2017 MERCEDES-BENZ S-Class CABRIOLET ignition

Display messagesPossible causes/consequences andMSolutions
Reduce Engine OilLevel
The engineoil level is to ohigh .
XHaveexcess engin eoil siphoned off .
For Engine OilLevelIgnitionMustBe On
The ignition is switched off .
XTurn theSmartKey to position 2in th eignition loc k (Ypage 124).
or
XOn vehicles wit hKEYLESS-GO ,press th eStart/Sto pbutto ntwice
(Ypage 124).
Nee dMor eTim etoCheck Engine OilLevel
The require dwaiting period was no tobserved.
XIf th eengin eis at normal operating temperature: repeat th emeas -
uremen tafter about fiv eminutes.
If th eengin eis no tat normal operating temperature, e.g. if th e
engin ewas only started briefly: repeat th emeasuremen tafter
approximately 30 minutes.
Engine Oil LevelNotMeasurabl ewithEngine Runnin g
The engineis running; oil level measuremen tis no tpossible.
XSwitc hoff th eengine.
XIf th eengin eis at normal operating temperature: wait about fiv e
minute sbefore carryin gout th emeasurement.
If th eengin eis no tat normal operating temperature, e.g. if th e
engin ewas only started briefly: wait approximately 30 minute s
before carryin gout th emeasurement.
Adding engine oil
HEnvironmenta lnot e
Whe naddin goil, tak ecar eno tto spil lany. If
oil enters th esoil or waterways, it is harmful to
th eenvironment.
!Use only engin eoils and oil filters that are
approve dfor vehicles wit h aservic esystem. A
list of th eengin eoils and oil filters that hav e
been tested and approve din accordanc ewit h
Mercedes-Ben zSpecification sfor Service
Products is available at any authorize d
Mercedes-Ben zCenter.
The followin gcaus eengin efailure or damag e
to th eexhaust system:
RUse of engin eoils and oil filters that hav e
no tbeen expressl yapprove dfor th eservic e
system
RReplacement of engin eoil and oil filter after
th ereplacemen tinterval specified by th e
servic esystem has expired
RUse of engin eoil additive s
!Do notadd to omuc hoil. addin gto omuc h
engin eoil can result in damag eto th eengin e
or to th ecatalytic converter. Hav eexcess
engin eoil siphoned off .
Example: addingengin eoil
XTurn cap :counter-clockwise and remove it .
XAddengin eoil.
If th eoil level is at or belo wtheMIN mar kon
th eoil dipstick ,add 1. 1US qt (1.0 lite r) of
engi ne oil.
Engine compartment275
Maintenance and care
Z

XReplacecap :on th efiller neck and tighten
clockwise.
Ensur ethat th ecap locks int oplac esecurely.
XChec kth eoil level again usin gth eoil dipstick
(except Mercedes-AM G S65) (Ypage 274).
XChec kth eoil level again wit hth eon-board
computer (Ypage 274).
Further information on engin eoil (
Ypage 331).
Additional service products
Important safety notes
GWARNIN G
Certain component sin th eengin ecompart-
ment, suc has th eengine, radiato rand part s
of th eexhaust system, can become ver yhot .
Workin gin th eengin ecompartmen tposes a
ris kof injury.
Wher epossible, let th eengin ecool down and
touch only th ecomponent sdescribe din th e
following.
GWARNIN G
The engin ecompartmen tcontain smoving
components. Certain components, suc has
th eradiato rfan ,may continue to run or start
again suddenly when th eignition is off .There
is aris kof injury.
If you need to do any wor kinside th eengin e
compartment:
Rswitch off th eignition
Rnever reac hint oth earea wher ethere is a
ris kof danger from moving components,
suc has th efan rotation area
Rremove jewelr yand watches
Rkeep items of clothing and hair ,for exam-
ple, away from moving part s
GWARNING
The coolin gsystem is pressurized, particularly
when th emotor is warm .If you open th ecap ,
you could be scalded if hot coolan tsprays out .
There is aris kof injury.
Let th eengin ecool down before you open th e
cap .Wear gloves and eye protection .Slowly
open th ecap to reliev epressure.
GWARNIN G
Opening th ehoo dwhen th eengin eis over-
heated or when there is afir ein th eengin e
compartmen tcould expos eyou to hot gase s
or other servic eproducts .There is aris kof
injury.
Let an overheate dengin ecool down before
opening th ehood. If there is afir ein th e
engin ecompartment, keep th ehoo dclosed
and contact th efir edepartment.
Checking coolant level
GWARNIN G
Certain component sin th eengin ecompart-
ment, suc has th eengine, radiato rand part s
of th eexhaust system, can become ver yhot .
Workin gin th eengin ecompartmen tposes a
ris kof injury.
Wher epossible, let th eengin ecool down and
touch only th ecomponent sdescribe din th e
following.
GWARNIN G
The coolin gsystem is pressurized, particularly
when th emotor is warm .If you open th ecap ,
you could be scalded if hot coolan tsprays out .
There is aris kof injury.
Let th eengin ecool down before you open th e
cap .Wear gloves and eye protection .Slowly
open th ecap to reliev epressure.
276Engine compartment
Maintenance and care

