2012 Lexus GX460 air suspension

318
2-4. Using other driving systems
GX460_U.S.A. (OM60J00U)
■When HI mode is selected
The vehicle height will change to N mode when driving at the speeds of 18 mph (30
km/h).
Even if vehicle speed is then reduced to under 18 mph (30 km/h), height will not
return to HI mode.
■When LO mode is selected
The vehicle height will change to N mode when vehicle speed exceeds 7 mph
(12 km/h).
Even if vehicle speed is then reduced to under 7 mph (12 km/h), height will not
return to LO mode.
■Automatic leveling function
Regardless of the number of occupants and the luggage load, vehicle height in any
mode is always adjusted to a fixed height by the automatic leveling function.
■The rear height control air suspension will not operate in the following cases:
●The underbody of the vehicle is touching the surface of the road.
●The area around the suspension is covered with ice.
■Even if you hear an operating noise
This does not indicate a problem in the rear height control air suspension.
■Parking and stopping tips
●If you immediately stop the engine after off-road driving, or park the vehicle for
a long time, the vehicle height may gradually lower. When parking, make sure
there is nothing under the vehicle that may come in contact with the underbody.
The vehicle will return to the set height when the engine is started.
●The vehicle height may change as the temperature changes when the engine is
stopped. The vehicle will return to the set height when the engine is started.

319
2-4. Using other driving systems
2
When driving
GX460_U.S.A. (OM60J00U)
■When lowering the vehicle
In order to prevent the vehicle height from rising as occupants leave the vehicle,
lowering control will occur for a short while after the engine has been stopped.
■The rear height control air suspension failure warning
●If a malfunction occurs in the rear height control air suspension, N mode is auto-
matically selected. However, the system may not switch to N mode depending
on the location of the malfunction.
●The warning message is displayed on the multi-information display, and the rear
height control air suspension cannot be activated until the malfunction is cor-
rected.
Stop the engine and start it again. If the warning message turns off, the system is
operating correctly. If the warning message continues to be displayed, have
your vehicle inspected by your Lexus dealer as soon as possible.
CAUTION
■The rear height control air suspension must be turned off
Be sure to observe the following precautions. Otherwise, the automatic leveling
function may cause vehicle height to change, and you may catch part of your body
in the vehicle, resulting in an accident:
●When jacking up the vehicle, installing tire chains or tying the vehicle with chains/
wires for transportation via flat bed truck, turn off the rear height control air sus-
pension and stop the engine.
●When the vehicle must be towed or disconnecting a trailer, put the vehicle height
in N mode and turn off the rear height control air suspension.
●When the vehicle is stuck, turn off the rear height control air suspension.

360
2-5. Driving information
GX460_U.S.A. (OM60J00U)
Example based on your vehicleCargo capacity
Total load capacity
When 2 people with the combined weight of 366 lb. (166 kg) are riding
in your vehicle, the available amount of cargo and luggage load capacity
will be as follows:
Vehicles without rear heig ht control air suspension
With third seats — total load capacity: 1315 lb. (595 kg)
1315 lb. - 366 lb. = 949 lb. (595 kg - 166 kg = 429 kg)
Without third seats
— total load capacity: 1525 lb. (690 kg)
1525 lb. - 366 lb. = 1159 lb. (690 kg - 166 kg = 524 kg)
Vehicles with rear height control air suspension
Total load capacity: 1280 lb. (580 kg)
1280 lb. - 366 lb. = 914 lb. (580 kg - 166 kg = 414 kg)
In this condition, if 3 more passengers with the combined weight of 388 lb.
(176 kg) get on, the available cargo and luggage load will be reduced as follows:

