display MERCEDES-BENZ S-CLASS SALOON LONG 2020 Owners Manual

Lights
Display messages
Possible causes/consequences and M
MSolutions
: Left dipped beam (examp le) *T
he cor responding light source is defective. #
Drive on carefully. #
Consult a qualified specialist workshop immediatel y.
% LED light sources: the display message forth e cor responding light appears only when allthe light-emitting
diodes in the light are faulty.
: Malfunction See Owner's
Manual *T
heexterior lighting is malfunctioning. #
Consult a qualified specialist workshop.
* Ve hicles with a trailer hitch: a fuse may haveblown. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the fuses and replace them if necessary (/ page378).
:
Automatic driving lights
inoperative *T
he light sensor for auto matic driving lights is malfunctioning. #
Consult a qualified specialist workshop. 498
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
: Active Light System inoper-
ative *T
he active headlamp s are malfunctioning. #
Consult a qualified specialist workshop.
: Switch on headlamps *Y
ou are driving without lo w-beam headlamps. #
Turn the light switch totheL orà position.
:
Switch off lights *Y
ou are leaving theve hicle and the lights are still switched on. #
Turn the light switch totheà position.
DIGITAL LIGHT Functions
limited *T
he DIGITAL LIGHT sy stem is malfunctioning. The lighting sy stem will continue towo rkeve n wi thout the functions
of the DIGITAL LIGHT sy stem. #
Consult a qualified specialist workshop.
MULTIBEAM LED Functions
limited *T
he MULTIBEAM LED sy stem is malfunctioning. The lighting sy stem will continue towo rk, but without the functions
of the MULTIBEAM LED sy stem. Display messages and
warning/indicator lamps 499

Display messages
Possible causes/consequences and M
MSolutions #
Consult a qualified specialist workshop.
Check dipped-beam set-
ting (left/right-side traffic) *T
he type of traf fic has been selected manual ly. #
Check the setting and change it manually if necessary (/ page161).
Dipped-beam setting (left/
right-side traffic) Manual
adjustment only *T
he automatic headlamp conversion for left-hand/right-hand traf fic has malfunctioned. #
Change the headlamps over manually (/ page161).
Adaptive Highbeam Assist
Plus currently unavailable
See Owner's Manual *A
daptive Highbeam Assist Plus is temp orarily una vailable.
Once the cause of the problem is no longer present, the sy stem will be available again. The Adaptive Highbeam
Assist Plus available again display message will appear. #
Drive on. #
Operate the high beam manually until Adaptive High Beam Assist Plus is available again.
Adaptive Highbeam Assist
Plus inoperative *A
daptive Highbeam Assist Plus is malfunctioning. #
Stop theve hicle in accordance with the tra ffic conditions and restart the engine. #
Ifth e display message still appears, consult a qualified specialist workshop.
Hazard warning lamp sys-
tem Malfunction *T
he hazard warning lamp switch is malfunctioning. #
Consult a qualified specialist workshop. 500
Display messages and warning/indicator lamps

Climate control
Displ
aymessages
Possible causes/consequences and M
MSolutions
& inoperative See Owner's
Man. *T
hestationary heater is temp orarily malfunctioning. #
When theve hicle is stationary on a le vel sur face and the engine has cooled down, make up tofour attem ptsto
switch on thest ationary heater, waiting se veral minutes between each attem pt. #
Ifth est ationary heater does not swit chon, consult a qualified specialist workshop.
% The stationary heater cannot be activated if the outside temp erature is abo ve15°C.
& inoperative Battery low *T
he on-board electrical sy stem voltage is too lo w.
The stationary heater has swit ched itself off. #
Drive an extended di stance until the battery has reached a suf ficient charge leve l again.
&
Inoperative Refuel vehicle *T
here is too little fuel in the fuel tank. The stationary heater cannot be swit ched on. #
Refuel theve hicle. Display messages and
warning/indicator lamps 501