Example: checking the coolant level
XPark the vehicle on a level surface.
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down.
XTurn the SmartKey to position2in the ignition
lock (Ypage 124).
or
XOn vehicles with KEYLESS-GO, press the
Start/Stop button twice (Ypage 124).
XCheck the coolant temperature display in the
instrument cluster (Ypage 188).
The coolant temperature must be below
158 ‡ (70 †).
XTurn the SmartKey to position 0in the ignition
lock (Ypage 124).
or
XPress the Start/Stop button once on vehicles
with KEYLESS-GO (Ypage 124).
XSlowly turn cap :counter-clockwise and to
relieve excess pressure.
XTurn 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 expan-
sion tank ;.
XIf necessary, add coolant that has been tested
and approved by Mercedes-Benz.
XReplace cap :and turn it clockwise as far as
it will go.
For fu rther i
nformation on coolant, see
(Ypage 332).
Adding washer fluid to the windshield
washer system
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.
Example: adding fluid to the windshield
washer system
XTo open: pull cap:upwards by the tab.
XPlace cap :on the edge of the filler neck and
engage in place.
XAdd the premixed washer fluid.
XTo close: press cap :onto the filler neck
until it engages.
If the washer fluid level drops below the recom-
mended minimum fluid level of 1.1 US qt (1.0 l),
a message appears in the multifunction display
prompting you to add washer fluid (
Ypage 230).
Further information on washer fluid
(
Ypage 333).
ASSYST PLUS
Service message
The ASSYST PLUS service interval display
informs you of the next service due date.
Information on the type of service and service
intervals (see the separate Maintenance Book-
let).
Further information can be obtained at a quali-
fied specialist workshop, e.g. an authorized
ASSYST PLUS277
Maintenance and care
Z

Mercedes-Benz Center, or at
http://www.mbusa.com (USA only).
iThe ASSYST PLUS service interval display
does not show any information on the engine
oil level. Observe the notes on the engine oil
level (
Ypage 274).
The multifunction display shows a service mes-
sage for several seconds, e.g.:
RService A in XX Days
RService A Due
RService A Overdue by XX Days
Depending on the operating conditions of the
vehicle, the remaining time or distance until the next service due date is displayed.
The letter A
orB, possibly in connection with a
number or another letter, indicates the type of
service. A
stands for a minor service and Bfor a
major service.
You can obtain further information from an
authorized Mercedes-Benz Center.
The ASSYST PLUS service interval display does
not take into account any periods of time during
which the battery is disconnected.
Maintaining the time-dependent service sched-
ule:
XNote down the service due date displayed in
the multifunction display before disconnect-
ing the battery.
or
XAfter reconnecting the battery, subtract the
battery disconnection periods from the ser-
vice date shown on the display.
Hiding a service message
XPress the aor% button on the steering
wheel.
Displaying service messages
XSwitch the ignition on.
XUse ò on the steering wheel to call up the
list of menus.
XPress 9or: on the steering wheel to
select the Servicemenu and confirm with
a.
XPress 9or: on the steering wheel to
select the ASSYST PLUSsubmenu and con-
firm with a.
The service due date appears in the multi-
function display.
Information about Service
Resetting the ASSYST PLUS service
interval display
!If the ASSYST PLUS service interval display
has been inadvertently reset, this setting can
be corrected at a qualified specialist work-
shop.
Have service work carried out as described in
the Maintenance Booklet. This may otherwise
lead to increased wear and damage to the
major assemblies or the vehicle.
A qualified specialist workshop, e.g. an author-
ized Mercedes-Benz Center, will reset the
ASSYST PLUS service interval display after the
service work has been carried out. You can also
obtain further information on maintenance
work, for example.
Special service requirements
The specified maintenance interval takes only
the normal operation of the vehicle into
account. Under arduous operating conditions or
increased load on the vehicle, maintenance
work must be carried out more frequently, for
example:
Rregular city driving with frequent intermediate
stops
Rif the vehicle is primarily used to travel short
distances
Ruse in mountainous terrain or on poor road
surfaces
Rif the engine is often left idling for long periods
Under these or similar conditions, have, for
example, the air filter, engine oil and oil filter
replaced or changed more frequently. Under
arduous operating conditions, the tires must be
checked more often. Further information can be obtained at a qualified specialist workshop, e.g.
an authorized Mercedes-Benz Center.
278ASSYST PLUS
Maintenance and care

