2018 MERCEDES-BENZ S-CLASS COUPE service

Displaymessages
Int roduction
Note s on display messages
Display messages appear on the multifunction
displa y.
Displ aymessage s with graphic symbols are sim‐
plified in the Operator's Manual and may dif fer
from the symbols on the multifunction displa y.
The multifunction display sho wshigh-priority dis‐
play messages in red. Cer tain display messages
are accompanied byawa rning tone.
Please respond in accordance with the display
messages and follow the additional no tes in this
Opera tor's Manual.
Fo r some display message s, a symbol is also
shown:
R¤ Further information
RO Hide display message
Yo u can select the desired symbol byswiping
left or right on the left-hand Touch Control.
Press the¤ symbol toshow fur ther informa‐
tion on the multifunction displa y.Press theO
symbol tohide the display message.
Yo u can hidelow- priority display messages by
pressing the¤ button or the left-hand Touch
Control. The display messages arethen stored in
th e message memor y.
Re ctify the cause of a display message as
qu ickly as possible.
High-priority display messages cannot be hid‐
den. The multifunction display sho ws these dis‐
play messages continuously until the cause of
th e display message has been rectified. Calling up
stored displ aymessages
On-boa rdcompute r:
,Service.1 Message
If th ere are no display messages, No Messages
appears on the multifunction displa y.
#Scrollthro ugh the display messages byswip‐
ing upwards or down wards on the left-hand
To uch Control.
#To exitth e message memor y:press the
¤ button.
Display messages and warning/indicator lamps 403

Displaymessages
Possible causes/consequences and MSolutions
Active Brake Assist Func-
tions Currently Limited See
Operator's Manual *
Ve hicles with the Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE
®PLUS are temp orarily una vailable or only partially available.
Ve hicles without the Driving Assistance pa ckage: Active Brake Assi stistemp orarily una vailable.
The ambient conditions are outside the sy stem limitations .
#Drive on.
As soon as the ambient conditions are within the sy stem limitations, the sy stem will become available again.
#Ifth e display message does not disappear, stop theve hicle while paying attention toroad and traf fic conditions
and restart the engine.
Active Brake Assist Func-
tions Limited See Opera-
tor's Manual *
Ve hicles with Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE
®PLUS is malfunctioning.
Ve hicles without the Driving Assistance Package: Active Brake Assi stis malfunctioning.
#Visit a qualified specialist workshop.
PRE-SAFE Inoperative See
Operator's Manual *
PRE‑SAFE
®functions are malfunctioning.
#Visit a qualified specialist workshop.
Mercedes me connect
Services Limited See Oper-
ator's Manual *S
ervice limited.
At least one of the mbrace sy stem's main features is malfunctioning.
#Observ eth e no tes on the diagnostics connection .
#Visit a qualified specialist workshop.
41 4
Displ aymessage s andwarning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
6
SRS Malfunction Service
Required*T
herestra int sy stem is defective .
&
WARNING Risk of injury orfata l injury due toa malfunction in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or
might not be triggered at all in theeve nt of an accident. This may af fect the Emer gency Tensioning Device or
airbag, forex ample.
#Ha ve there stra int sy stem checked and repaired immediately at a qualified specialist workshop.
De tection of a restra int sy stem malfunction:
RThe 6 restra int sy stem warning lamp does not light up when the ignition is switched on.
RThe 6 restra int sy stem warning lamp lights up continuously or repeatedly during a journe y.
#Visit a qualified specialist workshop immediatel y.
416
Displ aymessage s andwarning/indicator lamps

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
Service Required Do Not
Shift Gears Visit Dealer *T
he transmission is malfunctioning. The transmission position can no longer be shif ted.
#When the transmission is in position h, consult aqualified specialist workshop and do not shift the transmis‐
sion position.
#Fo r all other transmission positions, park theve hicle safely.
#Consult a qualified specialist workshop or breakdown service.
d
Vehicle Operational Switch
the Ignition Off Before Exit-
ing *Y
ou are leaving theve hicle when it is in a ready-to-drive state.
#When you lea vetheve hicle, switch off the ignition and take the SmartK eywith you.
#Ifyo udo not lea vetheve hicle, switch off the electrical consumers, e.g. the seat heating. Otherwise, the12 V
battery might dischar geand it will then only be possible tostart theve hicle using a donor battery (s tarting
assis tance).
Transmission Malfunction
Stop *
The transmission is malfunctioning. The transmission shift sto position iautomaticall y.
#Pullover and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
#Before le aving theve hicle, apply the electric parking brake.
#Switch the transmission toposition j.
#Consult a qualified specialist workshop.
Reversing Not Possible
Service Required *T
he transmission is malfunctioning. Reversege ar can no longe r be engaged.
#Visit a qualified specialist workshop.
436
Display messages and warning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
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 injury and 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.
#Openthe window toensure that there is an adequate supply of fresh air.
#Visit a qualified specialist workshop immediatel y.
Ð
Steering Malfunction Drive
Carefully Service Required *T
he po wer assi stance of thesteering is malfunctioning. You may need touse more forc eto steer.
#Drive on carefull y.
#Visit a qualified specialist workshop.
438
Display messages and warning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
A
Malfunction Service
Required*T
heroll bars are defective.
#Visit a qualified specialist workshop immediatel y.
K
Open/Close Convertible
Top Completely *T
he soft top is not loc ked. If youdr ive at speeds of more than 37 mph (60 km/h) you cannot open or close the soft
to p.
#Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
#Push or pull and hold the soft- top switch until the soft top is fully open or closed.
Lights
Display messages
Possible causes/consequences and MSolutions
b
Example:Check Left Low
Beam *T
he cor responding light source is defective.
#Visit a qualified specialist workshop.
% LED light bulbs: the display message forth e cor responding lamp only appears when allthe light-emitting diodes
in the lamp ha vefailed.
444
Displaymessage 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.
460
Display messages and warning/indicator lamps