2015 MERCEDES-BENZ S-COUPE Owners Manual

opening the cap, you could be scalded by hotcoolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
X Park the vehicle on a level surface.
Only check the coolant level when the vehi-
cle is on a level surface and the engine has
cooled down.
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 115).
or
X Press Start/Stop button twice (Y page 115).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡ (70 †).
X Turn the SmartKey to position0(Y page 115) in the ignition lock.
or
X Remove Start/Stop button from ignition
lock ( Ypage 115).
X Slowly turn cap :half a turn counter-
clockwise to allow excess pressure toescape.
X Turn cap :further counter-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough coolant in coolant expansion tank ;. If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar
=in the filler
neck when warm, there is enough coolant
in expansion tank ;.
X If necessary, add coolant that has been tes-
ted and approved by Mercedes-Benz.
X Replace cap :and turn it clockwise as far
as it will go.
For further information on coolant, see( Y page 279).
Adding washer fluid to the windshield
washer system
GWARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and
touch only the components described in the following.
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
X To open: pull cap:upwards by the tab.
X Place cap :on the edge of the filler neck
and engage in place.
Engine compartment215
Maintenance and care
Z

XAdd the premixed washer fluid.
X To close: press cap :onto the filler neck
until it engages.
If the washer fluid level drops below the rec-
ommended minimum of 1 liter, a message
appears in the multifunction display prompt-
ing you to add washer fluid.
Further information on windshield washer
fluid/antifreeze ( Ypage 280).
ASSYST PLUS
The Digital Operator's Manual contains more
information on the ASSYST PLUS service
interval display.
Care
General notes
HEnvironmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man-
ner.
!For cleaning your vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. a ring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film.
!Do not park the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after clean-
ing. Braking heats the brake discs and the brake pads/linings, thus drying them. The
vehicle can then be parked.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents rec-
ommended and approved by Mercedes-Benz.
Exterior care
Automatic car wash
GWARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is restored.
!If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations. To prevent dam-
age to the vehicle, deactivate DISTRONIC
PLUS and the HOLD function in the follow-
ing or other similar situations:
R when towing the vehicle
R in the car wash
!Never clean your vehicle in a Touchless
Automatic Car Wash as these use special
cleaning agents. These cleaning agents can
damage the paintwork or plastic parts.
!Make sure that:
R the side windows are fully closed.
R the ventilation/heating is switched off
(the OFF button has been pressed).
R the windshield wiper switch is at position0.
R the 360° camera or rear view camera is
switched off.
The vehicle may otherwise be damaged.
216Care
Maintenance and care

!If the SmartKey is within the rear detec-
tion range of KEYLESS-GO, the following
situations, for example, could lead to the
unintentional opening of the trunk:
R using a car wash
R using a power washer
Make sure that the SmartKey is at least
10 ft (3 m) away from the vehicle.
!Make sure that the automatic transmis-
sion is in neutral position Nwhen washing
your vehicle in a tow-through car wash. The
vehicle may otherwise be damaged.
R Operating with the SmartKey:
Do not remove the SmartKey from the
ignition lock. Do not open the driver's
door when the engine is switched off or
at very low speeds. Otherwise, when in
transmission position Dor Rthe auto-
matic transmission will automatically
switch to park position Pand block the
wheels.
R Operating with the Start/Stop button:
Do not open the driver's door when the
engine is switched off or at very low
speeds. Otherwise, when in transmission
position Dor Rthe automatic transmis-
sion will automatically switch to parkposition Pand block the wheels.
Observe the following to make sure that the
automatic transmission stays in position N
neutral:
Operating with the SmartKey:
X Make sure that the ignition is switched on.
X Make sure that the vehicle is stationary.
X Depress and hold the brake pedal.
X Shift to neutral N.
X Release the brake pedal.
X Release the electric parking brake, if nec- essary.
X Switch off the ignition and leave the Smart-
Key in the ignition lock. Operating with the Start/Stop button:
X Make sure that the ignition is switched on.
X Make sure that the vehicle is stationary.
X Depress and hold the brake pedal.
X Engage park position P.
X Release the brake pedal.
X Remove Start/Stop button from ignition
lock ( Ypage 115).
X Insert the SmartKey into the ignition lock.
X Switch on the ignition.
X Depress and hold the brake pedal.
X Shift to neutral N.
X Release the brake pedal.
X Release the electric parking brake, if nec-essary.
X Switch off the ignition and leave the Smart-
Key in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off
wax from the windshield and the wiper
blades. This will prevent smears and reduce
wiping noises caused by residue on the wind- shield.
Information in the Digital Operator'sManual
In the Digital Operator's Manual you will find
information on the following topics: R Washing by hand
R Power washers
R Cleaning the paintwork
R Matte finish care
R Cleaning the wheels
R Cleaning the windows
R Cleaning wiper blades
R Cleaning the exterior lighting
R Cleaning the mirror turn signals
R Cleaning the sensors
R Cleaning the rear view camera
Care217
Maintenance and care
Z

RCleaning the 360° camera
R Cleaning the exhaust pipe
Interior care
In the Digital Operator's Manual you will find
information on the following topics: RCleaning the display
R Cleaning Night and Day View Assist
R Cleaning the plastic trim
R Cleaning the steering wheel and selector
lever
R Cleaning genuine wood and trim strips
R Cleaning the seat covers
R Cleaning the seat belts
R Cleaning the headliner and carpets
218Care
Maintenance and care

