2016 MERCEDES-BENZ S-Class SEDAN check engine light

ProblemPossible causes/consequences andMSolutions
The engine cannot be
started using the Smart-
Key.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 374).
or
XJump-start the vehicle (Ypage 376).
or
XConsult a qualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 82) and replace it if necessary
(Ypage 82).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
Doors85
Opening and closing
Z

automatic operation by pressing or pulling
again.
If the sliding sunroof is raised at the rear, it low-
ers slightly automatically at higher speeds. The
noise level in the vehicle interior is reduced as a
result.
At low speeds it raises again automatically.
You can also temporarily deactivate automatic
lowering. To do so, press the3switch. The
sliding sunroof raises again automatically.
You can continue to operate the sliding sunroof
after switching off the engine or removing the
SmartKey from the ignition lock. This function
remains active for five minutes or until you open
a front door.
The sliding sunroof cannot be opened if a roof
carrier is installed. In order to allow ventilation
of the vehicle interior, you can raise the sliding
sunroof.
If contact is made with a roof carrier approved
by Mercedes-Benz, the sliding sunroof lowers
slightly but remains raised at the rear.
Before opening, raising or closing the sliding
sunroof, a check is carried out to see whether a valid SmartKey is in the vehicle, if:
Rthe 3 switch is pressed or pulled
and
Rthe Start/Stop button is used instead of the
SmartKey in the ignition lock
and
Rthe engine is not running
This is carried out by means of a brief radio con-
nection between the vehicle and the SmartKey.
Rain-closing feature
The raised sliding sunroof automatically lowers
at the rear when driving if it starts to rain. The
sliding sunroof is lowered depending on:
Rthe road speed and
Rthe intensity of the rain
You can manually cancel the automatic closing
procedure. Press or pull the 3switch in any
direction.
To raise the sliding sunroof again, press the
3 switch in direction :. The rain-closing
feature remains activated.
Operating the roller sunblinds for the
sliding sunroof
Important safety notes
GWARNING
Parts of the body could become trapped
between the roller sunblind and frame or slid-
ing sunroof during automatic opening or clos-
ing. There is a risk of injury.
When opening or closing, make sure that no
body parts are in the sweep of the roller sun-
blind.
If somebody becomes trapped:
Rrelease the switch immediately, or
Rduring automatic operation, push the
switch briefly in any direction
The opening or closing procedure will be stop- ped.
The roller sunblinds shield the vehicle interior
from sunlight. The front roller sunblind can only be opened and closed when the sliding sunroof
is closed.
Roller sunblind reversing feature
The roller sunblinds are equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts a roller sunblind during the closing
process, the roller sunblind opens again auto-
matically. The automatic reversing feature is
only an aid and is not a substitute for your atten-
tion when closing the roller sunblinds.
GWARNING
The reversing feature does not react in par-
ticular to soft, light and thin objects, e.g. small
fingers. This means that the reversing feature
cannot prevent someone being trapped in
these situations. There is a risk of injury.
When closing the roller sunblind, make sure
that no body parts are in the sweep area.
If somebody becomes trapped:
Rrelease the switch immediately, or
Rpress the switch in any direction during the
automatic closing process
The closing process is stopped.
Panorama roof with power tilt/sliding panel99
Opening and closing
Z

Useful information
i
This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of publica-
tion of the Operator's Manual. Country-spe-
cific 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 specialist
workshops (Ypage 28).
Correct driver's seat position
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
XObserve the safety guidelines on seat adjust-
ment (Ypage 105).
XCheck whether you have adjusted seat =
properly (Ypage 106). When adjusting the seat, make sure that:
Ryou are as far away from the driver's air bag as
possible
Ryou are sitting in a normal upright position
Ryou can fasten the seat belt properly
Ryou have moved the backrest to an almost
vertical position
Ryou have set the seat cushion angle so that
your thighs are gently supported
Ryou can depress the pedals properly
XCheck whether the head restraint is adjusted
properly.
When doing so, make sure that you have
adjusted the head restraint so that the back of
your head is supported at eye level by the
center of the head restraint.
XObserve the safety guidelines on steering
wheel adjustment (Ypage 120).
XMake sure that steering wheel
:is adjusted
properly (Ypage 120).
When adjusting the steering wheel, make sure
that:
Ryou can hold the steering wheel with your
arms slightly bent
Ryou can move your legs freely
Ryou can see all the displays in the instrument cluster clearly
XObserve the safety guidelines for seat belts
(Ypage 47).
XCheck whether you have fastened seat
belt ;properly (Ypage 49).
The seat belt should:
Rfit snugly across your body
Rbe routed across the middle of your shoulder
Rbe routed in your pelvic area across the hip
joints
XBefore starting off, adjust the rear-view mirror
and the exterior mirrors in such a way that you
have a good view of road and traffic condi-
tions (
Ypage 123).
XVehicles with a memory function: save the
seat, steering wheel and exterior mirror set-
tings with the memory function (
Ypage 126).
104Correct driver's seat position
Seats, steering wheel and mirrors

