Lexus GX460 2010 Using The Bluetooth Audio System / LEXUS 2010 GX460 OWNERS MANUAL (OM60E69U)

370
2-5. Driving information
GX460_U.S.A. (OM60E69U)
Selecting a trailer ballUse the correct trailer ball for your application. Trailer ball load rating
Matches or exceeds the gross
trailer weight rating of the trailer.
Ball diameter
Matches the size of the trailer cou-
pler. Most couplers are stamped
with the required trailer ball size.
Shank length
Protrudes beyond the bottom of
the lock washer and nut at least 2
threads.
Shank diameter
Matches the ball mount hole diam-
eter size.
Connecting trailer lights
Use the wire harness stored in the
rear end under body.

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2-5. Driving information
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When driving
GX460_U.S.A. (OM60E69U)
■When connecting and disconnecting a trailer
●ConnectingSet the rear height control air suspension to N mode.
Turn off the “ENGINE START STOP” switch or the rear height control air
suspension.
Connect the trailer.
Turn on the switch that was turned off on .
●DisconnectingSet the rear height control air suspension to N mode.
Turn off the rear height control air suspension.
Turn off the “ENGINE START STOP” switch.
Set the supporting leg of the trailer on the ground and raise the hitch by 4
in. (100 mm)
Turn on the “ENGINE START STOP” switch.
Turn on the rear height control air suspension.
Wait until vehicle height is stabilized.
Make sure the hitch is disconnected. If the hitch does not disconnect, raise the hitch
higher and repeat steps 2 through 7.
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2-5. Driving information
GX460_U.S.A. (OM60E69U)
■Before towing
Check that the following conditions are met:
●The vehicle’s tires are properly inflated. (P. 76 0 )
●Trailer tires are inflated according to the trailer manufacturer’s recommenda-
tion.
●All trailer lights work.
●All lights work each time you connect them.
●The trailer ball is set up at the proper height for the coupler on the trailer.
●The vehicle remains level when a loaded or unloaded trailer is hitched. Do not
drive if the vehicle is not level, and check for improper tongue load, overloading,
worn suspension, or other possible causes.
●The trailer cargo is securely loaded.
●The rear view mirrors conform to all applicable federal, state/provincial or local
regulations. If they do not, install rear view mirrors appropriate for towing pur-
poses.

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2-5. Driving information
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When driving
GX460_U.S.A. (OM60E69U)
■Break-in schedule
Lexus recommends that you do not use a new vehicle or a vehicle with any new
power train components (engine, transmission, differential, wheel bearings, etc.) to
tow a trailer for the first 500 miles (800 km) of driving.
■Maintenance
●If you tow a trailer, your vehicle will require more frequent maintenance due to
the additional load. (See “Warranty and Services Guide”, “Owner’s Manual
Supplement” or “Scheduled Maintenance”.)
●Retighten the fixing bolts of the towing ball and bracket after approximately
600 miles (1000 km) of trailer towing.
CAUTION
■Trailer towing precautions
●Follow all the instructions described in this section. Failure to do so could cause
an accident resulting in death or serious injury.
●Exceeding the towing capacity, GVWR, GCWR and GAWR can cause an acci-
dent resulting in death or serious personal injuries.

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2-5. Driving information
GX460_U.S.A. (OM60E69U)
CAUTION
■To avoid accident or injury
●The total trailer weight (trailer weight plus the weight of cargo) must not exceed
6500 lb. (2948 kg).
●If a trailer and cargo weigh over 2000 lbs. (900 kg), use a sway control device of
sufficient capacity.
●If the gross trailer weight is over 5000 lbs. (2268 kg), it is necessary to use a
weight distributing hitch with sufficient capacity.
●If using a weight distributing hitch when towing, keep your vehicle level with the
ground.
●The gross combined weight (sum of your vehicle weight plus its load and the total
trailer weight) must not exceed 13100 lb. (5492 kg).
●Do not exceed the trailer hitch assembly weight, gross vehicle weight, gross axle
weight and trailer tongue load capacities.
●Never load more weight in the back than in the front of the trailer. About 60 % of
the load should be in the front half of the trailer, and the remaining 40 % in the
rear.
●The tow hitch receiver installed on your vehicle must never be used on another
vehicle.
●Do not exceed 45 mph (72 km/h) or the po sted towing speed limit, whichever is
lower. A instability (swaying) of the towi ng vehicle-trailer combination increases
as speed increases, exceeding 45 mph (72 km/h) may cause loss of control.

