Enviromental protection
Have the high-voltage battery disposed of in
an environment-friendly manner by an
authorized Mercedes-Benz Center.GWarning!
The HYBRID system is energized by high
voltage. The components of the HYBRID
system are indicated by yellow warning
labels. High-voltage cables are orange-
colored.
You could be seriously or even fatally injured
when you
R tamper with components or high-voltage
cables of the HYBRID system
R touch components or high-voltage cables
of the HYBRID system after the vehicle has
been involved in an accident
R touch damaged components of the HYBRID
system
Do not remove the high-voltage battery of the
HYBRID system. Have the high-voltage
battery disposed of in an environment-
friendly manner by an authorized Mercedes-
Benz Center.
i For more information on the high-voltage
battery, see ( Y page 26).
Operating safety
GWarning!
When your vehicle is in electric drive mode the
engine produces significantly lower noise
levels. Other motorists or pedestriants,
especially those who are visually or hearing
impaired, may be unable to hear your vehicle
while it is in motion. This is particularly true
when driving at lower speeds and during
parking maneuvers. At all times, it is the
responsibility of the driver to be aware of their
surroundings, especially in these low speed
situtations. Otherwise other road users could
be seriously or fatally injured.GWarning!
Have all work on the vehicle, especially safety-
related work, work on safety-relevant
systems, work on the HYBRID system as well
as maintenance work, carried out by an
authorized Mercedes-Benz Center.
i For more information on operating safety,
refer to the Operator’s Manual.
Vehicle modifications
GWarning!
Improper work on the HYBRID system or
modifications of the vehicle can cause vehicle
systems to cease functioning properly. You
could lose control over the vehicle and cause
an accident.
Therefore, have work on the HYBRID system
and modifications of the vehicle such as
installation or modification of vehicle
equipment carried out by an authorized
Mercedes-Benz Center
i For more information on operating safety,
refer to the Operator’s Manual.
Trailer hitch
! Retrofitting the vehicle with a trailer hitch
is not permissible. Damage caused by
retrofitting the vehicle with a trailer hitch is
not covered by the Mercedes-Benz Limited
Warranty.
Introduction7221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 7Z
Displaying fuel consumption and
generated electric power
The COMAND display indicates the fuel
consumption and the generated electric
power for the last 15 minutes of driving.
XSelect Vehicle Q Hybrid Q
Consumption.
1Fuel consumption2Generated electric power
Each bar in the chart represents the average
value for 1 minute.
Average fuel consumption 1 can differ from
the fuel consumption that is displayed in the
From Start submenu in the Trip menu.
Resetting values
The values are reset together when resetting
the trip computer in the From Start
submenu. Refer to the Operator’s Manual.
Driving and parking
Safety notes
GWarning!
When your vehicle is in electric drive mode the
engine produces significantly lower noise
levels. Other motorists or pedestriants,
especially those who are visually or hearing
impaired, may be unable to hear your vehicle
while it is in motion. This is particularly true
when driving at lower speeds and during
parking maneuvers. At all times, it is the
responsibility of the driver to be aware of their
surroundings, especially in these low speed
situtations. Otherwise other road users could
be seriously or fatally injured.
GWarning!
Make sure absolutely no objects are
obstructing the pedals’ range of movement.
Keep the driver’s footwell clear of all
obstacles. If there are any floormats or
carpets in the footwell, make sure the pedals
still have sufficient clearance.
During sudden driving or braking maneuvers
the objects could get caught between or
under the pedals. You could then no longer
brake or accelerate. This could lead to
accidents and injury.
Starting the engine
:Green or yellow READY indicator lamp XSwitch on the ignition.XApply the brake pedal fully and release it to
activate the RBS.
The RBS is activated. For more information
on the RBS, see (Y page 10).
XObserve the notes on “Starting the engine”
in the Operator’s Manual and start the
combustion engine.
The vehicle is operational when the green
or yellow READY indicator lamp : is
illuminated.
