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167
4-1. Before driving
LEXUS NX300h Owners Manual_USA_M78578_en
4
Driving
■ GCWR (Gross Combination
Weight Rating)
The maximum allowable gross combi-
nation weight. The gross combination
weight is the sum of the total vehicle
weight (including the occupants, cargo
and any optional equipment installed
on the vehicle) and the weight of the
trailer being towed (including the
cargo in the trailer).
WARNING
● Do not apply the brakes suddenly as
you may skid, resulting in jackknifing
and loss of vehicle control. This is
especially true on wet or slippery sur-
faces.
● Do not exceed the trailer hitch assem-
bly weight, gross vehicle weight, gross
axle weight and trailer tongue weight
capacities.
● Do not use the dynamic radar cruise
control system when trailer towing.
● Slow down and downshift before
descending steep or long downhill
grades. Do not make sudden down-
shifts while descending steep or long
downhill grades.
● Vehicle-trailer instability is more likely
on steep long downhills. Before
descending steep or long downhill
grades, slow down and downshift. Do
not make sudden downshifts when
descending steep or long downhill
grades. Avoid holding the brake pedal
down too long or applying the brakes
too frequently. This could cause the
brakes to overheat and result in
reduced braking efficiency.
● Do not tow a trailer when the compact
spare tire is installed on your vehicle.
■ When towing a trailer
Lexus recommends trailers with brakes
that conform to any applicable federal
and state/provincial regulations.
● If the gross trailer weight exceeds
unbraked TWR, trailer brakes are
required. Lexus recommends trailers
with brakes that conform to all applica-
ble federal and state/provincial regula-
tions.
● Never tap into your vehicle’s hydraulic
system, as this will lower the vehicle’s
braking effectiveness.
● Never tow a trailer without using a
safety chain securely attached to both
the trailer and the vehicle. If damage
occurs to the coupling unit or hitch
ball, there is danger of the trailer wan-
dering into another lane.
NOTICE
■ When installing a trailer hitch
Use only the position recommended by
your Lexus dealer. Do not install the
trailer hitch on the bumper; this may
cause body damage.
■ Do not directly splice trailer lights
Do not directly splice trailer lights.
Directly splicing trailer lights may dam-
age your vehicle’s electrical system and
cause a malfunction.
Towing related terms
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