weight Lexus GS450h 2007 Using the hands-free system (for cellular phone) / LEXUS 2007 GS450H THROUGH JUNE 2006 PROD. OWNER'S MANUAL (OM30727U)

170
2-5. Driving information
Cargo and luggage
Capacity and distribution
Cargo capacity depends on the total weight of the occupants.
(Cargo capacity) = (Total load capa city) — (T
otal weight of occupants)
Steps for Determining Correct Load Limit—
(1) Locate the statement “The combined weight of occupants and car
go should never exceed XXX kg or XXX lbs.” on your vehicle’s
placard.
(2) Determine the combined weight of the driv
er and passengers that
will be riding in your vehicle.
(3) Subtract the combined weight of the driv
er and passengers from
XXX kg or XXX lbs.
(4) The resulting figure equals the av ailable amount of car
go and lug-
gage load capacity.
For example, if the “XXX” amount equals 1400 lbs. and ther
e will be
five 150 lb passengers in your vehicl e, the amount of available cargo
and luggage load capacity is 650 lbs. (1400 - 750 (5 150) = 650
lbs.)
(5) Determine the combined weight of luggage and car
go being
loaded on the vehicle.
That weight may not safely exceed the available cargo and luggage
load capacity calculated in Step 4.
Take notice of the following informat ion about storage precautions, cargo
capacity and load.
● Stow cargo and luggage in the trunk whenever possible. Be sure
all items are secured in place.
● Be car
eful to keep the vehicle level. Placing the weight as far for-
ward as possible helps maintain vehicle balance.
● F
or better fuel economy, do not carry unnecessary weight.

171
2-5. Driving information
2
When driving
(6) If your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Co nsult this manual to determine how
this reduces the available cargo and luggage load capacity of your
vehicle. ( P. 1 7 3)
Example on your vehicle
Cargo capacity
Total load capacity
When 2 people with the combined wei ght of 366 lb
. (166 kg) are riding
in your vehicle, which has a total load capacity of 815 lb. (370 kg), the
available amount of cargo and luggag e load capacity will be as follows:
815 lb. — 366 lb. = 449 lb. (370 kg —166 kg = 204 kg)
In this condition, if 3 mo re passengers with the combined weight of 388 lb.
(176 kg) get on, the available cargo and luggage load will be reduced as fol -
lows:
449 lb. — 388 lb. = 61 lb. (204 kg — 176 kg = 28 kg)
As shown in the above example, if the number of occupants incr
eases,
the cargo and luggage load equaling the combined weight of the occu-
pants who got on later, by an amount. In other w
ords, if an increase in the
number of occupants causes an excess of the total load capacity (com -
bined weight of occupants plus car go and luggage load), y
ou must
reduce the cargo and luggage on your vehicle.

172
2-5. Driving information
CAUTION
■Storage precautions
●Do not place anything on the package tray behind the rear seatback. 
Such items may be thrown about and possib ly injure people in the vehicle during
sudden braking or in an accident.
●Do not drive with objects on top of the instrument panel. 
They may interfere with the driver’s field of view or move during sharp accelera-
tion or turning, thus impairing the driver ’s control of the vehicle. In an accident
they may injure the vehicle occupants.
●Secure all items in the occupant compartment, as they may shift and injure some-
one during an accident or sudden braking.
■Weight of the load
●Improper loading may cause deterioration of steering or braking control result-
ing in an accident which may cause death or serious injury.
●Do not exceed the maximum axle weight ra ting or the total vehicle weight rating.
●Even if the total load of occupant's weight and the cargo load is less than the total
load capacity, do not apply the load unevenly. Improper loading may cause dete-
rioration of steering or braking control which may cause death or serious injury.

173
2-5. Driving information
2
When driving
Vehicle load limits
■Total load capacity and seating capacity
These details are also described on the ti
re and loading information label. 
(  P. 3 8 5
)
CAUTION
■Overloading the vehicle
Do not overload the vehicle. 
It may not only cause damage to the tire s, but also degrade steering and braking
ability, resulting in an accident.
Vehicle load limits include total load capacity, seating capacity, towing
capacity and cargo capacity.
■ Total load capacity: 815 lb. (370 kg)
Total load capacity means the comb ined w
eight of occupants, cargo
and luggage.
■ Seating capacity: 5 occupants (F
ront 2, Rear 3)
Seating capacity means the maximu m number of occupants whose
estimated a
verage weight is 150 lb. (68 kg) per person.
Even if the number of occupants ar e within the seating capacity
, do
not exceed the total load capacity.
■ T
owing capacity
Lexus does not recommend towing a trailer with your vehicle.
■ Car
go capacity
Cargo capacity ma y incr
ease or decrease depending on the weight
and the number of occupants.

325
3-7. Other interior features
3
Interior features
NOTICE
■To prevent seat heater damage
Do not put unevenly weighted objects on the seat and do not stick sharp objects
(needles, nails, etc.) into the seat.
■To prevent 12 volt battery discharge
Turn the switches off when the hybrid system is off.