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Brake to Shift from 'P' appears in the
multifunction display:XDepress the brake pedal with somewhat
greater force and select the desired
transmission position.
i Read and observe messages that may
appear in the multifunction display
( Y page 20)
For more information on driving off, refer to
the Operator’s Manual.
Driving
Driving tips
R Think ahead and keep sufficient distance.
R Avoid frequent and rapid acceleration as
well as abrupt braking.
R In semi-electric operation, when driving off
and when accelerating, the electric drive
supports the combustion engine.
R The electric drive functions as a generator
when coasting the vehicle with the
automatic transmission in drive position D
and during braking.
i For more information on the ECO Start/
Stop function, see ( Y page 17). For
additional general driving instructions,
refer to the Operator’s Manual.
Driving with activated DISTRONIC
PLUS
When the DISTRONIC PLUS recognizes that
the preceding vehicle stops, it will brake your
vehicle to a complete stop. The combustion
engine is turned off automatically only after
both vehicles have come to a complete stop.
The green READY indicator lamp in the
instrument cluster continues to be
illuminated.
i For more information on the ECO Start/
Stop function, see ( Y page 17). For
additional information on the DISTRONIC
PLUS, refer to the Operator’s Manual.
Parking
GWarning!
When your vehicle is in electric drive mode the
engine produces significantly lower noise
levels. Other motorists or pedestriants,
especially those who are visually or hearing
impaired, may be unable to hear your vehicle
while it is in motion. This is particularly true
when driving at lower speeds and during
parking maneuvers. At all times, it is the
responsibility of the driver to be aware of their
surroundings, especially in these low speed
situtations. Otherwise other road users could
be seriously or fatally injured.
GWarning!
When the green READY indicator lamp in the
instrument cluster is on while the combustion
engine is off, the combustion engine has been
turned off automatically. All vehicle systems
continue to be active. When you open the
driver’s door, unbuckle the seat belt, or take
your foot off of the brake pedal, the
combustion engine starts automatically. The
vehicle could start to drive off. An accident
causing serious or even fatal personal injury
to you and/or others could be the result.
Therefore, always do the following before
leaving the vehicle:
R Engage the electronic parking brake.
R Shift the automatic transmission into park
position P.
R Switch off the ignition. The green or yellow
READY indicator lamp goes out.
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Text messages Display messagesPossible causes/consequences and X SolutionsApply
Braketo Shift
from 'P'You have attempted to shift the automatic transmission into
drive position D, reverse gear R or neutral position N without
depressing the brake pedal or without depressing it fully.XDepress the brake pedal fully.Service
RequiredDo not
turn
engine
off or
start
engine
againThe HYBRID system is malfunctioning. The engine speed of
the combustion engine may be limited to 2000 rpm. When
you turn the combustion engine off, it cannot be restarted.
The ECO Start/Stop function is not available. In addition, an
acoustic warning sounds.XDo not turn off the combustion engine.XContact an authorized Mercedes-Benz Center.Engine
Can Now
Be StartedThe high-voltage battery has been charged via the voltage
transformer automatically.XStart the combustion engine and drive the vehicle for some
time in order to charge the 12-volt battery and the high-
voltage battery.Practical hints21221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 21Z
Symbol messages Display messagesPossible causes/consequences and X SolutionsLThe hood is open. The combustion engine cannot be started.
Risk of accident!XClose the hood.cCharging
Hybrid
Battery
Please
WaitThe high-voltage battery is discharged. You have switched on
the ignition while the 12-volt battery was being charged with
an approved charge unit or while jump starting the vehicle.
The high-voltage battery is being charged via the voltage
transformer automatically. The message Engine Can Now
Be Started appears in the multifunction display after a few
minutes.XStart the combustion engine.XDisconnect the charge unit and drive the vehicle for some
time in order to charge the 12-volt battery and the high-
voltage battery.