!Make sure that the automatic transmission
is in neutral position Nwhen washing your
vehicle in a tow-through car wash. The vehicle
may otherwise be damaged.
ROperating with the SmartKey:
Do not remove the SmartKey from the igni-
tion lock. Do not open the driver's door
when the engine is switched off or at very
low speeds. Otherwise, when in transmis-
sion position Dor Rthe automatic trans-
mission will automatically switch to park
position Pand block the wheels.
ROperating 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 transmission
will automatically switch to park position P
and block the wheels.
Observe the following to make sure that the
automatic transmission stays in position Nneu-
tral:
Operating with the SmartKey:
XMake sure that the ignition is switched on.
XMake sure that the vehicle is stationary.
XDepress and hold the brake pedal.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake, if neces-
sary.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
Operating with the Start/Stop button:
XMake sure that the ignition is switched on.
XMake sure that the vehicle is stationary.
XDepress and hold the brake pedal.
XEngage park position P.
XRelease the brake pedal.
XRemove Start/Stop button from ignition lock
(Ypage 124).
XInsert the SmartKey into the ignition lock.
XSwitch on the ignition.
XDepress and hold the brake pedal.
XShift to neutralN.
XRelease the brake pedal.
XRelease the electric parking brake, if neces-
sary.
XSwitch off the ignition and leave the SmartKey
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 windshield.
Washing by hand
In some countries, washing by hand is only
allowed at specially equipped washing bays.
Observe the legal requirements in each country.
XDo not use hot water and do not wash the
vehicle in direct sunlight.
XUse a soft sponge to clean.
XUse a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz.
XThoroughly hose down the vehicle with a gen-
tle jet of water.
XDo not point the water jet directly towards the
air inlet.
XUse plenty of water and rinse out the sponge
frequently.
XRinse the vehicle with clean water and dry
thoroughly with a chamois.
XDo not let the cleaning agent dry on the paint-
work.
Carefully remove all deposits of road salt as
soon as possible when driving in winter.
Power washers
GWARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-
edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
280Care
Maintenance and care

These notes also apply to light alloy wheels with
a clear matte finish.
The vehicle should ideally be washed by hand
using a soft sponge, car shampoo and plenty of
water.
Use only insect remover and car shampoo from
the range of approved Mercedes-Benz care
products.
Cleaning the vehicle parts
Cleaning the soft top
!Never use any of the following to clean the
soft top:
Rgasoline
Rthinner
Rtar or stain remover
Rother organic solvents
!Remove bird droppings immediately as they
are corrosive and, therefore, can make the
soft-top fabric leak. Do not use high-pressure
cleaning equipment to clean the vehicle. Do
not use sharp-edged equipment to remove ice
and snow.
XLight soiling: you can clean the soft top while
it is dry or rinse it with clean water.
XNormal to heavy soiling: clean the soft top
with a brush and clear water. Clean stains and
other dirt with a brush and soft top cleaning
agents that have been recommended and
approved by Mercedes-Benz. Always brush
from front to back, following the grain of the
fabric.
Frequent cleaning reduces the soft top's resist-
ance to dirt.
To restore this resistance to dirt, clean the soft
top using soft top cleaning agents that have
been recommended and approved by
Mercedes-Benz.
Incorrect cleaning and care, as well as aging,
can cause the soft-top seams to leak. Have the
soft-top seams sealed at a qualified specialist
workshop, e.g. at an authorized Mercedes-Benz
Center.
Cover the soft top appropriately if you plan to
leave the vehicle outside for a long period of
time.
Cleaning AIRCAP
Cleaning the wind deflector
!Do not use high-pressure cleaning equip-
ment to clean the net.
Clean the wind deflector on the windshield with
the soft top closed.
XApply the electric parking brake manually.
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XOpen the cover in the lower center console.
The AIRCAP button is under the cover.
XPress AIRCAP button :.
The wind deflector between the windshield
and the soft top is extended.
XClean net ;of the wind deflector with a soft
brush or a moist cloth.
If there is a large amount of dirt on the net:
Rclean with the care products and cleaning
agents recommended and approved by
Mercedes-Benz
Rrinse with clean water
282Care
Maintenance and care