327
3-7. Other interior features
3
Interior features
NOTICE
■To prevent seat heater damage
Do not put unevenly weighted objects on the seat and do not stick sharp objects
(needles, nails, etc.) into the seat.
■To prevent 12 volt battery discharge
Turn the switches off when the hybrid system is off.

377
4-3. Do-it-yourself maintenance
4
Maintenance and care
Initializing the tire pressure warning system
■The tire pressure warning system must be initialized in the following
circumstances:
● When r
otating the tires on vehicles differing with front and rear tire
inflation pressures.
● When changing the tir
e inflation pressure by changing traveling
speed or load weight, etc.
● When changing the tir
e size.
When the tire pressure warning sys tem is initializ
ed, the current tire
inflation pressure is set as the pressure benchmark.
■ Ho
w to initialize the tire pressure warning system
Park the vehicle in safe place and turn the po
wer switch to “OFF”
mode.
While the vehicle is moving, initialization is not performed.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. ( P. 4 8 7 )
Make sure to adjust the tire pressure to the specified cold tire inflation
pressure level. The tire pressure warning system will operate based on
this pressure level.
Turn the power switch to “IG-ON” mode.
STEP1
STEP2
STEP3

380
4-3. Do-it-yourself maintenance
■Maximum load of tire
Check that the maximum load of the replaced tire is greater than 1 /2 of the Gross
Axle Weight Ratings (GAWR) of either the front axle or the rear axle, whichever is
greater. 
As for the maximum load of the tire, see the load limit at maximum cold tire inflation
pressure mentioned on the sidewall of the tire, and as for the Gross Axle Weight
Ratings (GAWR), see the Certification Label. (
P. 385, 492).
■Tire types
1 Summer tires
Summer tires are high-speed performance tires best suited to highway driving
under dry conditions. Since summer tires do not have the same traction perfor-
mance as snow tires, summer tires are in adequate for driving on snow-covered
or icy roads. For driving on snow-covered roads or icy roads, the use of snow tires
is recommended. When installing snow tires, be sure to replace all four tires.
2 All season tires All season tires are designed to provide better traction in snow and to be ade-
quate for driving in most winter conditions , as well as for use year round. All sea-
son tires, however, do not have adequa te traction performance compared with
snow tires in heavy or loos e snow. Also, all season tires fall short in acceleration
and handling performance compared with summer tires in highway driving.
3Snow tires For driving on snow-covered roads or icy roads, we recommend using snow tires.
If you need snow tires, select tires of the same size, construction and load capac-
ity as the originally installed tires. Since your vehicle has radial tires as original
equipment, make sure your snow tires also have radial construction. Do not install
studded tires without first checking loca l regulations for possible restriction.
Snow tires should be installed on all wheels. ( P. 1 74 )
■Initializing the tire pressure warning system
Initialize the tires with the tire inflatio n pressure adjusted to the specified level.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
●Reduced fuel efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent refilling, have it checked by your Lexus dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold. 
If your vehicle has been parked for at least 3 hours and has not been driven for
more than 1 mile or 1.5 km, you will get an accurate cold tire inflation pressure
reading.
●Always use a tire pressure gauge. 
The appearance of the tire can be misleadi ng. In addition, tire inflation pressures
that are even just a few pounds off can degrade ride and handling.
●Do not bleed or reduce tire inflation pressure after driving. It is normal for the
tire inflation pressure to be higher after driving.
●Never exceed the vehicle capacity weight. 
Passengers and luggage weight should be placed so that the vehicle is bal-
anced.

389
4-3. Do-it-yourself maintenance
4
Maintenance and care
Wheels
■When replacing wheels
The wheels of your Lexus are equipped with tire pressure warning valves and trans-
mitters that allow the tire pressure warning system to provide advanced warning in
th
e event of a loss in tire inflation pressu re. Whenever wheels are replaced, the tire
pressure warning valves and transmitters must be switched over from the old
wheels. ( P. 3 76 )
If a wheel is bent, cracked or heavily corroded, it should be replaced. 
Otherwise, the tire may separate from
the wheel or cause loss of handling
control.
■ Wheel selection
When replacing wheels, care should be taken to ensure that they
ar

e equivalent to those removed in load capacity, diameter, rim
width, and offset.
Replacement wheels are available at your Lexus dealer.
Lexus does not recommend using:
• Wheels of different sizes or types
• Used wheels
• Bent wheels that have been straightened
• Lexus wheels with after market chrome plating
■ Aluminum wheel pr
ecautions
● Use only L
exus wheel nuts and wr enches designed for use with
your aluminum wheels.
● When r
otating, repairing or changi ng your tires, check that the
wheel nuts are still tight after driving 1000 miles (1600 km).
● Be car
eful not to damage the aluminum wheels when using tire
chains.
● Use only L
exus genuine balance weights or equivalent and a
plastic or rubber hammer when balancing your wheels.