If the display message Engine Can Now Be Started does
not appear after a few minutes:
XTry to start the combustion engine.XIf the combustion engine cannot be started: Contact an
authorized Mercedes-Benz Center.cMalfunctio
nThe combustion engine cannot be started. In addition, an
acoustic warning sounds.XContact an authorized Mercedes-Benz Center.The combustion engine is running and the HYBRID system is
malfunctioning. In addition, an acoustic warning sounds.XContact an authorized Mercedes-Benz Center.The combustion engine is running and the HYBRID system is
malfunctioning. In addition, an acoustic warning sounds.
Extreme operating conditions such as driving through
standing water can cause very high moisture in the engine
compartment.
The message disappears once the engine compartment is dry.22Practical hints221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 22
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
Identification labels
i For more information on the identification
labels, refer to the Operator’s Manual.
Electric drive
The engine number is engraved on the
housing of the electric drive. For more
information contact an authorized Mercedes-
Benz Center.
Vehicle specification S 400 HYBRID
(221.195)
The quoted data apply only to the standard
vehicle. Contact an authorized Mercedes-
Benz Center for the corresponding data of all
special bodies and special equipment.
Engine S 400 HYBRIDEngine, type272Mode of operation4-stroke engine,
gasoline injectionNo. of cylinders6Bore3.66 in (92.90 mm)Stroke3.39 in (86.00 mm)Total piston
displacement213.5 cu in
(3 498 cm 3
)Compression
ratio11.7:1Output acc. to
SAE J 1349 1275 hp/6
000 rpm
(205 kW/6 000 rpm)Maximum torque
acc. to SAE J 1349258 lb-ft/
3 000 - 5 500
(350 Nm/
3 000 - 5 500 rpm)Engine S 400 HYBRIDMaximum engine
speed6 500 rpmFiring order1-4-3-6-2-5Poly-V-belt2 404 mmElectric drive S 400 HYBRIDTypePermanent-field
synchronous motorOutput20 hp (15 kW)Maximum
starting torque160 NmElectrical system S 400 HYBRIDAlternator14 V/180 ABattery12 V/95 AhSpark plugs, typeBosch Y 7 MPP33Spark plugs,
electrode gap0.031 in (0.8 mm)Spark plugs,
tightening torque15 - 18 lb-ft
(20 - 25 Nm)Main dimensions S 400 HYBRIDOverall vehicle
length206.7 in (5 250 mm)Overall vehicle
width 283.5 in (2
120 mm)Overall vehicle
height58.2 in (1 479 mm)Wheelbase124.6 in (3 165 mm)Track, front63.0 in (1 600 mm)1
Premium fuel required. Performance may vary with fuel octane rating.
2 Exterior rear view mirrors folded out.32Technical data221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 32
S 400 HYBRID719" wheelsFront axleAMG rims (light alloy)
Wheel offset8.5 J x 19 H2
1.69 in (43 mm)All-season tires 3255/40 R19 100V XL (Extra Load)
M+SRear axleAMG rims (light alloy)
Wheel offset9.5 J x 19 H2
1.69 in (43 mm)All-season tires 3,6275/40 R19 101V M+S
Spare wheel
S 400 HYBRIDRim (steel)4.5 B x 19 H2Wheel offset1.38 in (35 mm)Minispare tire6T 155/70 R19 113MRecommended tire inflation pressure61 psi (4.2 bar)Capacities
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by Mercedes-
Benz.
For information on tested and approved
products, contact an authorized Mercedes-
Benz Center or visit www.mbusa.com (USA
only).GWarning!
Comply with all valid regulations with respect
to handling, storing, and disposing of service
fluids. Otherwise you could endanger persons
or the environment.
Keep service fluids out of the reach of
children.
For health reasons, you should prevent
service fluids from coming into direct contact
with your skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.7 Vehicles with AMG Sport Package.
3 Radial-ply tires.
6 Must not be used with snow chains.34Technical data221_ZA; 1; 21, en-USd2ureepe,Version: 2.11.8.12009-05-13T13:56:31+02:00 - Seite 34