2010 MERCEDES-BENZ S450 HYBRID Owner's Manual

Display messagesPossible causes/consequences and X SolutionsdMalfunctio
nThe engine stalled when driving off.XShift the automatic transmission into park position P.XSwitch off the ignition and switch it back on.XStart the combustion engine.The HYBRID system is malfunctioning. The ECO Start/Stop
function may have failed and the vehicle may accelerate
slower than usual.XContact an authorized Mercedes-Benz Center.The combustion engine cannot be started.XContact an authorized Mercedes-Benz Center.JCaution
Brakes
Overheated
Drive
CarefullyThe brake system is very hot due to extreme brake load.
Relieve the load on the brake system.XExercise a more anticipatory driving style.XUse the engine’s braking power on downgrades. Shift the
automatic transmission into a lower gear.XContinue to drive with added caution so the air stream can
cool the brakes.Practical hints23221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 23Z

What to do if ...
Lamps in instrument cluster
ProblemPossible causes/consequences and X Solutionsé
The yellow RBS
(Recuperative Brake
System) warning lamp
is on while the
combustion engine is
running. In addition, an
acoustic warning may
sound.The RBS is malfunctioning.
Risk of accident!
Brake pedal travel may be longer than usual and the braking
behavior of the vehicle may change. The ECO Start/Stop function
may also be switched off.XRead and observe messages that may appear in the
multifunction display ( Y page 20).XContinue driving with added caution.XContact an authorized Mercedes-Benz Center.$
(USA only)
J
(Canada only)
The red brake warning
lamp is on while the
combustion engine is
running. An additional
acoustic warning
sounds.The RBS is malfunctioning.
Risk of accident!
Brake pedal travel may be longer than usual and the braking
behavior of the vehicle may change.XStop the vehicle in a safe location or as soon as it is safe to do
so. Do not continue to drive.XContact an authorized Mercedes-Benz Center immediately.XRead and observe messages that may appear in the
multifunction display ( Y page 20), see Operator’s Manual.The brake fluid level in the brake fluid reservoir is too low.
Risk of accident!XStop the vehicle in a safe location or as soon as it is safe to do
so. Do not continue to drive.XContact an authorized Mercedes-Benz Center immediately.XRead and observe messages that may appear in the
multifunction display ( Y page 20), see Operator’s Manual.
Do not add brake fluid. This will not solve the problem.
÷
The yellow ABS/ESC
warning lamp flashes
while driving.The ESC, the ETS, or the ABS has come into operation because of
detected traction loss for at least one wheel.
Risk of accident!
The cruise control or the DISTRONIC PLUS is deactivated.XWhen driving off, apply as little throttle as possible.XWhile driving, ease up on the accelerator pedal.XAdapt your speed and driving to the prevailing road and weather
conditions.XDo not switch off the ESC.
Exceptions, see Operator’s Manual.24Practical hints221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 24

ProblemPossible causes/consequences and X SolutionsThe warning and
indicator lamps in the
instrument cluster fail
to come on when
switching on the
ignition.The 12-volt battery is discharged.XGet a jump start ( Y page 29).
or
XCharge the 12-volt battery ( Y page 28).
or
XContact an authorized Mercedes-Benz Center.
Combustion engine
ProblemPossible causes/consequences and X SolutionsThe combustion engine
cannot be started. The
warning and indicator
lamps in the instrument
cluster come on when
switching the ignition.
The message
Charging Hybrid
Battery Please
Wait appears in the
multifunction display.The high-voltage battery is discharged.
The discharged high-voltage battery is being charged with the
ignition switched on, provided the 12-volt battery is charged
sufficiently and an approved charge unit is connected.XRead and observe messages that may appear in the
multifunction display ( Y page 22).The combustion engine
cannot be started. The
multifunction display
does not display any
messages.The self-diagnosis has not been completed yet or the HYBRID
system is malfunctioning.XSwitch off the ignition and switch it back on.XTry to start the combustion engine once more.XIf the combustion engine cannot be started: Contact an
authorized Mercedes-Benz Center.The ECO Start/Stop
function does not start
the combustion engine
when attempting to
drive off.The ECO Start/Stop function may be malfunctioning. The lamps
in the instrument cluster are on.XShift the automatic transmission into park position P.XSwitch off the ignition and switch it back on.XStart the combustion engine.The HYBRID system is malfunctioning.XContact an authorized Mercedes-Benz Center.Practical hints25221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 25Z