Useful information............................220
Where will I find...? ...........................220
Flat tire .............................................. 220
Battery (vehicle) ................................ 225
Jump-starting .................................... 229
Towing and tow-starting ..................232
Fuses .................................................. 235
219
Roadside Assistance

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops ( Ypage 27).
Where will I find...?
Vehicle tool kit
General notes
The towing eye is located in the stowage well under the trunk floor.
iApart from certain country-specific varia-
tions, the vehicles are not equipped with a
tire-change tool kit. If the vehicle is equip-
ped with tire-changing tools, these are
located in the stowage well under the trunk floor. Some tools for changing a wheel are
specific to the vehicle. For more informa-
tion on which tire changing tools are
required and approved to perform a wheel
change on your vehicle, consult a qualifiedspecialist workshop.
Tools required for changing a wheel may
include, for example:
R Jack
R Wheel chock
R Lug wrench
R Ratchet wrench
R Alignment bolt
Vehicles with a TIREFIT kit
Example
:Tire sealant filler bottle
;Towing eye
=Tire inflation compressor
X Open the trunk lid.
X Lift the trunk floor upwards ( Ypage 197).
X Use the TIREFIT kit ( Ypage 222).
Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
R tires with run-flat characteristics
(MOExtended tires) ( Ypage 221)
Vehicle preparation is not necessary on
vehicles with MOExtended tires
R a TIREFIT kit ( Ypage 220)
Information on changing/mounting a wheel( Y page 261).
X Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away(Y page 125).
X If possible, bring the front wheels into the
straight-ahead position.
X Switch off the engine.
220Flat tire
Roadside Assistance

XOpen the driver's door.
The on-board electronics now have status0. This is the same as the SmartKey having
been removed.
X Remove Start/Stop button from ignition
lock ( Ypage 115).
or, if the SmartKey is inserted in the ignitionlock:
X Remove the SmartKey from the ignitionlock.
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to traf-
fic conditions when doing so.
X Close the driver's door.
MOExtended tires (tires with run-flat
properties)
General notes
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking next to the tire size designation, the load-
bearing capacity and the speed index( Y page 255).
MOExtended tires may only be used in con-
junction with an active tire pressure monitor. If the pressure loss warning message
appears in the multifunction display:
R Observe the instructions in the display
messages ( Ypage 175).
R Check the tire for damage.
R If driving on, observe the following notes.
The maximum driving distance is approx-
imately 50 miles (80 km) when the vehicle is
partially laden and approximately 18 miles
(30 km) when the vehicle is fully laden.
In addition to the vehicle load, the driving dis- tance possible depends upon:
R Speed
R Road condition
R Outside temperature
The driving distance possible in run-flat mode may be reduced by extreme driving condi-
tions/maneuvers, or it can be increased
through a moderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display.
You must not exceed a maximum speed of
50 mph (80 km/h).iWhen replacing one or all tires, make sure
that you use only tires:
R of the size specified for the vehicle and
R marked "MOExtended"
If a tire has gone flat and cannot be
replaced with a MOExtended tire, a stand-
ard tire may be used as a temporary meas-
ure. Make sure that you use the proper size and type (summer or winter tire).
iVehicles equipped with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires.
A TIREFIT kit may be obtained from a quali- fied specialist workshop.
Flat tire221
Roadside Assistance

Important safety notes
GWARNING
When driving in emergency mode, the drivingcharacteristics deteriorate, e.g. when corner-
ing, accelerating quickly and when braking.
There is a risk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and driving maneuvers,
and driving over obstacles (curbs, potholes,
off-road). This applies in particular to a laden
vehicle.
Stop driving in emergency mode if:
R you hear banging noises.
R the vehicle starts to shake.
R you see smoke and smell rubber.
R ESP ®
is intervening constantly.
R there are tears in the sidewalls of the tire.
After driving in emergency mode, have the
wheel rims checked at a qualified specialist
workshop with regard to their further use. The defective tire must be replaced in every case.
TIREFIT kit
Important safety notes
TIREFIT is a tire sealant.
You can use TIREFIT to seal punctures of up to 0.16 in (4 mm), particularly those in the tire
tread. You can use TIREFIT at outside tem-
peratures down to Ò4 ‡ ( Ò20 †).
GWARNING
In the following situations, the tire sealant is
unable to provide sufficient breakdown assis-
tance, as it is unable to seal the tire properly:
R there are cuts or punctures in the tire larger
than those mentioned above.
R the wheel rim is damaged.
R you have driven at very low tire pressures or
on a flat tire.
There is a risk of an accident.
Do not drive the vehicle. Contact a qualified
specialist workshop.
GWARNING
The tire sealant is harmful and causes irrita-
tion. It must not come into contact with your
skin, eyes or clothing or be swallowed. Do not inhale TIREFIT fumes. Keep tire sealant away
from children. There is a risk of injury.
If you come into contact with the tire sealant,
observe the following:
R Rinse off the tire sealant from your skin
immediately with water.
R If the tire sealant comes into contact with
your eyes, immediately rinse them thor-
oughly with clean water.
R If tire sealant is swallowed, immediately
rinse your mouth out thoroughly and drink
plenty of water. Do not induce vomiting,
and seek medical attention immediately.
R Immediately change out of clothing which
has come into contact with tire sealant.
R If an allergic reaction occurs, seek medical
attention immediately.
!Do not operate the tire inflation compres-
sor for longer than eight minutes at a time
without a break. It may otherwise overheat.
The tire inflation compressor can be oper-
ated again once it has cooled down.
Comply with the manufacturer’s safety
instructions on the sticker on the tire inflation
compressor.
Using the TIREFIT kit
222Flat tire
Roadside Assistance