2017 MERCEDES-BENZ S CLASS clock

X
To lock: turn the mechanical key clockwise as
far as it will go to position G .X
To unlock: turn the mechanical key counter-
clockwise as far as it will go to position G .
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm sys-
tem will be triggered. Switch off the alarm
( Y
page 76).
Trunk
Important safety notes
G WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
G WARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey. ! The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
You can limit the opening angle of the trunk lid in
the multimedia system; see the Digital Opera-
tor's Manual.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
( Y
page 376).
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
You should preferably place luggage or loads in
the trunk. Observe the loading guidelines
( Y
page 281).
Obstruction detection with reversing
feature for the trunk lid Vehicles with trunk lid remote closing fea-
ture:
The trunk lid is equipped with automatic
obstruction detection with a reversing feature. If
a solid object blocks or restricts the trunk lid
when automatically opening or closing, this pro-
cedure is stopped. If the trunk lid is stopped
during the closing procedure, it will open again
automatically. The automatic obstruction detec-
tion with reversing feature is only an aid. It is not
a substitute for your attentiveness when open-
ing and closing the trunk lid.
G WARNING
The reversing feature does not respond: R
to soft, light and thin objects, e.g. fingers R
over the last 1/3 in (8 mm) of the closing
movement
The reversing feature cannot prevent some-
one being trapped in these situations in par-
ticular. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped: R
press the T button on the SmartKey, or R
pull or press the remote operating switch
on the driver's door or R
press the closing or locking button on the
trunk lid, or R
pull on the trunk lid handle Trunk 85
Opening and closing Z

X
To deactivate: open the glove box.X
Push the switch to position C .
If the vehicle is unlocked centrally, the trunk
will also be unlocked.
Unlocking the trunk using the
mechanical key
General notes Use the mechanical key if the trunk lid can no
longer be unlocked: R
using the SmartKey R
using HANDS-FREE ACCESS R
using the remote operating switch in the door
control panel
! The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
( Y
page 376).
Unlocking X
Insert the mechanical key into the trunk lid
lock as far as it will go.
X
Turn the mechanical key from position G
counter-clockwise as far as it will go to posi-
tion H .
The trunk lid is released. X
Turn the mechanical key back to position G
and remove it. Unlocking the trunk from the inside
using the emergency release button
You can unlock the trunk lid from the inside
using emergency release button C .X
Press emergency release button C briefly.
The trunk lid unlocks and opens.
The trunk lid can be unlocked using emergency
release button C when stationary or when the
vehicle is in motion.
Emergency release button C does not unlock
the trunk lid if the battery is disconnected or
discharged.
Emergency release button C flashes:R
for 30 minutes after the trunk lid is opened R
for 60 minutes after the trunk lid is closed
Side windows
Important safety notes
G WARNING
While opening the side windows, body parts
could become trapped between the side win-
dow and the door frame as the side window
moves. There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
body becomes trapped, release the switch or
pull the switch to close the side window again.
G WARNING
While closing the side windows, body parts in
the closing area could become trapped. There
is a risk of injury.90
Side windows
Opening and closing

X
Completely insert the fille r neck of the fuel
pump nozz le into the tank, hook in plac e and
refuel. X
On ly fill the tank unt il the pump nozz le
swit ches off.
Do not add any more fuel after the pump stops
filli ng for the first time. Otherwise, fuel may
leak out.
Closing the fuel filler flap X
Replac e the cap on the fille r neck and turn
clock wise unt il it engages audibly.X
Close the fuel fille r flap.
Close the fuel fille r flap before locking the veh i-
cle. If you drive at spee ds above 1 mph (2 km/h)
with the fuel filler flap open, the Fuel Filler
Flap Open message is sho wn in the multifunc-
tion display.
If you are driving wit h the fuel filler cap open, the

