2018 MERCEDES-BENZ S-CLASS COUPE steering

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

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

Displaymessages
Possible causes/consequences and MSolutions
h
Warning Tire Malfunction*T
he tire pressure in one or more tires has dropped suddenly. The wheel position is displa yed.
&
WARNING Risk of an accident from driving wi thaflat tire
Flat tires are dangerous in thefo llowing ways:
RThe tires can overheat and cause a fire .
RThe driving characteristics, as well as steering and braking, may be greatly impaired.
Yo u could then lose control of theve hicle.
#Do not drive with a flat tire.
#Observ eth e no tes on flat tires.
No tes on flat tires (→page 341).
#St op theve hicle, paying attention toroad and traf fic conditions.
#Check the tires.
Tire Press. Monitor Cur-
rently Unavailable *N
o signals can be receive d from the tire pressure sensors due tostro ngradio signal source inter fere nce. The tire
pressure monito ring sy stem is temp orarily una vailable.
#Drive on.
The tire pressure monitoring sy stem restarts automatically as soon as the cause has been rectified.
Display messages and warning/indicator lamps 431

Displaymessages
Possible causes/consequences and MSolutions
h
Wheel Sensor(s) Missing*T
here is no signal from the tire pressure sensor of one or more tires. The pressure of the af fected tire is not dis‐
play ed.
#Have thefa ulty tire pressure sensor replaced at a qualified specialist workshop.
Tire Pressure Monitor Inop-
erative No Wheel Sensors *T
he wheels fitted do not ha vesuitable tire pressure sensors. The tire pressure monitoring sy stem is deactivated.
#Mount wheels with suitable tire pressure sensors.
Tire Press. Monitor Inopera-
tive *T
he tire pressure monitoring sy stem is defective.
&
WARNING Thereis arisk of an accident if the tire pressure monitoring sy stem is malfunctioning
If th e tire pressure monitoring sy stem is malfunctioning, it is not able toissue a warning if there is pressure loss
in one or more of the tires.
Und erinflated tires ma y,forex ample, impair the driving, steering and braking characteristics.
#Ha ve the tire pressure monitoring sy stem checked at a qualified specialist workshop.
#Visit a qualified specialist workshop.
432
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
Ð
Steering Malfunction Stop
Immediately See Opera-
tor's Manual*T
hesteering is malfunctioning. Steering capability is considerably impaired.
&
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf etyis jeopardized.
#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.
#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.
Ð
Steering Malfunction
Increased Physical Effort
See Operator's Manual *T
he po wer assi stance of thesteering 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,yo uwill need touse more forc eto steer.
#If safe steering is possible, drive on carefully.
#Vi sit or consult a qualified specialist workshop immediatel y.
#If safesteering is possible, drive on carefully.
#Vi sit or consult a qualified specialist workshop immediatel y.
Displaymessage s andwarning/indicator lamps 439

Warning/indicator lamp
Possible causes/consequences and MSolutions
!
ABSwarning lamp The
yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If th ere is an additional warning tone, EBD is malfunctioning.
Other driving and driving safe ty systems may also be faulty.
&
WARNING Thereisrisk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning, the wheels could lock when braking
The steering capability and braking characteristics are thus se verely impaired .Th ebr aking dis tance in an emer‐
ge ncy braking situation can increase. In addition, other driving saf etysy stems are switched off.
#Drive on carefull y.
#Have the brake sy stem checked immediately at a qualified specialist workshop.
#Drive on carefully.
#Obser vethe messages in the multifunction displa y.
#Visit a qualified specialist workshop.
÷
ESP®wa rning lamp flashes The
yellow ESP
®wa rning lamp flashes while theve hicle is in motion.
ESP
®is inter vening.
#Ad apt your drivin gst yle to suit thero ad and weather conditions.
Display messages and warning/indicator lamps 451

Warning/indicator lamp
Possible causes/consequences and MSolutions
·
Distance warning lamp The
red dis tancewarning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed.#Be prepared tobrake immediatel y.
#Increasethe dis tance.
Ac tive Brake Assi st.
Ve hicle
Wa rning/indicator lamp
Possible causes/consequences and MSolutions
Ð
Powe rst eering sy stem
wa rning lamp The
red po werst eering sy stem warning lamp is lit while the engine is running.
The po werst eering assis tance or thesteering itself is malfunctioning.&
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf etyis jeopardized.
#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.
#Obser vethe messages in the multifunction displa y.
Displaymessage s andwarning/indicator lamps 457