RBS (Recuperative Brake System) ProblemPossible causes/consequences and X SolutionsLess brake pedal
pressure is required
and the brake pedal
travel is longer than
usual.XApply the brake pedal fully and release it.
The required brake pedal pressure and the brake pedal travel
are back to normal.The RBS is malfunctioning.
Risk of accident!XRead and observe the messages in the multifunction display and
the notes on warning and indicator lamps in the instrument
cluster ( Y page 24).The brake pedal
pulsates.The RBS is providing electronic controlled brake boost. Read and
observe the notes on the ABS/ESC warning lamp ( Y page 10).
The HYBRID system switches of automatically
ProblemPossible causes/consequences and X SolutionsThe HYBRID system
has switched off
automatically.Your vehicle was involved in an accident.
The HYBRID system remains switched off, if
R the combustion engine cannot be started again after a few
seconds
R the red SRS indicator lamp 6 in the instrument cluster
comes onXContact an authorized Mercedes-Benz Center.The HYBRID system
has switched off
automatically. An
additional message
appears in the
multifunction display.A short circuit in the HYBRID system has occurred or a plug
connection of the HYBRID system was disconnected.XRead and observe messages that may appear in the
multifunction display ( Y page 20).XContact an authorized Mercedes-Benz Center.Battery
Notes
Your vehicle is equipped with a 12-volt
battery and a high-voltage battery. The high-
voltage battery stores the power required for
the electric drive. The electric drive also
starts the combustion engine.
Have any work on the batteries performed at
an authorized Mercedes-Benz Center.
i Read and observe the safety notes
( Y page 9) and the notes on the 12-volt
battery in the Operator’s Manual.26Practical hints221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 26

