2018 MERCEDES-BENZ S-CLASS COUPE air condition

The tire pressuretable sho ws there commended
tire pressure for all tires app rove dfo rth is vehi‐
cle. The recommended tire pressures apply for
cold tires under various operating conditions, i.e.
loading and/or speed of theve hicle.
If one or more tire sizes precede a tire pressure,
th e tire pressure information following is only
va lid forth ose tire sizes.
The load conditions "partially laden" and "fully
laden" are defined in theta ble for dif fere nt num‐
be rs of passengers and amounts of luggage. The
actual number of seats may dif fer from this.
Some tire pressure tables only show therim
diame ter ins tead of the comple tetire size, e.g.
R18 . The rim diame ter is part of the tire size and
can be found on the tire side wall (
→page 376).
Be sure toalso observ eth efo llowing fur ther
re lated subjects:
RNo tes on tire pressure (→page 363)
RTire and Loading Info rmation placard
(→page 369)
RMaximum tire pressure (→page 375)
Checking tire pressures manually
#Read the tire pressure forth e cur rent operat‐
ing conditions from theTire and Loading
Info rmation placard or the tire pressure
ta ble. Obser vethe no tes on tire pressure.
#Re mo vetheva lve cap of the tire tobe
ch ecked.
#Press the tire pressure gauge securely onto
th eva lve.
#Re ad the tire pressure.
#Ifth e tire pressure is lo werth an there com‐
mended value, inc rease the tire pressure to
th ere commended value.
#Ifth e tire pressure is higher than there com‐
mended value, release air. Todo so, press
down the me tal pin in theva lve, e.g. using
th e tip of a pen forex ample. Then check the
tire pressure again usingthe tire pressure
ga uge.
#Sc rew theva lve cap onto theva lve.
Wheels and tires 365

Uniform Tire Quality Grading Standards: a
uniform standard tograde thequ ality of tires
with rega rd totread quality, tire traction and
te mp erature characteristics. The quality grading
assessment is made bythe manufacturer follow‐
ing specifications from theU. S. go vernment. The
qu ality grade of a tire is imprinted on the side
wa ll of the tire.
Re commended tire pressure :th ere commen‐
ded tire pressure is the tire pressure specified
fo rth e tires mounted totheve hicle at thefa c‐
to ry.
The tire and information table conta insthere c‐
ommended tire pressures for cold tires, the max‐
imum permissible load and the maximum per‐
missible vehicle speed.
The tire pressure table conta insthere commen‐
ded tire pressures for cold tires under various
operating conditions, i.e. loading and/or speed
of theve hicle.
Increased vehicle weight due tooptional
equipment: the combined weight of all standard
and optional equipment available forth eve hicle, re
ga rdless of whe ther it is actually ins talled on
th eve hicle or not.
Rim: the part of the wheel on which the tire is
ins talled.
GA WR (Gross Axle Weight Rating): the GAWR
is the maximum permissible axle load. The
actual load on an axle must ne verexc eed the
gros s axle weight rating. The gross axle
weight
ra ti

ng can be found on theve hicle identification
plate on the B‑pillar on the driver's side.
Speed rating: the speed rating is pa rtof the tire
identification. It specifies the speed range for
which a tire is appr oved.
GV W (Gross Vehicle Weight): the gross vehicle
we ight comprises thewe ight of theve hicle
including fuel, tools, the spare wheel, accesso‐
ri es ins talled, occupants, luggage and the trailer
dr aw bar nose weight, if applicable. The gross
ve hicle weight must not exceed the gross vehicle
we ight rating GVWR as specified on theve hicle
identification plate on the B‑pillar on the driver's
side.
GV WR (Gross Vehicle Weight Rating): the
GV WR is the maximum permitted gross weight of
the fully laden vehicle (weight of theve hicle
including all accessories, occupants, fuel, lug‐
ga ge and the trailer dr awbar nose weight if appli‐
cable). The grossve hicle weight rating is speci‐
fi ed on theve hicle identification plate on the
B‑pillar on the driver's side.
Maximum weight of the laden vehicle: the
maximum weight is the sum of the curb weight
of theve hicle, thewe ight of the accessori es,the
maximum load and thewe ight of optional equip‐
ment ins talled at thefa ctor y.
Kilopascal (kPa): metric unitfor tire pressure .
6.9 kPa cor responds to1 psi. Ano ther unit for
tire pressure is bar.
10 0 ki
lopascal (kPa) equals
1 bar.
Load index: in additiontothe load-bearing
index, the load index may also be imprinted on
th e side wall of the tire. This specifies the load-
bearing capacity of the tire more precisel y.
Curb weight: thewe ight of a vehicle with stand‐
ard equipment including the maximum capacity
of fuel, oil and coolant. It also includes the air
conditioning sy stem and optional equipment if
Wheels and tires 37
9

Displaymessages
Possible causes/consequences and MSolutions
$
(USA only)
J
(Canada only)
Check Brake Fluid Level*T
here is not enough brake fluid inthe brake fluid reser voir.
&
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid leve l is too lo w,the braking ef fect and the braking characteristics may be impaired.
#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.
Do not add brake fluid.
#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.
Do not add brake fluid.
#
Check Brake Pad Wear *T
he brake pads ha vereached thewe ar limit.
#Visit a qualified specialist workshop.
G
Inoperative *O
ne or more of the mbrace sy stem's main features are malfunctioning.
#Vi sit a qualified specialist workshop.
Display messages and warning/indicator lamps 41
3

Displaymessages
Possible causes/consequences and MSolutions
Front Passenger Airbag
Enabled See Operator's
Manual *T
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 applying additional weight on the 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.
Displaymessage s andwarning/indicator lamps 41
7

Displaymessages
Possible causes/consequences and MSolutions
Front Passenger Airbag Dis-
abled See Operator's Man-
ual *T
he front passenger air bag and the knee air bag are deactivated, eventh ough an adult or a person with a build
cor responding tothat of an adult is seated on the front passenger seat. If additional forc es are applied tothe seat,
th ewe 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.
418
Displ aymessage s andwarning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
É
Stop Vehicle Vehicle Too
Low*Y
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.
420
Display messages and warning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
Malfunction Drive at Max.
50 mph*T
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.
Active Lane Keeping Assist
Currently Unavailable See
Operator's Manual *A
ctive Lane Keeping Assist is temp orarily una vailable.
The ambient conditions are outside the sy stem limitations (
→page 201).
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.
Active Lane Keeping Assist
Inoperative *A
ctive Lane Keeping Assist is malfunctioning.
#Visit a qualified specialist workshop.
Display messages and warning/indicator lamps 421

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