2004 Lexus GX470 battery

INTRODUCTION
530
PARTS AND TOOLS
Here is a list of parts and tools you will need to perform
do-it-yourself maintenance. Remember all Lexus parts are
designed in metric sizes, so your tools must be metric.
Checking the engine oil level
Parts (if level is low):

Toyota Genuine Motor Oilº or equivalent
See page 546 for details about engine oil selection.
Tools:

Rag or paper towel

Funnel (only for adding oil)
Checking the engine coolant level
Parts (if level is low):

Toyota Super Long Life Coolantº or similar high quality
ethylene glycol based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life hybrid organic acid
technology (Coolant with long-life hybrid organic acid
technology is a combination of low phosphates and organic
acids.)
Toyota Super Long Life Coolantº is a mixture of 50% coolant
and 50% deionized water. This coolant provides protection
down to about -35C (-31F).
Tools:

Funnel (only for adding coolant)
Checking brake fluid
Parts (if level is low):

FMVSS No. 116 DOT 3 or SAE J1703 brake fluid
Tools:

Rag or paper towel

Funnel (only for adding fluid)
Checking power steering fluid
Parts (if level is low):

Automatic transmission fluid DEXRON
II or III
Tools:

Rag or paper towel

Funnel (only for adding fluid)
Checking battery condition
Tools:

Warm water

Baking soda

Grease

Conventional wrench (for terminal clamp bolts)

ENGINE
536Ð IGNITION SYSTEM
Spark plug Ð Make DENSO
NGK
Ð Gap
SK20R11
IFR6A11
1.1 mm (0.043 in.)
Ð ELECTRICAL SYSTEM
Battery Open voltage at 20 C (68F):
Charging rates
12.6 Ð 12.8 V Fully charged
12.2 Ð 12.4 V Half charged
11.8 Ð 12.0 V Discharged
[Voltage that is checked 20 minutes after the key is removed
with all the lights turned off]
5 A max.

CHASSIS
570
Tire related termMeaning
Occupant distributiondistribution of occupants in a vehicle as specified in the third column \
of Table 1
that follows
Production options
weightthe combined weight of those installed regular production options weighi\
ng over
2.3 kg (5 lb.) in excess of those standard items which they replace, n\
ot
previously considered in curb weight or accessory weight, including heav\
y duty
brakes, ride levelers, roof rack, heavy duty battery, and special trim
Recommended
inflation pressurecold tire inflation pressure recommended by a manufacturer
Rima metal support for a tire or a tire and tube assembly upon which the ti\
re beads
are seated
Rim diameter (Wheel
diameter)nominal diameter of the bead seat
Rim size designationrim diameter and width
Rim type designationthe industry of manufacturer's designation for a rim by style or code
Rim widthnominal distance between rim flanges
Vehicle capacity
weight
(Total load capacity)the rated cargo and luggage load plus 68 kg (150 lb.) times the vehicl\
e's
designated seating capacity
Vehicle maximum
load on the tirethe load on an individual tire that is determined by distributing to eac\
h axle its
share of the maximum loaded vehicle weight and dividing by two

SECTION 6 ± 4
583
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications584
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition 592
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions 597
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses 598
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
Checking the cartridge type fuses 600
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . .
Adding washer fluid 602
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs 603
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
586
No.FUSEAMPERECIRCUIT
1SPARE10Spare fuse
2ALT140
Charging system and all
components in AM1º,
HEATERº, CDS FANº, FR
FOGº, DEFOGº, AIR SUSº,
AC115V INVº, SEAT HEATERº,
BATT CHGº, TOWING BRKº
and TOWINGº fuses
3SPARE15Spare fuse
4HEATER50Air conditioning system
5AIR
SUS50Rear height control air
suspension
6AM150
All components in ACCº, CIGº,
IG1º, FR WIP-WSHº, RR
WIPº, RR WSHº, DIFFº,
TEMSº and STAº fuses
7TOWING BRK30Trailer brake controller
8J/B50
All components in P FR P/Wº,
P RR P/Wº, D RR P/Wº, D
P/SEATº, P P/SEATº, TAILº,
PANELº and POWER OR
TI&TEº fuses
9BATTCHG30Trailer sub battery
10TOWING40Trailer lights
11CDS FAN20Electric cooling fan
12RR A/C30Rear air conditioning system
No.FUSEAMPERECIRCUIT

ELECTRICAL COMPONENTS
592
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 l east 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
594
Checking battery exterior
1Terminals2Hold-down clamp
Check the battery for corroded or loose connections,
cracks, or loose hold-down 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 Ð but
do not overtighten.
3. Tighten the hold-down clamp only enough to keep the
battery firmly in place. Overtightening may damage the battery
case.

ELECTRICAL COMPONENTS
595
NOTICE
Make sure the engine and all accessories are turnedoff 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 is disconnected or run down
The power windows and moon roof may not operate
automatically and the jam protection function will not function
correctly after you reconnect, replace or recharge the battery.
In any of these cases, you should normalize the power
windows and moon roof. To normalize the power windows and
moon roof, see pages 50 and 107.
Checking battery condition
Check the battery condition by the indicator color.
1BLUE Ð Good condition.
2WHITE Ð Charging necessary. Have the battery
checked by your Lexus dealer.
3RED Ð Have the battery checked by your Lexus dealer.