GWarning!
The electrolyte, i.e. the battery fluid, is toxic
and caustic. Do not allow this fluid to come in
contact with eyes, skin or clothing, for
example in case of an accident.
In case it does, immediately flush affected
area with water and seek medical help
immediately.
For information on the location of the 12-volt
battery and the high-voltage battery, see
(Y page 13).
! Deep discharge caused by prolonged
periods of the vehicle not being used, can
damage the high-voltage battery.
During such periods, operate the vehicle
every 4 weeks for several minutes in order
to charge the high-voltage battery.
During the charging process, switch off
electrical consumers that are currently not
needed, e.g. climate control system or seat
heating.
If necessary, get a jump start.
GWarning!
Inhalation of exhaust gas is hazardous to your
health. All exhaust gas contains carbon
monoxide (CO), and inhaling it can cause
unconsciousness and lead to death. Do not
run the engine in confined areas (such as a
garage) which are not properly ventilated.
If you do not intend to operate your vehicle
for an extended period of time, contact an
authorized Mercedes-Benz Center about
steps you need to observe.
Removing/installing high-voltage
battery cover
XEngage the electronic parking brake.XShift the automatic transmission into park
position P.
XSwitch off the ignition.
The green or yellow READY indicator lamp
(Y page 16) in the instrument cluster goes
out.
XRemove the SmartKey from the starter
switch or remove the SmartKey with
KEYLESS-GO from the vehicle.
XObserve the safety notes on the danger of
electric shock in this manual.
XObserve the safety notes regarding the
hood in the Operator's manual.
XOpen the hood, see Operator's Manual.
Removing
XTurn locks 1 clockwise by 90°.XLift cover 2 as indicated by the arrows and
remove it forward as seen in driving
direction.
XStore cover 2 in the trunk for example.
Installing
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XPlace cover 1 onto the high-voltage
battery carefully.
XPush holder 2 onto pin 3.XTurn locks 4 counterclockwise by 90°.
The cover is locked.
Removing/installing jump start
contact cover
XRemove the high-voltage battery cover, see
(Y page 27).
Removing
XDisengage tabs :.XRemove cover ;.XStore cover 2 in the trunk for example.
Installing
XPosition cover ;.XPress down on cover ; until tabs 1
engage.
XInstall the high-voltage battery cover.! The cover must be positioned and
installed properly. Otherwise moisture
and/or dirt may impair fuse operation.
XClose the hood.
Charging the batteries
Charging the 12-volt battery
GWarning!
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during
charging and could cause an explosion that
may result in personal injury, paint damage or
corrosion.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available. It permits the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Center for
information and availability.
Charge battery in accordance with the
separate instructions for the accessory
battery charger.
XRemove the high-voltage battery cover
(Y page 27).
XRemove the jump start terminal cover
(Y page 28).
XFollow the instructions in the separate
operating instructions of the charge unit.
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XConnect the positive terminal clamp of the
charge unit with jump start terminal 1.
XConnect the negative terminal clamp of the
charge unit with jump start terminal 2.
XCharge the 12-volt battery.
Charging the high-voltage battery
With the ignition switched on, the discharged
high-voltage battery is being charged via the
voltage transformer, provided the 12-volt
battery is charged sufficiently. During the
charging procedure the charge unit must
remain connected to the jump start
terminals.
iThe high-voltage battery can only be
charged via the 12-volt battery of your
vehicle. Observe the safety notes
(Y page 9).
XSwitch on the ignition.
The lamps in instrument cluster are on. The
message Charging Hybrid Battery
Please Wait appears in the multifunction
display.
Start the combustion engine when the
message Engine Can Now Be Started
appears in the multifunction display after a
few minutes.
Disconnecting the charge unitXDisconnect the charge unit. Follow the
instructions in the separate operating
instructions of the charge unit.
XInstall the jump start terminal cover
(Y page 28).
XInstall the high-voltage battery cover
(Y page 27).
XClose the hood.XDrive the vehicle for some time in order to
charge the 12-volt battery and the high-
voltage battery.
Jump starting
When the 12-volt battery is discharged, the
combustion engine can be started with
jumper cables and the battery of another
vehicle.
Observe the following:
RJump starting should only be performed
when the combustion engine and the
catalytic converter are cold.
RDo not jump start if the battery is frozen.
Let the battery thaw out first.
ROnly jump start from batteries with the
same voltage rating (12 V). Jump starting
with a more powerful battery could damage
the vehicle’s electrical system, which is not
covered by the Mercedes-Benz Limited
Warranty.
ROnly use jumper cables with sufficient
cross-section and insulated terminal
clamps.
RAlways make sure the jumper cables are
not on or near pulleys, fans or other parts
that move when an engine is started or
running.
RShould the battery be drained completely,
let the donating power source charge the
vehicle for several minutes before
reattempting the starting process.
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iJumper cables and additional information
on jump starting are available at any
authorized Mercedes-Benz Center.
! Jump starting should only be performed
using the jump-start terminals located in
the engine compartment.
Avoid repeated and lengthy starting
attempts.
Do not attempt to start the engine using a
battery quick-charge unit.
If the engine does not run after several
unsuccessful starting attempts, have it
checked at the nearest authorized
Mercedes-Benz Center.
Excessive unburned fuel generated by
repeated failed starting attempts may
damage the catalytic converter and may
present a fire risk.
Make sure the jumper cables do not have
loose or missing insulation.
Make sure the cable clamps do not touch
any other metal part while the other end is
still attached to a battery.
Connecting the jumper cables
XMake sure the two vehicles do not touch.XRemove the high-voltage battery cover
(Y page 27).
XRemove the jump start terminal cover
(Y page 28).
Your vehicle is equipped with two jump start
terminals in the engine compartment.
XConnect jump start terminal = with
positive terminal ; of the external battery
with a jumper cable. Clamp the jumper
cable to jump start terminal 3 first.
XConnect negative terminal 1 of the
external battery with jump start terminal
4 with a jumper cable. Clamp the jumper
cable to negative terminal 1 of the
external battery first.
Starting the combustion engine
XStart the engine of the vehicle with the
charged battery and run it at an engine
speed slightly above idle speed.
XSwitch on the ignition of your vehicle.
The lamps in the instrument cluster come
on. Wait to start the combustion engine, if
the message Charging Hybrid Battery
Please Wait appears in the multifunction
display.
Start the combustion engine only after the
message Engine Can Now Be Started
has appeared in the multifunction display.
This may take a few minutes.
If no messages appear in the
multifunctional display, you can start the
combustion engine directly.
XAfter the combustion engine of your vehicle
has been started, leave the engines of both
vehicles running at idle speed.
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