MERCEDES-BENZ S-CLASS SEDAN 2018 Owner's Manual
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Displaymessages
Possible causes/consequences and MSolutions
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heradar sensor sy stem is malfunctioning. Possible causes are:
RSoiling of the sensors
RHeavy rain
REx tended country driving wi thout moving traf fic, e.g. in the desert
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, driving sy stems and driving saf etysy stems are 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 all sensors .
#Restart the engine.
Display messages and warning/indicator lamps 469
Page 472 of 562
Displaymessages
Possible causes/consequences and MSolutions
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heradar sensor sy stem is malfunctioning. Possible causes are:
RSoiling of the sensors
RHeavy rain
REx tended driving on inter-urban roads without moving traf fic, e.g. in the desert
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, driving sy stems and driving saf etysy stems are 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 all sensors .
#Restart the engine.
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Displ aymessage s andwarning/indicator lamps
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Displaymessages
Possible causes/consequences and MSolutions
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herestra int sy stem is faulty .
&
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.
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Displaymessages
Possible causes/consequences and MSolutions
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he front passenger air bag and knee air bags are enabled during the journey:
Reve n when a child, a small adult or an object weighing less than the sy stem weight thre shold is located on the
front passenger seat
Reve n when the front passenger seat is not occupied
The sy stem may de tect objects or forc es that are adding tothewe ight applied tothe seat.
&
WARNING Risk of injury orfata l injury when using a child restra int sy stem while the front passenger air bag
is enabled
If yo u secure a child in a child restra int sy stem on the front passenger seat and the front passenger air bag is
enabled, the front passenger air bag can deploy in theev ent of an accident.
The child could be stru ck bythe air bag.
#Ensure, bo thbefore and during the journe y,that thest atus of the front passenger air bag is cor rect.
NEVER use a rear wa rdfacing child restra int on a seat pr otected byan ACTIVE FRONT AIR BAG; DE ATH or SERI‐
OUS INJU RYtotheCH ILD can occur.
#Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
#Check thest atus of the automatic front passenger air bag shutoff .
#If necessar y,consult a qualified specialist workshop immediatel y.
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Displ aymessage s andwarning/indicator lamps
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Displaymessages
Possible causes/consequences and MSolutions
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he front passenger air bag and the knee air bag are deactivated, eventh ough an adult or a person of a cor re‐
sponding stature is seated on the front passenger seat. If additional forc es are applied tothe seat, thewe ight the
sy stem de tects may be too lo w.
&
WARNING Risk of injury orfata l injury due toa disabled front passenger airbag
If th e front passenger airbag is disabled, the front passenger airbag will not be deplo yed in theev ent of an acci‐
dent and cann otper form its intended pr otective function.
A person in the front passenger seat could then, forex ample, come into con tact wi th theve hicle's interior,
especially if the person is sitting too close tothe cockpit.
#Make sure, bo thbefore and during the journe y,that thest atus of the front passenger airbag is cor rect.
#Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
#Check thest atus of the automatic front passenger air bag shutoff .
#If necessar y,consult a qualified specialist workshop immediatel y.
Displaymessage s andwarning/indicator lamps 47
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Drivingsy stems
Display messages
Possible causes/consequences and MSolutions
À
$ 7 7 ( 1 7 , 2 1 $ 6 6 , 6 7 7 D N H D
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TTENTION ASSIST has de tected fatigue or an increasing la ckof concentration on the part of the driver
(
→page 232).
#If necessar y,take a break.
À
$ 7 7 ( 1 7 , 2 1 $ 6 6 , 6 7 , Q R S H U
D W L Y H *A
TTENTION ASSIST is malfunctioning.
#Visit a qualified specialist workshop.
É
9 H K L F O H 5 L V L Q J *Y
our vehicle is adjusting tothe le velyo u ha veselected.
É
9 H K L F O H 5 L V L Q J 3 O H D V H : D L W *T
hevehicle le vel is too low and theve hicle rises tothe selected vehicle le vel.
#Wa it until the display message disappears before pulling away.
