2020 Lexus GX460 fuse

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GX460_OM_OM60R27U_(U)
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6-1. Maintenance and care Cleaning and protecting the vehicle exterior ................ 434
Cleaning and protecting the vehicle interior.................. 437
6-2. Maintenance Maintenance requirements ............................ 440
General mainte nance.............. 443
Emission inspection and maintenance (I/M)
programs.................................... 446
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 447
Hood ............................................... 450
Engine compartment .................451
Tires ................................................. 464
Tire inflation pressure .............. 476
Wheels ...........................................480
Air conditioning filter ............... 482
Electronic key battery.............. 484
Checking and replacing fuses.............................................. 486
Headlight aim .............................. 489
Light bulbs ......................................491 7-1. Essential information
Emergency flashers ..................500
If your vehicle has to be stopped in
an emergency ........................... 501
If the vehicle is trapped in rising water ................................ 502
7-2. Steps to take in an emergency If your vehicle needs to be towed ............................... 503
If you think something is wrong........................................... 509
Fuel pump shut off system....... 510
If a warning light turns on or a warning buzzer
sounds ............................................ 511
If a warning message is displayed .................................... 520
If you have a flat tire .................. 524
If the engine will not start ........538
If the electronic key does not operate properly ............. 540
If the vehicle battery is discharged................................. 543
If your vehicle overheats......... 546
If the vehicle becomes stuck ............................................. 549
6Maintenance and care7When trouble arises

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GX460_OM_OM60R27U_(U)5-4. Using the other interior features
NOTICE
■To prevent the fuse from being blown
12 V DC: Do not use an accessory
that uses more than 12 V 10 A.
120 V AC: Do not use a 120 V AC applia nce that requires more than 100 W.
If a 120 V AC appliance that consumes more than 100 W is used, the protection circuit
will cut the power supply.
■Appliances that may not operate properly (120 V AC)
The following 120 V AC appliances may not operate even if their power consumption
is under 100 W.
●Appliances with high initial peak wattage
●Measuring devices that process precise data.
●Other appliances that require an extremely stable power supply
■To prevent battery discharge
12 V DC: Do not use the power outlet longer than necessary when the engine is not
running.
120 V AC: Turn off all the vehicle’s electron ic equipment and accessories, such as the
headlights and air conditioning , when electrical appliances that consume in excess of
100 W are used continuously for long periods of time.
■To prevent any damage caus ed by heat (120 V AC)
●Do not use any electrical appliances that give off intense heat, such as toasters, in any
locations including the internal or external trim, seats and deck.
●Do not use any electrical appliances that are easily affected by vibration or heat inside
the vehicle. Vibration while driving, or the heat of the sun while parking, may result in
damage to those electrical appliances.
■If any electrical appliances are to be used while driving (120 V AC)
Securely fasten both the appliances and th eir cables to prevent them from falling or
getting caught in any of the power train components.
■If the power outlet is loose when an electrical appliance plug is connected (120 V
AC)
Replace the outlet. Contact your Lexus dealer for any necessary replacements.
■If the power outlet gets dirty (120 V AC)
Turn the main switch off and use a soft, clea n cloth to wipe it gently. Do not use any
cleansing materials, such as organic solven ts, wax, or compound cleaners, as these
may damage the power outlet or cause it to malfunction.

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GX460_OM_OM60R27U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 434
Cleaning and protecting the vehicle interior.................. 437
6-2. Maintenance Maintenance requirements ............................ 440
General maintenance.............. 443
Emission inspection and maintenance (I/M)
programs .................................... 446
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 447
Hood ...............................................450
Engine compartment ................ 451
Tires ................................................. 464
Tire inflation pressure............... 476
Wheels .......................................... 480
Air conditioning filter ............... 482
Electronic key battery ..............484
Checking and replacing fuses ..............................................486
Headlight aim ..............................489
Light bulbs...................................... 491

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GX460_OM_OM60R27U_(U)6-3. Do-it-yourself maintenance
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Maintenance and care
Do-it-yourself service precautions
If you perform maintenance yourself, be sure to follow the correct procedures
as given in these sections.
ItemsParts and tools
Battery condition
(
 P. 460)•Warm water• Baking soda•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 457)
• FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant level
( P. 455)
• “Toyota Super Long Life Coolant” or similar high quality eth-
ylene glycol based non-silicate, non-amine, non-nitrite and
non-borate coolant with long-l ife hybrid organic acid tech-
nology.
For the U.S.A.:
“Toyota Super Long Life Coolan t” is pre-mixed with 50 %
coolant and 50 % deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with 55 %
coolant and 45 % deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(  P. 453)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P. 486)• Fuse with same amperage rating as original

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GX460_OM_OM60R27U_(U)6-3. Do-it-yourself maintenance
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Maintenance and care
Engine compartment
Power steering fluid reservoir
(P. 459)
Engine oil level dipstick (P. 453)
Engine oil filler cap ( P. 454)
Brake fluid reservoir ( P. 457)
Fuse box ( P. 486)Battery
(P. 460)
Radiator ( P. 457)
Condenser ( P. 457)
Cooling fans
Engine coolant reservoir (P. 455)
Washer fluid tank ( P. 463)1
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GX460_OM_OM60R27U_(U)6-3. Do-it-yourself maintenance
Checking and replacing fuses
Turn the engine switch off.
Open the fuse box cover.
Remove the fuse with the pull-out tool.
Only type A fuse can be removed using
the pull-out tool.
If any of the electrical components do not operate, a fuse may have blown. If
this happens, check and repl ace the fuses as necessary.
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Engine compartmentDriver’s side instrument panel
Push the tab in and lift the lid off. Remove the lid.
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4876-3. Do-it-yourself maintenance
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Maintenance and care
Check if the fuse is blown.Normal fuse
Blown fuse
Type A:
Replace the blown fuse with a new fuse of an appropriate amperage rating. The
amperage rating can be found on the fuse box lid.
Type B, C and D:
Contact your Lexus dealer.
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Type AType B
Type CType D

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GX460_OM_OM60R27U_(U)6-3. Do-it-yourself maintenance
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement. (
P. 491)
●If the replaced fuse blows again, have th e vehicle inspected by your Lexus dealer.
■If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to th e vehicle, and possibly a fire or injury.
●Never use a fuse of a higher amperage rati ng than indicated, or use any other object
in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wi re, even as a temporary fix.
●Do not modify the fuses or the fuse boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload dete rmined and repaired by your Lexus dealer,
as soon as possible.