Ve
hicle Display messages
Possible causes/consequences and M
MSolutions *T
he driver display is inoperative due toafa iled software update.
The display message is shown everytime the engine is star ted. &
WARNING Risk of accident due toa driver display malfunction
If th e driver display has failed or malfunctioned, the function restrictions applying tosaf etyre leva nt sy stems are
not visible.
The operating saf ety of your vehicle may be impaired. #
Drive on carefull y. #
Have theve hicle checked immediately at a qualified specialist workshop. If
th e operating saf ety of your vehicle is impaired, park theve hicle immediately and safely. Contact a qualified spe‐
cialist workshop.
If th e driver display fails, you may not recognise function restrictions af fecting sy stems releva nt tosaf ety or the
speed displa y,forex ample. The operating saf ety of theve hicle may be impaired (/ page312). #
Have theve hicle checkedby aqu alified specialist workshop immediatel y.502
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
d Vehicle is operational
Switch off ignition before
exiting *Y
ou are leaving theve hicle in a ready-to-drive state. #
When you lea vetheve hicle, switch off the ignition, secure theve hicle against rolling away and take theke y with
yo u. #
Ifyo u do not lea vetheve hicle, switch off the electrical consumers, e.g. the seat heating. Otherwise, the12 V
battery may dischar geand it will then be possible tostart theve hicle only with the aid of a second battery
(s ta rting assis tance).
ï Operation only possible in
transmission position P *
The ball neck will not swivel because transmission position h,kor neutral iis selected. #
Dep ress the brake pedal. #
Enga gepark position j.
ï
Trailer coupling in motion *T
he ball neck will retract/ extend.
Do not attem pttospeed up, slow down or initiate the swivel mo vement using your hand, foot or other aids. During
th e swivel mo vement, do not couple a trailer.
When the ball neck has reached an operational position, the display message will disappear.
ï
Check trailer hitch lock *T
he trailer hitch is not operational during a journey with a trailer. &
WARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. Display messages and
warning/indicator lamps 503

Display messages
Possible causes/consequences and M
MSolutions #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivel mo vement and do not re-couple the trailer until thewa rning/indicator lamp goes out. #
Initiate a new swivel mo vement (/ page 283). #
When the display message disappears, couple up the trailer and drive on.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. #
Do not couple up the trailer. Drive on without the trailer. No tethere duced ground clearance due tothe
unlo cked ball nec k. #
Consult a qualified specialist workshop.
*T he trailer hitch will not be operational when theve hicle is stationar y. #
Uncouple the coupled trailer and secure it against rolling away. #
Ifth e ball neck has been retracted: initiatea new swivel mo vement (/ page 283).
The ball neck will engage vertically in the loc ked position and then engage beneath the bumper. #
Ifth e ball neck has been extended: initiate a new swivel mo vement (/ page 283).
The ball neck will engage benea th the bumper.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. 504
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Do not couple up the trailer. Drive on without the trailer. No tethere duced ground clearance due tothe
unlo cked ball nec k. #
Consult a qualified specialist workshop.
Please teach in trailer cou-
pling again using the but-
ton in load compartment
Wait for it to extend/
retract *T
he swivel mo vement of the trailer hitch is impaired. #
Use the button on the boot lid totrig ger a ne w,compl ete swivel mo vement until the ball neck engages beneath
th e bumper.
Ù
Steering malfunction Drive
carefully Visit workshop *A
powe rst eering malfunction has occur red. Steering characteristics may be impaired as a result. #
Drive on carefully. #
Consult a qualified specialist workshop.
Ù Steering malfunction
Increased physical effort
See Owner's Manual *T
he po werst eering assis tance 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. Displ
aymessa ges and warning/indicator lamps 505

Display messages
Possible causes/consequences and M
MSolutions
Ù Steering malfunction Stop
immediately See Owner's
Manual *T
hesteering is malfunctioning. Steering capability is significant lyimpaired. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
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. Ù
Rear axle steering cur-
rently malfunctioning *T
herear axle steering is temp orarily una vailable. The turning circle may become wider. #
Stop theve hicle in accordance with the tra ffic conditions and restart the engine.
If th e display message does not disappear: #
Drive on carefull y. #
Consult a qualified specialist workshop.
Ù Rear axle steering Malfunc-
tion Visit workshop *T
herear axle steering is malfunctioning.
The rear axle has no steering capability.
The steering wheel may be tilted when you drive in a stra ight line. #
Adapt your speed and drive on carefull y. #
Consult a qualified specialist workshop immediatel y.506
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Ù Rear axle steering Malfunc-
tion Stop immediately *T
herear axle steering is malfunctioning.
The rear axle has no steering capability.
The steering wheel may tilt considerably when you drive in a stra ight line.
Depending on thesteering wheel's tilting position, thesteering wheel will also vibrate and a continuous warning
to ne will sound. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
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. #
When stopping, bear the enlar gedve hicle width in mind.
Snow chain mode Maxi-
mum speed exceeded *T
he maximum permissible speed for snow chain mode has been exceeded. #
Drive more slowl y.
Active bonnet malfunction
See Owner's Manual *T
he active bonnet (pedestrian pr otection) is malfunctioning or inoperative af ter having already been triggered. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 507