361
2-5. Driving information
2
When driving
GX460_U.S.A. (OM60J00U)Vehicles without rear height control air suspension
With third seats
949 lb. - 388 lb. = 561 lb. (429 kg - 176 kg = 253 kg)
Without third seats
1159 lb. - 388 lb. = 771 lb. (524 kg - 176 kg = 348 kg)
Vehicles with rear heig
ht control air suspension
914 lb. - 388 lb. = 526 lb. (414 kg - 176 kg = 238 kg)
As shown in the example above, if the number of occupants increases,
the cargo and luggage load will be reduced by an amount that equals the
increased weight due to the additional occupants. In other words, if an
increase in the number of occupants causes an excess of the total load
capacity (combined weight of occupants plus cargo and luggage load),
you must reduce the cargo and luggage on your vehicle.
CAUTION
■Things that must not be carried in the luggage compartment
The following things may cause a fire if loaded in the luggage compartment:
●Receptacles containing gasoline
●Aerosol cans

364
2-5. Driving information
GX460_U.S.A. (OM60J00U)
Vehicle load limits
Vehicle load limits include total load capacity, seating capacity, towing
capacity and cargo capacity.
■Total load capacity:
Vehicles without rear height control air suspension
With third seats — 1315 lb. (595 kg)
Without third seats — 1525 lb. (690 kg)
Vehicles with rear height control air suspension 1280 lb. (580 kg)
Total load capacity means the combined weight of occupants, cargo
and luggage.
■ Seating capacity:
With third seats — 7 occupants (Front 2, Rear 5)
Without third seats — 5 occupants (Front 2, Rear 3)
Seating capacity means the maximu m number of occupants whose
estimated average weight is 150 lb. (68 kg) per person.
■ Towing capacity: 6500 lb. (2948 kg)
Towing capacity means the maximum gross trailer weight (trailer
weight plus its cargo weight) that your vehicle is able to tow.
■ Cargo capacity
Cargo capacity may increase or decrease depending on the weight
and the number of occupants.

380
2-5. Driving information
GX460_U.S.A. (OM60J00U)
Connecting and disconnecting a trailer
Stop your vehicle and a trailer in line and perform the following:
● Connecting a trailer
Set 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 .
● Disconnecting a trailer
Set 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.
STEP1STEP1
STEP2STEP2
STEP1STEP3STEP3
STEP1STEP4STEP4STEP2STEP2
STEP1STEP1
STEP2STEP2
STEP1STEP3STEP3
STEP1STEP4STEP4
STEP1STEP5STEP5STEP5
STEP1STEP5STEP6STEP6STEP6
STEP1STEP5STEP6STEP7STEP7

589
4-1. Maintenance and care
4
Maintenance and care
GX460_U.S.A. (OM60J00U)
■Automatic car washes
●Fold the mirrors back before washing the vehicle. Start washing from the front
of the vehicle. Make sure to extend the mirrors before driving.
●Brushes used in automatic car washes may scratch the vehicle surface and
harm your vehicle’s paint.
■High pressure car washes
●Do not allow the nozzles of the car wash to come within close proximity of the
windows and the air suspension unit.
●Before using the car wash, check that the fuel filler door on your vehicle is
closed properly.
■Touch-up paint (if equipped)
Touch-up paint may be used to cover small chips or scratches.
Apply the paint soon after the damage occurs or corrosion may set in. To apply the
touch-up paint so it is hardly noticeable, the trick is to apply it only to the bare spots.
Apply only the smallest amount possible and do not paint the surface around the
scratch or chip.
■Aluminum wheels
●Remove any dirt immediately by using a neutral detergent. Do not use hard
brushes or abrasive cleaners. Do not use strong or harsh chemical cleaners.
Use the same mild detergent and wax as used on the paint.
●Do not use detergent on the wheels when they are hot, for example after driving
for long distance in the hot weather.
●Wash detergent from the wheels immediately after use.
■Bumpers and side moldings
Do not scrub with abrasive cleaners.

650
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60J00U)
Fuse layout and amperage ratingsEngine compartment
FuseAmpereCircuit
1A/C RR40 ARear air conditioning system
2AIR SUS50 AAir suspension system, AIR SUS
NO.2
3INV15 AInverter
4DEF30 ARear window defogger
5DEICER20 AWindshield wiper deicer