MERCEDES-BENZ S-CLASS CABRIOLET 2019 Owner's Manual

Display messages
Possible causes/consequences and 0050
0050Solutions
Reversing Not Possible
Service Required #
Visit a qualified specialist workshop.
Auxiliary Battery Malfunc-
tion *T
he auxiliary batteryforth e transmission is no longer being charge d. #
Visit a qualified specialist workshop. #
Untilthen, manually set the transmission toposition 005Dbefore you swit choff the engine. #
Before leaving theve hicle, apply the electric parking brake.
N Permanently Active Risk
of Rolling Away *
While theve hicle is rolling or while you are driving, the transmission has been shif tedto position 005C. #
Depress the brake pedal tostop and, when theve hicle is stationar y,shift the transmission toposition 005D. #
Tocontinue your journe y,shift the transmission toposition 005Bor005E.
Only Shift to 'P' when Vehi-
cle is Stationary *
The transmission can only be shif tedto position 005Dwhen theve hicle is stationar y.
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 005E,005Cor005B. #
Shift the transmission toposition 005Dwhen you park theve hicle.
To Engage Transmiss. Posi-
tion R First Depress the
Brake *
You ha vetried toswitch totransmission position 005E. #
Dep ress the brake pedal. #
Shift the transmission toposition 005E.
Shift to 'P' *
Shift the selector le verto position 005D. Display messages and
warning/indicator lamps 449

Display messages
Possible causes/consequences and 0050
0050Solutions #
Pull over and stop theve hicle. #
Shift the transmission toposition 005D.
Shift to 'P' or 'N' to Start
Engine *
You ha vetried tostart the engine in transmission position 005Dor005C. #
Shift the transmission toposition 005Dor005C. Ti
res Display messages
Possible causes/consequences and 0050 0050Solutions
0077 Warning Tire Malfunction *T
he tire pressure in one or more tires has dropped suddenly. The wheel position is displa yed. &
WARNING Risk of an accident from driving wi thaflat tire
Flat tires are dangerous in thefo llowing ways:
R The tires can overheat and cause a fire.
R The driving characteristics, as well as steering and braking, may be greatly impaired.
Yo u could then lose control of theve hicle. #
Do not drive with a flat tire. #
Obse rveth e no tes on flat tires. No
tes on flat tires (→ page 356). 450
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tires.
0077 Check Tires *T
he tire pressure in one or more tires has dropped significantl y.The wheel position is displa yed. &
WARNING Risk of an accident due toinsuf ficient tire pressure
Ti re pressures that are too low pose thefo llowing hazards:
R The tires may bur st, especially as the load and vehicle speed increase.
R The tires may wearexc essively and/or une venly, which may greatly impair tire traction.
R The 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. #
Adjust the tire pressure if necessar y. #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tire pressure (→ page377) and the tires.
0077 Please Correct Tire Pres-
sure *T
he tire pressure is too low in at least one of the tires, or the tire pressure dif fere nce between the wheels is too
great. #
Check the tire pressure and add air, if necessar y. #
When the tire pressure is cor rect, restart the tire pressure monitoring sy stem (→ page 383). Display messages and
warning/indicator lamps 451

Display messages
Possible causes/consequences and 0050
0050Solutions
0077 Tire Press. Monitor Cur-
rently Unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tire pressure sensor are
re cei ved. The tire pressure monitoring sy stem is temp orarily una vailable. #
Drive on.
The tire pressure monitoring sy stem restarts automatically as soon as the cause has been rectified.
0077
Wheel Sensor(s) Missing *T
he tire pressure sensor signal is missing from one or more tire(s). The pressure of the af fected tire is not dis‐
pl ay ed. #
Have the defective tire pressure sensor replaced at a qualified specialist workshop.
0077
Tire Pressure Monitor Inop-
erative No Wheel Sensors *T
he wheels ins talled do not ha vesuitable tire pressure sensors. The tire pressure monitoring sy stem is deactivated. #
Install wheels with suitable tire pressure sensors.
0077 Tire Press. Monitor Inopera-
tive *T
he tire pressure monitoring sy stem is defective. &
WARNING Thereis a risk 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.
Und erinflated tires ma y,forex ample, impair the driving, steering and braking characteristics. 452
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions #
Have the tire pressure monitoring sy stem checked at a qualified specialist workshop. #
Visit a qualified specialist workshop.
Tires Overheated *A
t least one tire is overheating. The af fected tires are displ ayed in red. At temp eratures close tothe limit value, the
tires are displa yed in yello w. #
Drive more sl owly.
Decrease Speed *A
t least one tire is overheating. The af fected tires are displ ayed in red. At temp eratures close tothe limit value, the
tires are displa yed in yello w. &
WARNING Risk of an accident from driving wi thove rheated tires
Overheated tires may bur st, particularly at high speeds. #
Reduce speed so that the tires cool down. #
Reduce speed so that the tires cool down. Display messages and
warning/indicator lamps 453

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
00AF Replace Key Battery *T
he SmartK eybattery is dischar ged. #
Replace the battery (→ page 60).
00AF
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 eyinthe slot (→ page132).
00AF
Don't Forget Your Key *A
warning tone also sounds. This messa gereminds youto take your SmartK eywith you when you lea vetheve hicle. Display messages and
warning/indicator lamps 455

Ve
hicle Display messages
Possible causes/consequences and 0050
0050Solutions
006F Rear Left Backrest Not
Latched (Example) *T
he cor responding rear seat backrest is not engaged. #
Foldthe cor responding seat backrest back until it engages.
006F
Front Left Seat Backrest
Not Locked (Example) *T
he seat backrest of the cor responding front seat is not engaged. #
Foldthe seat backrest back until it engages.
00CC Steering Malfunction Stop
Immediately See Opera-
tor's Manual *T
hesteering is malfunctioning Steering capability is considerably impaired. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is 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. 456
Display messages 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