2019 MERCEDES-BENZ S-CLASS CABRIOLET engine

SmartK
ey Display messages
Possible causes/consequences and 0050
0050Solutions
00AF 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 you swit choff the engine:
R You can no lon gerst art the engine.
R You 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 eyinthe mar ked space forst arting the engine with the SmartK ey (→page 132).
00AF Ob tain a New Key *T
he SmartK eyneeds tobe replaced. #
Visit a qualified specialist workshop.
00AF Key Not Detected (white
display message) *T
he SmartK eyis cur rently und etected. #
Change the location of the SmartK eyintheve hicle. #
Ifth e SmartK eyisstill not recognized, start the engine with the SmartK eyinthe mar ked space (→ page132). 454
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions #
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.
00CC Steering Malfunction
Increased Physical Effort
See Operator's Manual *T
he po wer assi stance forth esteering is malfunctioning. &
WARNING Risk of an accident due toaltered steering characteristics
If th e po wer assi stance of thesteering fails partially or comple tely, you will need touse more forc eto steer. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y.
Active Hood Malfunction
See Operator's Manual *T
he active hood (pedestrian pr otection) is malfunctioning or inoperative af ter having already been triggered. #
Consult a qualified specialist workshop.
0083 *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. Display messages and
warning/indicator lamps 457

Display messages
Possible causes/consequences and 0050
0050Solutions #
Stop theve hicle immediately, paying attention toroad and traf fic conditions. #
Close the hood.
0051 *A
t least one door is open. #
Close all doors.
0084 *T
he trunk lid is open. &
DANG ER Risk of exhaust 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, especial lyifth eve hicle is in motion. #
Alw ays switch off the engine before opening the trunk lid. #
Never drive with the trunk lid open. #
Close the trunk lid.
00B2
Check Washer Fluid *T
hewasher fluid le vel in thewa sher fluid reser voir has dropped below the minimum. #
Addwa sher fluid (→ page 342). 458
Display messages and warning/indicator lamps

Climate control
Displ
aymessages
Possible causes/consequences and 0050
0050Solutions
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. #
Have the climate control sy stem checked at a qualified specialist workshop.
Let fresh air into the vehi-
cle interior. Air Condition-
ing Malf. Visit Workshop *T
he climate contro l system is malfunctioning. &
WARNING Risk of inju ryand accident due toan insuf ficient supply of fresh air
If th e climate control sy stem is malfunctioning, carbon dioxide le vels may inc rease in theve hicle interior.
Breathing in carbon dioxide may cause dizziness. #
Open the window toensure that there is a suf ficient supply of fresh ai r. #
Open the window toensure that there is an adequate supply of fresh air. #
Visit a qualified specialist workshop immediatel y. Soft
top Display messages
Possible causes/consequences and 0050 0050Solutions
0059 *T
he on-board electrical sy stem voltage is too lo w. #
Start the engine. Display messages and
warning/indicator lamps 459

Display messages
Possible causes/consequences and 0050
0050Solutions #
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 will per form a self-test when the
ignition is switched on. Some warning and indi‐
cator lamps may brief lylight up or flash. This
behavior is non-critical. These warning and indi‐
cator lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y. Instrument Display Prog
ressive setting If
yo u select the progressive display setting, the
positions of the indicator lamps on the instru‐
ment display will change.
Wa rning and indicator lamps:
0058 Low beam(→
page111 )
0060 Pa
rking lights (→ page111 )
0057 High beam(→
page 112) 464
Displaymessa ges and warning/indicator lamps

003E003D
Tu
rn signal lights(→ page112)
005E Re
ar fog light(→ page111 )
0075 Re
stra int sy stem(→ page 465)
00E9 Seat belt not
fastened(→ page470)
0027 US
A: brakes (red) (→ page 465)
004D Canada: brakes (red) (→
page 465)
0024 Electric parking brake (yell
ow)
( → page 465)
0049 USA: elect
ric pa rking brake applied
(red) (→ page 465) 0024
Canada: elect
ric pa rking brake
applied (red) (→ page 465)
0025 ABS malfunctioning(→
page 465)
00E5 ESP®
(→ page 465)
00BB ESP®
OFF(→ page 465)
L Distance warning(→ page471)
00CC Po
we r-assis tedsteering malfunction‐
ing( →page 476)
00CC AIRMATIC/Active Body Control mal‐
functioning (→
page 471) 00B9
Che
ckEngine(→ page 472)
003D Electrical malfunction (→
page 472)
00B6 Fu
elreser vewith fuel filler flap loca‐
tion indicator (→ page472)
(→ page 472)
00AC Coolant
too hot/cold (→ page472)
0077 Ti
re pressure monitoring sy stem
(→ page 474) Sa
fet y sy stems Wa
rning/indicator lamp
Possible causes/consequences and 0050 0050Solutions
0027 Brake warning lamp (USA)
004D The
red brake sy stem warning lamp is lit while the engine is running.
Po ssible causes are:
R The brake forc e boosting is malfunctioning and the braking characteristics may be af fected.
R The reis insuf ficient brake fluid in the brake fluid reser voir. &
WARNING Risk of accident and inju ryif brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics may be impaired. The braking dis tance can increase in eme rgency braking situations. Display messages and
warning/indicator lamps 465

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
Brakes warning lamp (Can‐
ada) #
Stop in a safe location immediately. Do not continue driving. #
Consult a qualified specialist workshop. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel 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. #
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. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop.
0025 ABS warning 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 sy stems and driving saf ety sy stems may also malfunction. 466
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
Re d indicator lamp, elect ric
parking brake applied (Can‐
ada only)
0024 Ye llow elect ric pa rking
brake indicator lamp is mal‐
functioning
00E5
ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
At least one wheel and tire assembly has reached its traction limit (→ page156). #
Adapt your driving style to suit thero ad and weather conditions.
00E5 ESP ®
wa rning lamp lights
up The
yellow ESP ®
wa rning lamp is lit while the engine is running.
ESP ®
is malfunctioning
Other driving sy stems and driving saf ety sy stems may also malfunction. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilization. In addition, other driving saf ety sy stems are
switched off. 468
Display messages and warning/indicator lamps