2006 LEXUS LX470 low

CHASSIS
439
Tire selection
When replacing a tire, use a tire of the same size and
construction, and the same or greater maximum
load as the originally installed tires. Also, all the
tires must be the same brand and have the same
tread patterns.
Using any other size or type of tire may seriously affect
handling, ride, speedometer/odometer calibration,
ground clearance, and clearance between the body and
tires or snow chains.
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. For details about the Certification
Label and sidewall of the tire, see pages 394 and 428.CAUTION
Observe the following instructions. Otherwise, an
accident may occur resulting in death or serious
injuries.
 Do not mix radial, bias belted, or biasply tires
on your vehicle, as this may cause dangerous
handling characteristics resulting in loss of
control.
 Do not use tires other than the manufacturer’s
recommended size, as this may cause
dangerous handling characteristics resulting in
loss of control.
 Do not use tires of different brands, sizes,
construction or tread patterns, as this may
cause dangerous handling characteristics
resulting in loss of control.
It can cause dangerous handling characteristics,
resulting in loss of control. If you need to change from
conventional tires to radial tires or vice versa, replace
them as a set.

CHASSIS
440
INSTALLING SNOW TIRES ANDCHAINS
When to use snow tires or chains
Snow tires or chains are recommended when driving on
snow or ice.
On wet or dry roads, conventional or radial tires provide better
traction than snow or studded tires.
Snow tire selection
If you need snow tires, select tires of the same size,
construction and load capacity as the originally installed
tires. Also, all the tires must be the same brand and have
the same tread patterns.
Do not use tires other than stated above. 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 local regulations for possible restrictions.
CAUTION
Observe the following instructions. Otherwise, an
accident may occur resulting in death or serious
injuries.
Do not use snow tires other than the manufacturer’s
recommended size, as this may cause dangerous
handling characteristics resulting in loss of control.
Do not use snow tires of different brands, sizes,
construction or tread patterns, as this may cause
dangerous handling characteristics resulting in loss
of control.
Snow tire installation
Snow tires should be installed on all wheels.
Installing snow tires on the rear wheels only can lead to an
excessive difference in road grip capability between the front
and rear tires which could cause loss of vehicle control.
CAUTION
 Do not drive with the snow tires incorrectly inflated.
 Never drive over 105 km/h (65 mph) with any type of
snow tires.

CHASSIS
441
Tire chain selection
63L009a
 1Side chain 2Cross chain
Use the tire chains of correct size.
For 275/60R18 tires, use the following type chains. mm (in.)
A: Diameter of side chain 3.5 (0.14)
B: Diameter of cross chain 4.0 (0.16)
Regulations regarding the use of tire chains vary
according to location or type of road. Always check local
regulations before installing chains.
NOTICE
If the wrong combination of tire and chain is used, the
chains could damage the vehicle body.
Chain installation
Install the chains on the rear tires as tightly as possible.
Do not use tire chains on the front tires. Retighten chains
after driving 0.5 1.0 km (1/4 1/2 mile).
When installing chains on your tires, carefully follow the
instructions of the chain manufacturer.
CAUTION
 Do not exceed 50 km/h (30 mph) or the chain
manufacturer’s recommended speed limit,
whichever is lower.
 Drive carefully avoiding bumps, holes, and sharp
turns, which may cause the vehicle to bounce.
 Avoid sharp turns or lockedwheel braking, as use of
chains may adversely affect vehicle handling.
 When driving with chains installed, be sure to drive
carefully. Slow down before entering curves to avoid
losing control of the vehicle. Otherwise an accident
may occur.

CHASSIS
442
REPLACING WHEELS
When to replace your wheels
If you have wheel damage such as bending, cracks or
heavy corrosion, the wheel should be replaced.
If you fail to replace a damaged wheel, the tire may slip off the
wheel or cause loss of handling control.
Replacement with used wheels is not recommended as they
may have been subjected to rough treatment or high mileage
and could fail without warning. Also, bent wheels which have
been straightened may have hidden structural damage and
therefore should not be used. Never use an inner tube in a
leaking wheel which is designed for a tubeless tire.
Wheel selection
When replacing wheels, care should be taken to ensure
that they are equivalent to those removed in load capacity,
diameter, rim width, and offset.
Correct replacement wheels are available at your Lexus
dealer.
A wheel of a different size or type may adversely affect
handling, wheel and bearing life, brake cooling,
speedometer/odometer calibration, stopping ability, headlight
aim, bumper height, vehicle ground clearance, and tire or snow
chain clearance to the body and chassis.
CAUTION
Observe the following instructions. Otherwise, an
accident may occur resulting in death or serious
injuries.
 Do not use wheels other than the manufacturer’s
recommended size, as this may cause dangerous
handling characteristics resulting in loss of control.
 Do not use wheels of different brands, sizes and
types, as this may cause dangerous handling
characteristics resulting in loss of control.