Problems with the windshield wipers
ProblemPossible causes/consequences andMSolutions
The windshield wipers
are jammed.Leaves or snow, for example, may be obstructing the windshield wiper
movement. The wiper motor has been deactivated.
XSwitch off the engine using the Start/Stop button and open the
driver's door.
XRemove the cause of the obstruction.
XSwitch the windshield wipers back on.
The windshield wipers
fail completely.The windshield wiper drive is malfunctioning.
XSelect another wiper speed on the combination switch.
XHave the windshield wipers checked at a qualified specialist work-
shop.
The wiper motor has been deactivated.
XSwitch off the engine using the Start/Stop button and open the
driver's door.
XRemove the cause of the obstruction.
XSwitch the windshield wipers back on.
For a standard wiper sys-
tem only: the windshield
washer fluid from the
spray nozzles no longer
hits the center of the
windshield.The spray nozzles are misaligned.
XHave the spray nozzles adjusted at a qualified specialist workshop.
Windshield wipers139
Lights and windshield wipers
Z

Problems with the engine
ProblemPossible causes/consequences andMSolutions
The engine does not
start. The starter motor
can be heard.RThere is a malfunction in the engine electronics.
RThere is a malfunction in the fuel supply.
Before attempting to start the engine again:
XTurn the SmartKey back to position 0in the ignition lock.
or
XPress the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out.
XTry to start the engine again (Ypage 164). Avoid excessively long
and frequent attempts to start the engine as these will drain the
battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak or
discharged.
XJump-start the vehicle (Ypage 376).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
XTry to start the engine again.
If the engine still does not start:
XConsult a qualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
XHave the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
gauge shows a value
above 248 ‡ (120 †).The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 356). Observe the warning notes
as you do so and add coolant if necessary.
Driving169
Driving and parking
Z

XPress the fuel filler flap in the direction of
arrow:.
The fuel filler flap swings up.
XTurn the fuel filler cap counterclockwise and
remove it.
XInsert the fuel filler cap into the holder on the
inside of the fuel filler flap.
XCompletely insert the filler neck of the fuel
pump nozzle into the tank, hook in place and
refuel.
XOnly fill the tank until the pump nozzle
switches off.
Do not add any more fuel after the pump stops
filling for the first time. Otherwise, fuel may
leak out.
Opening the fuel filler flap (PLUG-IN
HYBRID vehicles)
XPull switch :.
Indicator lamp ;flashes and the Please
Wait Depressurizing Tankmessage
appears in the multifunction display.
If the fuel filler cap is open, indicator lamp ;
lights up.
The Tank is Depressurized Ready for
Refuelingmessage appears in the multi-
function display.
Please be sure to observe the information on
refueling on the fuel filler flap.
There is a malfunction if:
Rindicator lamp ;first flashes and then goes
out
Rthe yellow engine diagnostics warning lamp
lights up
iFrom a speed of 2 km/h, the fuel filler cap
can no longer be opened.
iThe opening process for the fuel filler cap
may take up to 15 minutes.
:To insert the fuel filler cap
;Tire pressure table
=Fuel type to be used
XTurn the fuel filler cap counterclockwise and
remove it.
XInsert the fuel filler cap into the holder on the inside of the fuel filler flap.
XCompletely insert the filler neck of the fuel
pump nozzle into the tank, hook in place andrefuel.
XOnly fill the tank until the pump nozzle
switches off.
Do not add any more fuel after the pump stopsfilling for the first time. Otherwise, fuel may
leak out.
Closing the fuel filler flap
XReplace the cap on the filler neck and turn
clockwise until it engages audibly.
XClose the fuel filler flap.
Close the fuel filler flap before locking the vehi-
cle.
If you drive at speeds above 1 mph (2 km/h)
with the fuel filler flap open, the Fuel Filler
Flap Openmessage is shown in the multifunc-
tion display.
If you are driving with the fuel filler cap open, the
8 reserve fuel warning lamp flashes. A mes-
sage appears in the multifunction display
(
Ypage 296).
In addition, the ;Check Engine warning
lamp may light up (
Ypage 320).
iFor further information on warning and indi-
cator lamps in the instrument cluster, see
(
Ypage 320).
Refueling179
Driving and parking
Z

Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt resi-
due may form on the brake discs and brake
pads. This can result in a significantly longer
braking distance.
RIn order to prevent any salt build-up, apply the
brakes occasionally while paying attention to the traffic conditions.
RCarefully depress the brake pedal and the
beginning and end of a journey.
RMaintain a greater distance to the vehicle
ahead.
Servicing the brakes
!The brake fluid level may be too low, if:
Rif the red brake warning lamp lights up in
the instrument cluster and
Ryou hear a warning tone while the engine is
running
Observe additional warning messages in the
multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immediately.
Consult a qualified specialist workshop to
arrange this.
!Vehicles with 4MATIC: function or per-
formance tests may only be carried out on a 2-
axle dynamometer. If you wish to operate the
vehicle on such a dynamometer, please con-
sult a qualified specialist workshop in
advance. You could otherwise damage the
drive train or the brake system.
!Vehicles with 4MATIC: the ESP®system
operates automatically. The engine and the
ignition must therefore be switched off (the
SmartKey must be in position 0or 1in the
ignition lock or the Start/Stop button must be
in position 0or 1) if the electric parking brake
is tested on a brake dynamometer.
Braking triggered automatically by ESP
®may
cause severe damage to the brake system.
!Vehicles without 4MATIC: the ESP®sys-
tem operates automatically. The engine and
the ignition must therefore be switched off
(the SmartKey must be in position 0or 1in the
ignition lock or the Start/Stop button must be
in position 0or 1) if:
Rthe electric parking brake is tested using a
brake dynamometer.
Rthe vehicle is towed with one axle raised.
Braking triggered automatically by ESP®may
cause severe damage to the brake system.
All checks and maintenance work on the brake
system must be carried out at a qualified spe-
cialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the functional-
ity of your brakes at regular intervals.
Information on BAS (Brake Assist) (
Ypage 69)
and BAS PLUS (Brake Assist PLUS) (Ypage 69).
For safety reasons, Mercedes-Benz recom-
mends only installing the following brake disks
and brake pads/linings:
Rbrake disks that have been approved by
Mercedes-Benz
Rbrake pads/linings that have been approved
by Mercedes-Benz or that are of an equivalent
standard of quality
Other brake disks or brake pads/linings can
compromise the safety of your vehicle.
Always replace all brake disks and brake pads/
linings on an axle at the same time. Always
install new brake pads/linings when replacing
brake disks.
The vehicle is equipped with lightweight brake
disks to which the wheel assembly with rim and
threaded connection is matched.
The use of brake disks other than those
approved by Mercedes-Benz can change the
track width and is subject to approval, if appli-
cable.
Shoc
k-type loads when handling the brake
discs, such as when changing wheels, can lead
to a reduction in comfort when driving with light-
weight brake discs. Avoid shock-type loads on
the lightweight brake disks, particularly on the
brake plate.
Mercedes-Benz recommends that you only use
brake fluid that has been specially approved for
your vehicle by Mercedes-Benz, or which corre-
Driving tips195
Driving and parking
Z

Useful information
i
This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of publica-
tion of the Operator's Manual. Country-spe-
cific 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 specialist
workshops (Ypage 28).
Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for the
country in which you are currently driving when
operating the on-board computer.
PLUG-IN HYBRID vehicles only:
GWARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The
operating safety of your vehicle may be
impaired. There is a risk of an accident.
Pull over as soon as it is safe to do so and
consult a qualified specialist workshop.
All vehicles, except PLUG-IN HYBRID vehi-
cles:
GWARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The
operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
If the operating safety of your vehicle is
impaired, pull over as soon as it is safe to do so.
Contact a qualified specialist workshop.
The on-board computer only shows messages or
warnings from certain systems in the multifunc-
tion display. You should therefore make sure
your vehicle is operating safely at all times.
For an overview, see the instrument panel illus- tration (
Ypage 33).
Displays and operation
Instrument cluster lighting
The light sensor in the instrument cluster auto-
matically controls the brightness of the multi-
function display. In daylight, the displays in the
instrument cluster are illuminated. A dimming
function is not possible in daylight.
The lighting in the instrument cluster, in the dis-plays and the controls in the vehicle interior can
be adjusted using the brightness control knob.
The brightness control is located between the
instrument cluster and the multimedia system
display (
Ypage 35).
XTurn the brightness control knob clockwise or
counter-clockwise.
If you turn the light switch (
Ypage 130) to the
T, ÃorL position, the brightness
will depend upon the brightness of the ambi-
ent light.
Tachometer
!
Do not drive in the overrevving range, as this
could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached.
PLUG-IN HYBRID vehicles: if you select the oper-
ating mode E-MODE, the display in the instru-
ment cluster changes from tachometer to power
meter (
Ypage 242).
256Displays and operation
On-board computer and displays