Lexus GX460 2015 Alphabetical index /

451
GX460_OM_OM60L72U_(U)6-3. Do-it-yourself maintenance
6
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.
ItemsPa r t s a n d t o o l s
Battery condition
(
 P. 464)•Warm water• Baking soda•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 4 6 1 )
• 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. 4 5 9 )
• “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-life hybrid organic acid tech-
nology.
For the U.S.A.:
“Toyota Super Long Life Coolant” 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. 4 5 7 )
• “Toyota Genuine Motor Oil” or equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P. 4 8 5 )• Fuse with same amperage rating as original

452
GX460_OM_OM60L72U_(U)6-3. Do-it-yourself maintenance
Headlight aim
(
 P. 4 8 8 )• Phillips-head screwdriver
Light bulbs
( P. 4 9 0 )
• Bulb with same number and wattage rating as original
• Phillips-head screwdriver•Flathead screwdriver
•Wrench
Power steering fluid
level ( P. 4 6 3 )• Automatic transmission fluid DEXRON® II or III
•Rag or paper towel•Clean funnel
Radiator and con-
denser ( P. 4 6 1 )
Tire inflation pres-
sure (P. 4 7 5 )•Tire pressure gauge• Compressed air source
Wa s h e r f l u i d
( P. 4 6 7 )• Water or washer fluid containi ng antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)
ItemsPa r t s a n d t o o l s

GX460_OM_OM60L72U_(U)
4536-3. Do-it-yourself maintenance
6
Maintenance and care
CAUTION
The engine compartment contains many mechanisms and fluids that may move suddenly,
become hot, or become electrically energized. To avoid death or serious injury, observe
the following precautions:
■When working on the engine compartment
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driving
as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper or rags, in the engine com-
partment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel and
battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and corro-
sive sulfuric acid.
■When working near the electric cooling fans or radiator grille
Be sure the engine switch is off. With the engine switch in IGNITION ON mode, the
electric cooling fans may automatically start to run if the air conditioning is on and/or
the coolant temperature is high. ( P. 461)
■When working on or under the vehicle
Do not get under the vehicle with just the jack supporting it.
Always use automotive jack stands or other solid supports.
■Safety glasses
Wear safety glasses to prevent flying or fallin g material, fluid spray, etc. from getting in
your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt
in the air.

454
GX460_OM_OM60L72U_(U)6-3. Do-it-yourself maintenance
Hood
Pull the hood lock release lever.
The hood will pop up slightly.
Move the auxiliary catch lever to
side direction and lift the hood.
Release the lock from the inside of the vehicle to open the hood.
1
2
CAUTION
■Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion and cause
an accident, which may result in death or serious injury.

455
GX460_OM_OM60L72U_(U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment
Power steering fluid reservoir
(P. 4 6 3 )
Engine oil level dipstick (P. 4 5 7 )
Engine oil filler cap ( P. 4 5 8 )
Brake fluid reservoir ( P. 4 6 1 )
Fuse box ( P. 4 8 5 ) Battery
( P. 464)
Radiator ( P. 4 6 1 )
Condenser ( P. 4 6 1 )
Cooling fans
Engine coolant reservoir (P. 4 5 9 )
Wa s h e r f l u i d t a n k ( P. 4 6 7 )1
2
3
4
5
6
7
8
9
10
11

456
GX460_OM_OM60L72U_(U)6-3. Do-it-yourself maintenance
■Removing the engine compartment cover
■Installing the clips
Push up center portion
Insert
Press
Engine compartment cover
1
2
3
NOTICE
■After installing an engine compartment cover
Make sure the cover is securely installed in its original position.

GX460_OM_OM60L72U_(U)
4576-3. Do-it-yourself maintenance
6
Maintenance and care
With the engine at operating temperature and turned off, check the oil level on
the dipstick.
■Checking the engine oil
Park the vehicle on level ground. After warming up the engine and turning
it off, wait more than 5 minutes for the oil to drain back into the bottom of
the engine.
Holding a rag under the end, pull
the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the oil level.
Low
Normal
Excessive
The shape of the dipstick may dif-
fer depending on the type of vehi-
cle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
3
4
5
1
2
3
6

458
GX460_OM_OM60L72U_(U)6-3. Do-it-yourself maintenance
■Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of the
same type as already in the engine.
Make sure to check the oil type and prepare the items needed before adding
oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
■Engine oil consumption
A certain amount of engine oil will be consum ed while driving. In the following situations,
oil consumption may increase, and engine o il may need to be refilled in between oil
maintenance intervals.
●When the engine is new, for example directly after purchasing the vehicle or after
replacing the engine
●If low quality oil or oil of an inappropriate viscosity is used
●When driving at high engine speeds or with a heavy load, when towing, or when driving
while accelerating or de celerating frequently
●When leaving the engine idling for a long time, or when driving frequently through
heavy traffic
Engine oil selection P. 5 6 4
Oil quantity (Low  Full)1.6 qt. (1.5 L, 1.3 Imp.qt.)
ItemsClean funnel
1
2
3

GX460_OM_OM60L72U_(U)
4596-3. Do-it-yourself maintenance
6
Maintenance and careThe coolant level is satisfactory if it is between the “F” and “L” lines on the reser-
voir when the engine is cold.
Reservoir cap
“F”
“L”
If the level is on or below the “L” line, add
coolant up to the “F” line.
CAUTION
■Used engine oil
●Used engine oil contains potentially harm ful contaminants which may cause skin dis-
orders such as inflammation or skin cancer, so care should be taken to avoid pro-
longed and repeated contact. To remove used engine oil from your skin, wash
thoroughly with soap and water.
●Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of
used oil and filters in household trash, in sewers or onto the ground. Call your Lexus
dealer, service station or auto parts store for information concerning recycling or dis-
posal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly tightened.
Engine coolant
1
2
3

460
GX460_OM_OM60L72U_(U)6-3. Do-it-yourself maintenance
■Coolant selection
Only use “Toyota Super Long Life Coolant”
or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid
organic acid technology.
U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50 % coolant and 50 % deion-
ized water. (Minimum temperature: -31 F [-35 C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55 % coolant and 45% deion-
ized water. (Minimum temperature: -44 F [-42 C])
For more details about engine coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock and water
pump. If you cannot find a leak, have your Le xus dealer test the cap and check for leaks in
the cooling system.
CAUTION
■When the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and
antifreeze must be used to provide proper lubrication, corrosion protection and cool-
ing. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to pr event it from damage to parts or paint.