Cleaning the AIRCAP wind screen
Clean the AIRCAP wind screen with the soft top
open.
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XOpen the soft top (Ypage 90).
XOpen the cover in the lower center console.
The AIRCAP button is under the cover.
XPress AIRCAP button :.
The AIRCAP wind screen moves upward.
XClean the net ;of the AIRCAP wind screen
with a damp cloth. Use only the care products and cleaning agents recommended and
approved by Mercedes-Benz for this.
Cleaning the wheels
GWARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-
edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
!Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
!Do not park your vehicle for a long period of
time directly after cleaning, particularly after
cleaning the wheel rim with wheel cleaner.
Wheel cleaner can lead to the increased cor-
rosion of the brake discs and pads. Therefore, drive for a few minutes after cleaning. By
heating up the brakes, the brake discs and
pads dry. The vehicle can then be parked for a
long period of time.
Cleaning the windows
GWARNING
You could become trapped by the windshield wipers if they start moving while cleaning the
windshield or wiper blades. There is a risk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
!Do not use dry cloths, abrasive products,
solvents or cleaning agents containing sol-
vents to clean the inside of the windows. Do
not touch the insides of the windows with
hard objects, e.g. an ice scraper or ring. There
is otherwise a risk of damaging the windows.
!Clean the water drainage channels of the
windshield and the rear window at regular
intervals. Deposits such as leaves, petals and pollen may under certain circumstances pre-
vent water from draining away. This can lead
to corrosion damage and damage to elec-
tronic components.
XClean the inside and outside of the windows
with a damp cloth and a cleaning product that
is recommended and approved by Mercedes-
Benz.
Cleaning wiper blades
GWARNING
You could become trapped by the windshield wipers if they start moving while cleaning the
Care283
Maintenance and care
Z

windshield or wiper blades. There is a risk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield orwiper blades.
!Do not pull the wiper blade. Otherwise, the
wiper blade could be damaged.
!Do not clean wiper blades too often and do
not rub them too hard. Otherwise, the graph-
ite coating could be damaged. This could
cause wiper noise.
!Hold the wiper arm securely when folding
back. The windshield could be damaged if the
wiper arm smacks against it suddenly.
XFold the windshield wiper arms away from the
windshield (Ypage 112).
XCarefully clean the wiper blades with a damp
cloth.
XFold the windshield wiper arms back again
before switching on the ignition.
Cleaning the exterior lighting
!Only use cleaning agents or cleaning cloths
which are suitable for plastic light lenses.
Unsuitable cleaning agents or cleaning cloths
could scratch or damage the plastic light len- ses.
XClean the plastic lenses of the exterior lights
with a wet sponge and a mild cleaning agent,
e.g. Mercedes-Benz car shampoo or cleaning
cloths.
Cleaning the mirror turn signals
!Only use cleaning agents or cleaning cloths
that are suitable for plastic lenses. Unsuitable
cleaning agents or cleaning cloths could
scratch or damage the plastic lenses of the
mirror turn signals.
XClean the plastic lenses of the mirror turn sig-
nals in the exterior mirror housing using a wet
sponge and mild cleaning agent, e.g.
Mercedes-Benz car shampoo or cleaning
cloths.
Cleaning the sensors
!If you clean the sensors with a power
washer, make sure that you keep a distance
of at least 11.8 in (30 cm)betwee nthe vehicl e
and the power washer nozzle. Information
about the correct distance is available from
the equipment manufacturer.
XClean sensors :of the driving systems with
water, car shampoo and a soft cloth.
Cleaning the rear view camera and 360°
camera
!Do not clean the camera lens and the area
around the rear view camera or 360° camera
with a power washer.
284Care
Maintenance and care