2010 MERCEDES-BENZ ML450 HYBRID belt

Introduction
The HYBRID technology combines an
economical combustion engine with a
powerful hybrid transmission. The HYBRID
system selects the most efficient operating
mode
for each driving situation automatically.
You can drive the vehicle in the usual manner.
The HYBRID system turns the combustion
engine off as often as possible in order to save
fuel.
Depending on various conditions such as the
charging level of the high-voltage battery or
the operating temperature, the vehicle can
run on electrical energy alone. These
conditions as well as the degree to which the
driver accelerates determine the vehicle
speed and range that can be achieved for all-
electrical driving. G
Warning!
When the READY indicator 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 as long as the ignition is
switched on. When you open the driver’s door
and unbuckle the seat belt with the READY
indicator on, while the automatic
transmission is in position N or P, the
combustion engine starts automatically.
Therefore, always do the following before
leaving the vehicle:
R Engage the parking brake.
R Shift the automatic transmission into park
position P.
R Switch off the ignition. The READY indicator
goes out. Driving off and accelerating consumes the
most energy. Thus, the hybrid transmission
supports the combustion engine with the
energy

stored in the high-voltage battery. The
energy is also used for electrical driving, for
operation of the electric compressor of the
cooling system and to support the 12-volt on-
board power supply. The hybrid drive thereby
contributes significantly to the fuel economy
of your vehicle.
For information on driving with HYBRID, see
(Y page 16).
The current operating mode of the HYBRID
system can be displayed in the instrument
cluster (Y page 13) and in the COMAND
display ( Y page 13).
The COMAND can also display a chart of the
fuel consumption and the electric power that
has been generated ( Y page 15). RBS (Recuperative Brake System)
With
the RBS activated (Y page 9), the hybrid
transmission functions as a generator when
coasting and braking. HYBRID converts the
energy of movement into electric power and
stores it in the high-voltage battery. The high-
voltage battery does not require additional
charging by other means. Controls in detail
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G
Warning!
When the READY indicator 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 as long as the ignition is
switched on. When you open the driver’s door
and unbuckle the seat belt with the READY
indicator on, while the automatic
transmission is in position N or P, the
combustion engine starts automatically.
Therefore, always do the following before
leaving the vehicle:
R Engage the parking brake.
R Shift the automatic transmission into park
position P.
R Switch off the ignition. The READY indicator
goes out.
The combustion engine turns off
automatically when the system determines
that it is not needed. The combustion engine
does not turn off automatically when
R the operation strategy requires that the
combustion engine is running
R the self-diagnosis of the combustion
engine management is still running
R the combustion engine is running below or
above the operating temperature
R the catalytic converter is running below the
operating temperature
R the vehicle is being driven up an extremely
steep incline
R the hybrid components are below or above
their operating temperature
R the accelerator pedal is being depressed to
hard
R the vehicle speed is above 34 mph
(55 km/h)
R the automatic transmission is
malfunctioning R
the hood is open
R the high-voltage battery is not charged
sufficiently Driving off
G
Warning!
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.
Depress the brake pedal and shift the
automatic transmission into drive position D
or reverse gear R. If the message Depress
brake to shift out of P. appears in the
multifunction display:
X Depress 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 24).
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. Controls in detail
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R
The hybrid transmission supports the
combustion engine when driving off and
when accelerating.
R The hybrid transmission functions as a
generator when coasting the vehicle with
the automatic transmission in drive
position D and during braking.
i For additional general driving
instructions, refer to the Operator’s
Manual. Parking
G
Warning!
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. G
Warning!
When the READY indicator 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 as long as the ignition is
switched on. When you open the driver’s door
and unbuckle the seat belt with the READY
indicator on, while the automatic
transmission is in position N or P, the
combustion engine starts automatically.
Therefore, always do the following before
leaving the vehicle: R
Engage the parking brake.
R Shift the automatic transmission into park
position P.
R Switch off the ignition. The READY indicator
goes out.
X Engage the parking brake.
The parking brake indicator lamp $
(USA only) or ! (Canada only) in the
instrument cluster comes on.
X Shift the automatic transmission into park
position P.
X Switch off the ignition.
The READY indicator goes out.
i For more information on parking and on
turning off the combustion engine, refer to
the Operator’s Manual. Automatic transmission
Automatic shift program
Program mode selector switch
E Economy For fuel-efficient
operation
S Sport For sporty driving18
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Vehicle specification ML 450 HYBRID
(164.195)
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 ΜL 450 HYBRID
Engine, type
272
Mode of operation
4-stroke engine,
gasoline injection No. of cylinders
6
Bore
3.66 in (92.90 mm)
Stroke
3.39 in (86.00 mm)
Total piston
displacement
213.5 cu in
(3 498 cm 3
) Compression
ratio
11.5:1
Output acc. to
SAE J 1349
1 275 hp/6
000 rpm
(205 kW/6 000 rpm) Maximum torque
acc.

to SAE J 1349 258 lb-ft/
3 000 - 5 500
(350 Nm/
3 000 - 5 500 rpm) Maximum engine
speed
6 000 rpm
Firing order
1-4-3-6-2-5
Poly-V-belt
2 398 mm
Hybrid ΜL 450 HYBRID
Type
Full hybrid
Concept
Two mode
Output EMA
83 hp
(62 kW) Hybrid ΜL 450 HYBRID
Output EMB
80 hp
(60 kW) Maximum torque
EMA
173 lb-ft (235 Nm)
Maximum torque
EMB
192 lb-ft (260 Nm)
System power
335 hp (250 kW)
381 lb-ft (517 Nm) Electrical system ΜL 450 HYBRID
High-voltage
battery
288 V/45 kW
Battery
12 V/70 Ah
Spark plugs, type
Bosch Y 7 MPP33
Spark plugs,
electrode gap
0.031 in (0.8 mm)
Spark plugs,
tightening torque
15 - 18 lb-ft
(20 - 25 Nm) Main dimensions ΜL 450 HYBRID
Overall vehicle
length
188.5 in (4
788 mm) Overall vehicle
width
2 83.6 in (2
124 mm) Overall vehicle
height
69.8 - 73.0 in
(1 774 - 1
854 mm) Wheelbase
114.8 in (2
915 mm) Track, front
64.7 in (1
644 mm) Track, rear
64.8 in (1
647 mm) Ground clearance
7.3 - 10.3 in
(186 - 261 mm)
Turning circle
39.0 ft (11.6 m)
1
Premium fuel required. Performance may vary with fuel octane rating.
2 Exterior rear view mirrors folded out. 36
Technical data 164_ZA; 2; 2, en-US
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