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

Displaymessages
Possible causes/consequences and MSolutions
Active Parking Assist and
PARKTRONIC Inoperative
See Operator's Manual *A
ctive Parking Assist and Parking Assist PARKTRONI Caremalfunctioning .
#Stop theve hicle, paying attention toroad and traf fic conditions, and restart the engine.
#Ifth e display message continues tobe displa yed, consult a qualified specialist workshop.
Traffic Sign Assist Inopera-
tive *T
raffic Sign Assist is malfunctioning.
#Vi sit a qualified specialist workshop.
Traffic Sign Assist Cur-
rently Unavailable See
Operator's Manual *T
raffic Sign Assist is temp orarily una vailable.
#Drive on.
Once the cause of the problem is no longer present, the sy stem will be available again.
Traffic Sign Assist Camera
View Restricted See Opera-
tor'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.
Display messages and warning/indicator lamps 423

Displaymessages
Possible causes/consequences and MSolutions
ë
Off*T
he HOLD function is deactivated because theve hicle is skidding or a condition for activation is not met.
#Re activate the HOLD function later or check the activation conditions forth e HOLD function .
Active Distance Assist Now
Available *A
ctive Dis tance Assist DISTRONIC is operational again and can be acti vated (
→page 164).
Active Distance Assist Cur-
rently Unavailable See
Operator's Manual *A
ctive Dis tance Assist istemp orarily una vailable.
The ambient conditions are outside the sy stem limitations(
→page 162).
#Drive on.
As soon as the ambient conditions are within the sy stem limitations, the sy stem will become available again.
Active Distance Assist Inop-
erative *A
ctive Dis tance Assist is malfunctioning.
Other driving sy stems and driving saf etysy stems may also malfunction.
#Vi sit a qualified specialist workshop.
Active Steering Assist Cur-
rently Unavailable See
Operator's Manual *A
ctive Steering Assist is temp orarily una vailable.
The ambient conditions are outside the sy stem limitations (
→page 168).
#Drive on.
As soon as the ambient conditions are within the sy stem limitations, the sy stem will become available again.
#If necessar y,clean the windshield in the camera's field of vision.
424
Display messages and warning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
Active Steering Assist Inop-
erative *A
ctive Steering Assist is malfunctioning. Active Dis tance Assist remains available.
#Visit a qualified specialist workshop.
¯- - - mph *C
ruise control cannot be activated as not all activation conditions are fulfilled.#Obser vethe activation conditions for cruise control .
Cruise Control Canceled *C
ruise control has been deactivated.
If th ere is an additional warning tone, cruise control has been switched off au tomatical ly(
→page 160)
(→pag e16 0).
Cruise Control Inoperative *C
ruise control is malfunctioning.
#Visit a qualified specialist workshop.
Lowering *T
hevehicle le vel may be lo weredfo rth efo llowing reasons:
Ryo u ha veselected a dif fere nt drive program.
Ryo u ha veexc eeded a critical speed.
Ryou ha vechanged theve hicle le velby pressing a button.
Max. Speed 22 mph *T
hevehicle has been set totranspo rtleve l.Tr ansport le vel is not a permissible driving le vel. Only suitable for trans‐
porting theve hicle.#Do not drive fasterthan 22 mph (35 km/h).
Display messages and warning/indicator lamps 425

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).
426
Display message s andwarning/indicator lamps

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.
Display messages and warning/indicator lamps 427

Displaymessages
Possible causes/consequences and MSolutions
#
Stop Vehicle Leave Engine
Running*T
he battery charge leve l is too low and must be charge d.
#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.
4
Check Engine Oil At Next
Refue ling *T
he engine oil le vel has dropped tothe minimum le vel.
* NO
TEEngine damage causedbydriving with insuf ficient engine oil#Av oid long journe yswith insuf ficient engine oil.
#Check the engine oil le vel when next refueling.
To p up the engine oil (
→page 327).
No tes on engine oil (
→page 397).
8
Gas Cap Loose *T
here 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 was already proper lyclosed: consult a qualified specialist workshop.
428
Display messages and warning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
8
Fuel Level Low*T
he fuel supply has dropped into there ser verange.
#Re fuel.
Tire s
Displa ymessages
Possible causes/consequences and MSolutions
h
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.
#Whenthe tire pressure is cor rect, restart the tire pressure monitoring sy stem .
Display messages and warning/indicator lamps 429

Displaymessages
Possible causes/consequences and MSolutions
h
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:
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.
430
Display messages and warning/indicator lamps