Page 192 of 1014

1913-2. Opening, closing and locking the doors and trunk
3
Operation of each component
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
Using the trunk
Observe the following precautions.
Failure to do so may cause parts of the body to be caught, resulting in seri-
ous injury.
Remove any heavy loads, such as snow and ice, from the trunk lid before
opening it. Failure to do so may cause the trunk lid to suddenly shut again
after it is opened.
When opening or closing the trunk lid, thoroughly check to make sure the
surrounding area is safe.
If anyone is in the vicinity, make sure they are safe and let them know that
the trunk is about to open or close.
Use caution when opening or closing the trunk lid in windy weather as it
may move abruptly in strong wind.
Do not attach any accessories other than genuine Lexus parts to the trunk
lid. Such additional weight on the trunk lid may cause the lid to suddenly
shut again after it is opened.
The trunk lid may suddenly shut if it is
not opened fully. It is more difficult to
open or close the trunk lid on an incline
than on a level surface, so beware of the
trunk lid unexpectedly opening or clos-
ing by itself. Make sure that the trunk
lid is fully open and secure before using
the trunk.
When closing the trunk lid, take extra
care to prevent your fingers etc. from
being caught.
When closing the trunk lid, make sure
to press it lightly on its outer surface. If
the trunk grip is used to fully close the
trunklid itmayresultinhandsorarms
Page 241 of 1014

2384-1. Before driving
GS450h_300h_OM_OM30D53E_(EE)
Trailer towing (vehicles with towing package)
Weight limits
Check the allowable towing capacity, GVM (Gross Vehicle
Mass), MPAC (Maximum Permissible Axle Capacity), and per-
missible draw bar load before towing. (P. 926)
Towing hitch/bracket
Lexus recommends the use of the Lexus hitch/bracket for your
vehicle. Other products of a suitable nature and comparable qual-
ity may also be used.
To prevent an accident
The handling of the vehicle will feel different when towing a
trailer. Beware of the 3 most common causes of towing-related
accidents: driver error, excessive speed, and overloading.
The strain of towing a trailer will have a negative impact on the
running performance, handling, fuel consumption and endurance
of your vehicle. Use the vehicle features in the correct manner and
operate the vehicle with care for safer driving and optimal comfort.
Damage and/or malfunctions that occur as a result of towing per-
formed for commercial purposes are not covered by the Lexus war-
ranty.
Ask your local authorized Lexus dealer or repairer, or another duly
qualified and equipped professional for further details before tow-
ing, as there are additional legal requirements in some countries.
Page 242 of 1014
2394-1. Before driving
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Total trailer weight and permissible drawbar load
Total trailer weight
Weight of the trailer itself plus
the trailer load should be within
the maximum towing capacity.
Exceeding this weight is dan-
gerous. (P. 926)
When the total trailer weight is
greater than the vehicle weight,
we recommend the use of a fric-
tion stabilizer (sway control
device).
Permissible drawbar load
Allocate the trailer load so that
the drawbar load is greater than
25 kg (55.1 lb.) or 4% of the
towing capacity. Do not let the
drawbar load exceed the indi-
cated weight. (P. 926)
Important points regarding trailer loads
1
2
Page 243 of 1014
2404-1. Before driving
GS450h_300h_OM_OM30D53E_(EE)
Information tag (manufacturer’s label)
Gross vehicle mass
The combined weight of the
driver, passengers, towing hitch,
total curb mass and drawbar
load should not exceed the gross
vehicle mass by more than 100
kg (220.5 lb.). Exceeding this
weight is dangerous.
Maximum permissible rear
axle capacity
The weight borne by the rear
axle should not exceed the max-
imum permissible axle capacity
by 15% or more. Exceeding this
weight is dangerous.
The values for towing capacity
were derived from testing con-
ducted at sea level. Take note
that engine output and towing
capacity will be reduced at high
altitudes.
1
2
CAUTION
When the gross vehicle mass limit or maximum permissible axle capacity is
exceeded
Do not exceed the established speed limit for towing a trailer in built-up
areas or 100 km/h (62 mph), whichever is the lower.
Page 246 of 1014

2434-1. Before driving
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Tire information
Increase the tire inflation pressure to 20.0 kPa (0.2 kgf/cm2 or bar, 3 psi)
greater than the recommended value when towing. (P. 936)
Increase the air pressure of the trailer tires in accordance with the total
trailer weight and according to the values recommended by the manufac-
turer of your trailer.
Trailer lights
Please consult at any authorized dealer or repairer, or another duly qualified
and equipped professional when installing trailer lights, as incorrect instal-
lation may cause damage to the vehicle’s lights. Please take care to comply
with your state’s laws when installing trailer lights.
Check that the turn signal lights and stoplights are operating correctly every
time you hitch up the trailer. Directly wiring up to your vehicle may damage
the electrical system and stop the lights from functioning correctly.
Break-in schedule
Lexus recommends that vehicles fitted with new power train components
should not be used for towing trailers for the first 800 km (500 miles).
Safety checks before towing
Check that the maximum load limit for the towing hitch/bracket hitch ball is
not exceeded. Bear in mind that the coupling weight of the trailer will add
to the load exerted on the vehicle. Also make sure that you will not be tow-
ing a load that exceeds the maximum permissible axle capacity.
Ensure that the trailer load is secure.
Supplementary outside rear view mirrors should be added to the vehicle if
the traffic behind cannot be clearly seen with standard mirrors. Adjust the
extending arms of these mirrors on both sides of the vehicle so that they
always provide maximum visibility of the road behind.
Maintenance
Maintenance must be performed more frequently when using the vehicle
for towing due to the greater weight burden placed on the vehicle compared
to normal driving.
Retighten all bolts securing the hitching ball and bracket after towing for
approximately 1000 km (600 miles).
Page 720 of 1014
6965-6. Using the storage featurers
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
When the cargo hooks are not in use
To avoid injury, always return the cargo hooks to their stowed positions.
NOTICE
Luggage hook weight capacity
Do not hang any object heavier than 5 kg (11 lb.) on the luggage hook.
Page 741 of 1014
717
5 5-7. Other interior features
Interior features
GS450h_300h_OM_OM30D53E_(EE)
Utility hook
To use the utility hook, push it
on.
: If equipped
CAUTION
When not in use
Keep the utility hook stowed.
Injuries may result in the event of an accident or sudden braking.
NOTICE
Utility hook weight capacity
Do not hang any object heavier than 2 kg (4.4 lb.) on the utility hook.
The utility hook may get damaged or the object hooked on the utility hook
may fall down while driving.
Page 796 of 1014

7726-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
Tire inflation pressure
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 inflating, have it checked by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
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 or has not been driven
for more than 1.5 km or 1 mile, you will get an accurate cold tire inflation
pressure reading.
Always use a tire pressure gauge.
The appearance of the tire can be misleading. In addition, tire inflation pres-
sure that is even just a few pounds off can affect ride quality and handling.
Do not reduce tire inflation pressure after driving. It is normal for tire infla-
tion 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.
Make sure to maintain proper tire inflation pressure. Tire inflation
pressure should be checked at least once per month. However,
Lexus recommends that tire inflation pressure be checked once
every two weeks. (P. 936)