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2-5. Driving information
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When driving
GX460_U.S.A. (OM60E69U)
CAUTION
■To avoid accident or injury
●Do not use cruise control when you are towing.
●Slow down and downshift before descending steep or long downhill grades. Do
not make sudden downshifts.
●Avoid holding the brake pedal down too long or applying the brakes too fre-
quently.
This could cause the brakes to overheat and result in reduced braking efficiency.
■Hitches
●If you wish to install a trailer hitch, contact your Lexus dealer.
●Use only a hitch that conforms to the total trailer weight requirement.
●Follow the directions supplied by the hitch manufacturer.
●Lubricate the hitch ball with a light coat of grease.
●Remove the trailer hitch whenever you are not towing a trailer. After removing
the hitch, seal any mounting hole in the vehicle body to prevent entry of any sub-
stances into the vehicle.
■When towing a trailer
●If the total trailer weight exceeds 1000 lb . (453 kg), trailer brakes are required.
●Never tap into your vehicle’s hydraulic system, as this will lower the vehicle’s brak-
ing 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
a risk of the trailer wandering into another lane.

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2-5. Driving information
GX460_U.S.A. (OM60E69U)
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 use axle-mounted hitches, as they can cause damage to the axle housing,
wheel bearings, wheels or tires.
■Brakes
Lexus recommends trailers with brakes that conform to all applicable federal and
state/provincial regulations.
■Safety chain
A safety chain must always be used between the towing vehicle and the trailer.
Leave sufficient slack in the chain for turns. The chain should cross under the trailer
tongue to prevent the tongue from droppi ng to the ground in the case that it
becomes damaged or separated. For the correct safety chain installation proce-
dure, ask your Lexus dealer.
■Do not directly splice trailer lights
Directly splicing trailer lights may dama ge your vehicle’s electrical system and
cause a malfunction.

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2-5. Driving information
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When driving
GX460_U.S.A. (OM60E69U)
Trailer towing tipsYour vehicle will handle differently when towing a trailer. The 3 main
causes of vehicle-trailer accidents are driver error, excessive speed and
improper trailer loading. Keep the following in mind when towing:
● Before starting out, check the trai ler lights and the vehicle-trailer con-
nections. Recheck after driving a short distance.
● Practice turning, stopping and reversing with the trailer attached in an
area away from traffic until you be come accustomed to the feel of the
vehicle.
● Reversing with a trailer attached is difficult and requires practice Grip
the bottom of the steering wheel and move your hand to the left to
move the trailer to the left. Move yo ur hand to the right to move the
trailer to right. (This is generally opposite to reversing without a trailer
attached.) Avoid sharp or prolon ged turning. Have someone guide
you when reversing to reduce the risk of an accident.
● As stopping distance is increased when towing a trailer, vehicle-to-
vehicle distance should be increas ed. For each 10 mph (16 km/h) of
speed, allow at least one vehicle and trailer length.
● Avoid sudden braking as you may skid, resulting in jackknifing and loss
of control. This is especially true on wet or slippery surfaces.

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2-5. Driving information
GX460_U.S.A. (OM60E69U)●
Avoid jerky starts or sudden acceleration.
● Avoid jerky steering and sharp turns, and slow down before making
turns.
● Note that when making a turn, the tr ailer wheels will be closer than the
vehicle wheels to the inside of the turn. Compensate by making a
larger than normal turning radius.
● Crosswinds and rough roads will adve rsely affect handling of your
vehicle and trailer, causing sway. Periodically check the rear to prepare
for being passed by large trucks or buses, which may cause your vehi-
cle and trailer to sway. If swaying occurs, firmly grip the steering wheel,
reduce speed immediately but gradua lly, and steer straight ahead.
Never increase speed. If you make no extreme correction with the
steering or brakes, your vehi cle and trailer will stabilize.
● Take care when passing other vehicl es. Passing requires considerable
distance. After passing a vehicle, do not forget the length of your
trailer, and be sure you have plenty of room before changing lanes.
● In order to maintain efficient eng ine braking and electrical charging
performance, do not use overdrive. Transmission shift range position
must be in 5, in S mode.
● Due to the added load of the trailer, your vehicle’s engine may overheat
on hot days (at temperatures over 85 °F [30 °C]) when driving up a
long or steep grade. If the engine coolant temperature gauge indicates
overheating, immediately turn off the air conditioning (if in use), pull
your vehicle off the road and stop in a safe spot. (
P. 74 4 )

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2-5. Driving information
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When driving
GX460_U.S.A. (OM60E69U)●
Always place wheel blocks under both the vehicle and the trailer
wheels when parking. Apply the pa rking brake firmly, and put the
transmission in P. Avoid parking on a slope, but if unavoidable, do so
only after performing the following:
Apply the brakes and keep them applied.
Have someone place wheel blocks under both the vehicle and
trailer wheels.
When the wheel blocks are in pl ace, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.
Shift into P and turn off the engine.
● When restarting after parking on a slope:
With the transmission in the P posit ion, start the engine. Be sure
to keep the brake pedal pressed.
Shift into 3, 2, L, or R position (if reversing).
Release the parking brake and br ake pedal, and slowly pull or
back away from the wheel blocks. Stop and apply the brakes.
Have someone retrieve the blocks.
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