ELECTRICAL COMPONENTS
448
No.FuseAMPERECIRCUIT
17 TAIL15Parking lights, Tail lights
18 BAT30All components in “ECU−B2”
19 TEL7.5Lexus Link System
20 AMP30Audio system
21 EFI or
ECD No.125Multiport fuel injection
system/Sequential multiport fuel
injection system
22 AM215All components in “IGN”
23 ETCS10Multiport fuel injection
system/Sequential multiport fuel
injection system
24 HORN10Horns
25 HEAD
(RHLWR)10Right− hand headlight (low
beam)
26 HEAD
(LHLWR)10Left− hand headlight (low beam)
27 HEAD
(RHUPR)20Right− hand headlight (high
beam)
28 HEAD
(LHUPR)20Left− hand headlight (high beam)
29 AIR PUMP50Multiport fuel injection
system/Sequential multiport fuel
injection system
30 A/F HTR15Multiport fuel injection
system/Sequential multiport fuel
injection system
No.FuseAMPERECIRCUIT
31 PWR
OUTLET15Power outlets
32 CIG15Cigarette lighter
33 ACC7.5Instrument panel light
34 AM17.5Multiport fuel injection
system/Sequential multiport fuel
injection system
35 DEFOG20Rear window defogger
36 AHCB15Active height control suspension
(AHC)
37 FUEL HTR20Fuel heater
38 POWER HTR7.5Power heater
39 AHCIG20Active height control suspension
(AHC)
40 EFI or
ECD No.210Emission control system
41 GAUGE 110Gauges and meters
42 ECUIG 110Multiport fuel injection
system/Sequential multiport fuel
injection system
43 ECUB110Navigation system
44 DBL
LOCK15Double lock system

ELECTRICAL COMPONENTS
450
No.FuseAMPERECIRCUIT
63 SEATHTR15Seat heater
64 GAUGE 210Back− up lights
65 MET7.5Gauges and meters
66 IGN7.5Multiport fuel injection
system/Sequential multiport fuel
injection system
67 SECURITY7.5Theft deterrent system
68 P/W (RR)20Power window
69 P/W (FR)20Power window
70 BATT
CHARGE30Trailer charging system
71 TIL & TEL20Tilt and telescopic steering
72 RR A/C30Rear air conditioning system
73 RH SEAT30Power seat system
CHECKING BATTERY CONDITION
Precautions
CAUTION
BATTERY PRECAUTIONS
The battery produces flammable and explosive
hydrogen gas.
 Do not cause a spark by contacting the battery
terminals with tools.
 Do not smoke or light a match near the battery.
The electrolyte contains poisonous and corrosive
sulfuric acid.
 Avoid contact with eyes, skin or clothes.
 Never inhale or swallow electrolyte.
 Wear protective safety glasses when working near
the battery.
 Keep children away from the battery.
EMERGENCY MEASURES
 If electrolyte gets in your eyes, flush your eyes with
clean water for at least 15 minutes and get immediate
medical attention. If possible, continue to apply
water with a sponge or cloth while traveling to the
medical office.

ELECTRICAL COMPONENTS
451
If electrolyte gets on your skin, thoroughly wash the
contacted area. If you feel a pain or burn, get medical
attention immediately.
 If electrolyte gets on your clothes, there is a
possibility of its soaking through to your skin, so
immediately take off the exposed clothing and follow
the procedure above, if necessary.
 If you accidentally to swallow electrolyte, drink a
large quantity of water or milk. Follow with milk of
magnesia, beaten ra w egg or vegetable oil. Then go
immediately for emergency help.Checking battery exterior
64X004d
 1 Terminals 2Holddown clamp
Check the battery for corroded or loose connections,
cracks, or loose holddown clamps.
1. If the battery is corroded, wash it off with a solution of warm
water and baking soda. Coat the terminals with grease to
prevent further corrosion.
2. If the connections are loose, tighten the clamp bolts − but do
not overtighten.
3. Tighten the hold −down clamp only e nough to keep the
battery firmly in place. Overtightening may damage the battery
case.

ELECTRICAL COMPONENTS
452
NOTICE
Make sure the engine and all accessories are turned
off before performing maintenance.
 When checking the battery, remove the ground cable
first and reinstall it last.
 Be careful not to cause a short circuit with tools.
 Take care no solution gets into the battery when
washing it.
If the battery terminal is disconnected or the battery is run
down...
 The variable gear ratio steering system is reset temporarily
and “VGRS” warning light flashes after you reconnect the
battery terminal. In this case, you should turn off the light
and return the system to normal. To return the system to
normal, see “Variable gear ratio steering system” on page
293.
 The moon roof may not operate automatically and the jam
protection function will not operate correctly after you
reconnect, replace or recharge the battery with the moon
roof slide −opened or tilted up. In any of these cases, you
should return the moon roof to normal. To return the moon
roof to normal, see “Moon roof” on page 95.
Checking battery condition
(a) Checking by fluid level lines
64X005c
 1 Upper line 2Lower line
The fluid (electrolyte) level must be between the upper and
lower lines.
When checking the fluid level, look at all six cells, not just one
or two.
If the level is lower than the lower line, have the battery
checked by your Lexus dealer.