Important safety notes
G WARNIN G
If you operate information systems and com-
munication equipmen t integrate d in th e vehi-
cle while driving , you will be distracte d from
traffic conditions. You could also lose control
of th e vehicle. Ther e is a ris k of an accident.
Only operate th e equipmen t when th e traffic
situation permits. If you are no t sur e that this
is possible , park th e vehicl e payin g attention
to traffic condition s and operate th e equip-
men t when th e vehicl e is stationary.
You must observ e th e legal requirements for th e
country in whic h you are currentl y driving when
operating th e on-board computer.
G WARNIN G
If th e instrumen t cluste r has faile d or mal-
functioned, you may no t recognize function
restriction s in systems relevan t to safety. The
operating safet y of your vehicl e may be
impaired . Ther e is a ris k of an accident.
Drive on carefully. Hav e th e vehicl e checke d
at a qualified specialist workshop immedi-
ately.
If th e operating safet y of your vehicl e is
impaired , pull ove r as soo n as it is saf e to do so.
Contac t a qualified specialist workshop.
The on-board computer only shows message s or
warning s from certain systems in th e multifunc-
tion display. You should therefor e mak e sur e
your vehicl e is operating safely at all times .
Fo r an overview, see th e instrumen t panel illus-
tration ( Y
page 35).
Hybrid vehicles: mak e sur e that you read th e
separat e Operator's Manual. Otherwise, you
may no t recognize dangers.
Displays and operation
Instrument cluster lighting
The ligh t sensor in th e instrumen t cluste r auto -
matically control s th e brightness of th e multi-
function display. In daylight, th e displays in th e instrumen t cluste r are illuminated. A dimming
function is no t possible in daylight.
The lighting in th e instrumen t cluster, in th e dis-
plays and th e control s in th e vehicl e interior can
be adjusted usin g th e brightness control knob.
The brightness control is locate d between th e
instrumen t cluste r and th e multimedia system
display ( Y
page 36). X
Turn th e brightness control knob clockwise or
counter-clockwise.
If you tur n th e ligh t switch ( Y
page 124) to th e
` , X or X position , th e brightness
will depend upon th e brightness of th e ambi -
en t light.
Speedometer segments The segments in th e speedometer indicat e
whic h spee d range is available. R
Cruis e control activated ( Y
page 169):
The segments ligh t up from th e store d spee d
to th e en d of th e scale.R
DISTRONI C PLU S activated ( Y
page 171):
On e or two segments in th e set spee d range
ligh t up. R
DISTRONI C PLU S detects a vehicl e in fron t
moving mor e slowly than th e store d speed:
The segments between th e spee d of th e vehi-
cle in fron t and th e store d spee d ligh t up.
Tachometer
! Do no t driv e in th e overrevving range, as this
could damag e th e engine.
The red ban d in th e tachometer indicates th e
engine's overrevving range.
The fuel suppl y is interrupted to protect th e
engin e when th e red ban d is reached.
Outside temperature display
You should pay special attention to road condi-
tion s when temperatures are aroun d freezing
point.
Bea r in min d that th e outside temperature dis-
play indicates th e temperature measured and
does no t record th e road temperature.
The outside temperature display is in th e multi-
function display ( Y
page 212).210
Displays and operation
On-board computer and displays

Stowage compartments in the front Glove box X
To open: pull handle C and open glove box
flap D .X
To close: fold glove box flap D upwards until
it engages.
The glove box contains: R
a coin holder R
a pen holder R
three credit card holders R
a holder for the multimedia system remote
control
The glove box can only be locked and unlocked
using the mechanical key ( Y
page 79).X
To lock: insert the mechanical key into the
lock and turn it 90° clockwise to position H .X
To unlock: insert the mechanical key into the
lock and turn it 90° counter-clockwise to
position G . Eyeglasses compartment X
To open: press marking C .
The eyeglasses compartment opens down-
wards. X
To close: press marking C again and the
eyeglasses compartment returns upwards
and engages.
Make sure that the eyeglasses compartment is
always closed while the vehicle is in motion.
Stowage compartments in the center con-
sole
Stowage compartment in the center console
(example: Mercedes ‑ Maybach)X
To open: briefly press marking D .X
To close: push stowage compartment C in
the direction of the arrow until it engages.282
Stowage areas
Stowage and features

