNING Thereis arisk of an accident if brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. Braking char‐
acteristics may be impaired. The braking dis tance in an emergency braking situation can increase.
#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.
&
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid leve l is too lo w,the braking ef fect and the braking characteristics may be impaired.
#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.
Do not add brake fluid.
Display messages and warning/indicator lamps 44
7

Warning/indicator lamp
Possible causes/consequences and MSolutions
!
ABSwarning lamp The
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 and driving safe ty systems may also be faulty.
&
WARNING Thereisrisk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning, the wheels could lock when braking
The steering capability and braking characteristics are thus se verely impaired .Th ebr aking dis tance in an emer‐
ge ncy braking situation can increase. In addition, other driving saf etysy stems are switched off.
#Drive on carefull y.
#Have the brake sy stem checked immediately at a qualified specialist workshop.
#Drive on carefully.
#Obser vethe messages in the multifunction displa y.
#Visit a qualified specialist workshop.
÷
ESP®wa rning lamp flashes The
yellow ESP
®wa rning lamp flashes while theve hicle is in motion.
ESP
®is inter vening.
#Ad apt your drivin gst yle to suit thero ad and weather conditions.
Display messages and warning/indicator lamps 44
9

Warning/indicator lamp
Possible causes/consequences and MSolutions
÷
ESP®warning lamp lights
up The
yellow ESP
®wa rning lamp is lit while the engine is running.
ESP
®is malfunctioning.
Other driving and driving safe ty systems may also be malfunctioning.
&
WARNING Risk of skidding if ESP®is malfunctioning
If ESP
®is malfunctioning, ESP®cannot car ryout vehicle stabilization. In addition, other driving saf etysy stems are
switched off.
#Drive on carefull y.
#Have ESP®checked at a qualified specialist workshop.
#Drive on carefully.
#Obser vethe messages in the multifunction displa y.
#Consult aqualified specialist workshop.
450
Display messages and warning/indicator lamps