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Displaymessages
Possible causes/consequences and MSolutions
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ou ha vepulled away despite theve hicle le vel being too lo w.
#Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
The vehicle rises tothe selected vehicle le vel.
#Wa it until the display message disappears before pulling away.
If th e display message does not disappear and a warning tone also sounds, AIR BODY CONTROL is malfunctioning:
#Do not drive fasterthan 50 mph (80 km/h) and consult a qualified specialist workshop immediatel y.
* NO
TEThe tires of the front axle or the front fende rscould be damaged bylarge steering mo vements
#Av oid large steering mo vements while driving and lis tenfo r scraping sounds.
#If yo u hear scra ping sounds, pull over and stop theve hicle safely, paying attention toroad and traf fic con‐
ditions, and set a higher vehicle le vel if possible.
#Set a higher vehicle le vel .
Depending on the malfunction, theve hicle is raised.
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Displaymessages
Possible causes/consequences and MSolutions
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he AIR BODY CONTROL function is restricted. The vehicle's handling characteristics may be af fected.
* NO
TEThe tires of the front axle or the front fende rscould be damaged bylarge steering mo vements#Av oid large steering mo vements while driving and lis tenfo r scraping sounds.
#If yo u hear scra ping sounds, pull over and stop theve hicle safely, paying attention toroad and traf fic con‐
ditions, and set a higher vehicle le vel if possible.
#Do not drive fasterthan 50 mph (80 km/h).
#Visit a qualified specialist workshop.
$ F W L Y H / D Q H . H H S L Q J $ V V L V W
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ctive Lane Keeping Assist is temp orarily una vailable.
The ambient conditions are outside the sy stem limitations (
→page 240).
Ve hicles with Active Steering Assis t:The camera view may be restricted bythe windshield.
#Drive on.
As soon as the ambient conditions are within the sy stem limitations, the sy stem will become available again.
If th e display message does not disappear on vehicles with Active Steering Assis t:
#Pullover and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
#Clean the windshield.
$ F W L Y H / D Q H . H H S L Q J $ V V L V W
, Q R S H U D W L Y H *A
ctive Lane Keeping Assist is malfunctioning.
#Visit a qualified specialist workshop.
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Displaymessages
Possible causes/consequences and MSolutions
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ctive Blind Spot Assist istemp orarily una vailable.
The sy stem limitations ha vebeen reached (
→page 238).
#Drive on.
Once the cause of the problem is no longer present, the sy stem will be available again.
#Ifth e display message does not disappear, stop theve hicle while paying attention toroad and traf fic conditions
and restart the engine.
$ F W L Y H % O L Q G 6 S R W $ V V L V W
, Q R S H U D W L Y H *A
ctive Blind Spot Assist is malfunctioning.
#Visit a qualified specialist workshop.
$ F W L Y H % O L Q G 6 S R W $ V V W 1 R W
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hen you es tablish the electrical connection tothe trailer, Active Blind Spot Assi stis una vailable.
#Press the left-hand side of Touch Control and conf irm the display message.
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Displaymessages
Possible causes/consequences and MSolutions
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lind Spot Assist is temp orarily una vailable.
The sy stem limitations ha vebeen reached (
→page 238).
#Drive on.
Once the cause of the problem is no longer present, the sy stem will be available again.
or
#If th e display message does not disappear, stop theve hicle while paying attention toroad and traf fic conditions
and restart the engine.
#If necessar y,clean there ar bumper. If the bumper is extreme lydirty, the sensors in the bumper may be mal‐
functioning.
% O L Q G 6 S R W $ V V L V W , Q R S H U D
W L Y H *B
lind Spot Assist is malfunctioning.
#Visit a qualified specialist workshop.
Example: $ F W L Y H 3 D U N L Q J
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ctive Parking Assist was inter rupted. You ha veopened the driver's door or touched thesteering wheel, forex am‐
ple.
#St eer and brake manuall y.
$ F W L Y H 3 D U N L Q J $ V V L V W D Q G
3 $ 5 . 7 5 2 1 , & , Q R S H U D W L Y H
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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.
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Displ aymessage s andwarning/indicator lamps