Example: adding engine oil X
Turn cap C counter-clockwise and remove it.X
Add engine oil.
If the oil level is at or below the MIN mark on
the oil dipstick, add 1.1 US qt (1.0 liter) of
engine oil. X
Replace cap C on the filler neck and tighten
clockwise.
Ensure that the cap locks into place securely. X
Check the oil level using the on-board com-
puter (except S 600 and Mercedes-AMG S 65)
( Y
page 314).
Further information on engine oil ( Y
page 373).
Additional service products
Important safety notes
G WARNING
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.
G WARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There
is a risk of injury. If you need to do any work inside the engine
compartment: R
switch off the ignition R
never reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area R
remove jewelry and watches R
keep items of clothing and hair, for exam-
ple, away from moving parts
G WARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is a risk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Slowly
open the cap to relieve pressure.
G WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
Checking coolant level
G WARNING
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.
G WARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,316
Engine compartment
Maintenance and care

you could be scalded if hot coolan t sprays out .
There is a ris k of injury.
Let th e engin e cool down before you open th e
cap . Wear gloves and eye protection . Slowly
open th e cap to reliev e pressure.
Example: checking th e coolan t levelX
Par k th e vehicl e on a level surface.
Only chec k th e coolan t level when th e vehicl e
is on a level surfac e and th e engin e has cooled
down .X
Turn th e SmartKey to position 2 in th e ignition
loc k ( Y
page 145).
or X
On vehicles wit h KEYLESS-GO , press th e
Start/Sto p butto n twice ( Y
page 145).X
Chec k th e coolan t temperature display in th e
instrumen t cluste r ( Y
page 211).
The coolan t temperature mus t be belo w
15 8 ‡ (70 †).X
Turn th e SmartKey to position 0 in th e ignition
loc k ( Y
page 145).
or X
Press th e Start/Sto p butto n once on vehicles
wit h KEYLESS-GO ( Y
page 145).X
Slowly tur n cap C counter-clockwise and to
reliev e excess pressure.X
Turn cap C further counter-clockwise and
remove it .
If th e coolan t is at th e level of marke r bar

The battery must be connected and charged.
Otherwise, you: R
cannot turn the SmartKey to position 2 in the
ignition lock R
cannot release the electric parking brake R
cannot shift the automatic transmission to
position N
Disarm the automatic locking feature before the
vehicle is towed ( Y
page 84). You could other-
wise be locked out when pushing or towing the
vehicle.
If the vehicle is in a dangerous area, it can be
towed out of that area with both axles on the
ground. In this case, the towing distance must
not be greater than 165 ft (50 m) and must not
exceed a towing speed of 6 mph (10 km/h). For
longer distances, have the vehicle loaded and
transported.
Installing/removing the towing eye
Installing the towing eye
G WARNING
The exhaust tail pipe may be very hot. There is
a risk of burns when removing the rear cover.
Do not touch the exhaust pipe. Take particular
care when removing the rear cover.
The brackets for the screw-in towing eye are
located in the bumpers. They are at the rear and
at the front, under covers C . X
Remove the towing eye from the vehicle tool
kit or the stowage tray ( Y
page 327).X
Press the mark on cover C inwards in the
direction of the arrow. X
Remove cover C from the opening.X
Screw in the towing eye clockwise as far as it
will go and tighten it.
Removing the towing eye X
Unscrew and remove the towing eye. X
Attach cover C to the bumper and press until
it engages. X
Place the towing eye in the vehicle tool kit or
the 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 338).
The automatic transmission automatically shifts
to position P when you open the driver's or front-
passenger door or when you remove the Smart-
Key from the ignition lock.
In order to ensure that the automatic transmis-
sion stays in position N when towing the vehicle,
you must observe the following points: X
You must use the SmartKey instead of the
Start/Stop button ( Y
page 145).X
Make sure that the vehicle is stationary and
that the key is in position 0 in the ignition lock.X
Turn the SmartKey to position 2 in the ignition
lock. X
Depress and hold the brake pedal. X
Shift the automatic transmission to position
N . X
Release the brake pedal. X
Release the electric parking brake. X
Leave the SmartKey in position 2 in the igni-
tion lock. X
Switch on the hazard warning lamps
( Y
page 126).
In order to signal a change of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination switch
as usual. In this case, only the indicator lamps
for the direction of travel flash. After resettingTowing and tow-starting 339
Breakdown assistance Z