2018 MERCEDES-BENZ S-CLASS COUPE engine

SmartKey
Displaymessages
Possible causes/consequences and MSolutions
Â
Obtain a New Key*T
he SmartK eyneeds tobe replaced.
#Visit a qualified specialist workshop.
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Replace Key Battery *T
he SmartK eybattery is dischar ged.
#Re place the battery .
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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 eyinthestow age compartment .
Display messages and warning/indicator lamps 433

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 you when you lea vetheve hicle.
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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.
434
Display messages and warning/indicator lamps

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.
Displaymessage s andwarning/indicator lamps 435

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.
Display messages and warning/indicator lamps 437

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.
440
Displ aymessage s andwarning/indicator lamps

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.
Display messages and warning/indicator lamps 44
1

Displaymessages
Possible causes/consequences and MSolutions
K
Start Engine See Opera-
tor's Manual*T
he on-board electrical sy stem voltage is too lo w.
#Start the engine.
K
Convertible Top Operation
Possible to 37 mph *I
fyo udriv e at speeds of more than 37 mph(6 0 km/h) you cannot open or close the soft top.
#Do not drive at speeds greater than 37 mph(6 0 km/h).
#Fu lly open or close the soft top.
K
Convertible Top Lowering *T
he soft top is not fully opened or closed. The hydraulics are depressurizing.
#Fu lly open or close the soft top.
J
Trunk Partition Open *T
he trunk partition is open.
#Close the trunk partition.
Display messages and warning/indicator lamps 44
3

Displaymessages
Possible causes/consequences and MSolutions
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
7