start stop button MERCEDES-BENZ S-COUPE 2015 Owner's Manual

:Gear indicator
;Upshift indicator
Before the engine speed reaches the red area, an upshift indicator will be shown in the mul-
tifunction display. X If the color in the speedometer multifunc-
tion display changes to red and the
UPdis-
play message is shown, shift up a gear
using the right-hand steering wheel paddle
shifter.
The automatic transmission shifts up to the
next gear if this is permissible.
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics: R Downshifting
R Switching off the manual drive program
Transfer case
!
Performance tests may only be carried
out on a 2-axle dynamometer. The brake
system or transfer case could otherwise be
damaged. Contact a qualified specialist
workshop for a performance test.
!To prevent ESP ®
from intervening, the
ignition must be switched off (SmartKey or
the Start/Stop button in position 0or 1) if:
R the electric parking brake is being tested
on a brake dynamometer.
R the vehicle is being towed with only one
axle raised (not permitted for vehicles
with 4MATIC).
The brake system could otherwise be dam-aged.
!Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised,
as doing so will damage the transmission.
This section is only valid for vehicles with 4-
wheel drive (4MATIC). Power is always trans- mitted to both axles.
Refueling
Important safety notes
GWARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refueling.
GWARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not comeinto contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
R Wash away fuel from skin immediately
using soap and water.
R If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
122Refueling
Driving and pa rking

requires the driver to keep his hands on the
steering wheel and to steer himself.
If you do not steer yourself or if you take your
hands off the steering wheel for a prolonged
period of time, the system will first alert you
with a visual warning. A steering wheel sym-
bol appears in the multifunction display. If you have still not started to steer and have not
taken hold of the steering wheel after five
seconds at the latest, a warning tone also
sounds to remind you to take control of the
vehicle. Steering Assist and Stop&Go Pilot are switched to passive. DISTRONIC PLUS
remains active.
Activating Steering Assist and Stop&Go
Pilot
X Press button ;.
Indicator lamp :lights up. The
DTR+:
Steering Assist. Onmessage appears
in the multifunction display. Steering Assist and Stop&Go Pilot are activated.
Information in the multifunction display
If Steering Assist and Stop&Go Pilot are acti-
vated but not ready for a steering interven-
tion, steering wheel symbol :appears in
gray. If the system provides you with support by means of steering interventions, sym-bol
:is shown in green.
Deactivating Steering Assist and Stop&Go Pilot
X Press button ;.
Indicator lamp :goes out. The
DTR+:
SteeringAssist.Offmessage appears
in the multifunction display. Steering Assist
and Stop&Go Pilot are deactivated.
When DISTRONIC PLUS is deactivated or not available, Steering Assist and Stop&Go Pilot
are deactivated automatically.
HOLD function
General notes
The HOLD function can assist the driver in the
following situations:
R when pulling away, especially on steep
slopes
R when maneuvering on steep slopes
R when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effect is canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away.
138Driving systems
Driving and parking

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

!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

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

If the automatic transmission cannot be shif-ted to position N, have the vehicle transpor-
ted on a transporter or trailer.
The battery must be connected and charged.
Otherwise, you:
R cannot turn the SmartKey to position 2in
the ignition lock
R cannot release the electric parking brake
R cannot shift the automatic transmission to
position N
iDeactivate the automatic locking feature
( Y page 82). You could otherwise be locked
out when pushing or towing the vehicle.
Installing/removing the towing eye
Installing the towing eye
The brackets for the screw-in towing eyes are
located in the bumpers. They are at the front and at the rear under covers :.
X Remove the towing eye from the vehicle
tool kit/stowage tray ( Ypage 220).
X Press the mark on cover :inwards in the
direction of the arrow.
X Remove cover :from the opening.
X Screw in and tighten the towing eye clock-
wise to the stop.
Removing the towing eye
X Unscrew and remove the towing eye.
X Attach cover :to the bumper and press
until it engages.
X Place the towing eye in the vehicle tool kit/
stowage tray.
Towing a vehicle with both axles on
the ground
It is important that you observe the safety
instructions when towing away your vehicle( Y page 232).
The automatic transmission automatically
shifts to position Pwhen you open the driver's
or front-passenger door or when you remove the SmartKey from the ignition lock.
In order to ensure that the automatic trans-
mission stays in position Nwhen towing the
vehicle, you must observe the followingpoints:
X You must use the SmartKey instead of the
Start/Stop button ( Ypage 115).
X Make sure that the vehicle is stationary and
the SmartKey in the ignition lock is in posi-
tion 0.
X Turn the SmartKey to position 2in the igni-
tion lock.
X Depress and hold the brake pedal.
X Shift the automatic transmission to posi-tion N.
X Release the brake pedal.
X Release the electric parking brake.
X Leave the SmartKey in position 2in the
ignition lock.
X Switch on the hazard warning lamps(Y page 102).
iIn order to signal a change of direction
when towing the vehicle with the hazard
warning lamps switched on, use the com-
bination switch as usual. In this case, only
the indicator lamps for the direction of
travel flash. After resetting the combina-
Towing and tow-starting233
Roadside Assistance
Z

Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tiresin the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the inter-
vals in the tire manufacturer's warranty book in your vehicle documents. If no warranty
book is available, the tires should be rotated
every 3,000 to 6,000 miles (5,000 to
10,000 km), or earlier if tire wear requires.
Ensure the direction of rotation is maintained.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressure and reac-
tivate the tire pressure monitor if necessary( Y page 248).
Direction of rotation
Tires with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of hydroplaning. These advantages can only
be gained if the tires are installed correspond-ing to the direction of rotation.
An arrow on the sidewall of the tire indicates
its correct direction of rotation.
Storing wheels
Store wheels that are not being used in a cool, dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel.
Mounting a wheel
Preparing the vehicle
X Stop the vehicle on solid, non-slippery and
level ground.
X Apply the electric parking brake manually.
X Bring the front wheels into the straight-
ahead position.
X Shift the transmission to position P. X
Make sure that "normal" level is selected
for AIRMATIC ( Ypage 140).
X Switch off the engine.
X Open 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 ignition
lock: X Remove the SmartKey from the ignition
lock.
X If included in the vehicle equipment,
remove the tire-change tool kit from the
vehicle.
X Secure the vehicle to prevent it from rolling
away.
Securing the vehicle to prevent it from
rolling away
If your vehicle is equipped with a wheel chock, it can be found in the tire-change tool kit ( Y page 220).
The folding wheel chock is an additional
safety measure to prevent the vehicle from
rolling away, for example when changing a
wheel.
X Fold both plates upwards :.
X Fold out lower plate ;.
X Guide the lugs on the lower plate fully into
the openings in base plate =.
262Changing a wheel
Wheels and tires