2012 TOYOTA TUNDRA Owners Manual

537
4-2. Maintenance
4
Maintenance and care
Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which
include OBD (On Board Diagnostics) checks. The OBD system moni-
tors the operation of th e emission control system.
■If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere
in the emission control system. Your vehicle may not pass the I/
M test and may need to be repaired. Contact your Toyota dealer
to service the vehicle.
■ Your vehicle may not pass the I/M test:
●When the battery is disconnected or discharged
Readiness codes that are se t during ordinary driving are
erased.
Also, depending on your driving habits, the readiness codes
may not be completely set.
● When the fuel tank cap is loose
The malfunction indicator lamp comes on as a temporary mal-
function and your vehicle may not pass the I/M test.
■ When the malfunction indicator lamp goes off after several
driving trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
■ If your vehicle does not pass the I/M test
Contact your Toyota dealer to prepare the vehicle for re-testing.

538
4-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance yourself, be sure to follow the correct
procedures as given in these sections.
ItemsParts and tools
Battery condition ( P. 553)•Warm water
• Baking soda
• Grease
• Conventional wrench
(for terminal clamp bolts)
Brake fluid level ( P. 550)• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
• Rag or paper towel
Engine coolant level ( P. 549)• “Toyota Super Long Life Coolant”
or 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 pre-mixed with 50% coolant
and 50% deionized water.
Canada:
“Toyota Super Long Life Coolant”
is pre-mixed with 55% coolant
and 45% deionized water.
Engine oil level P. 545) • Toyota Genuine Motor Oil or
equivalent
• Rag or paper towel
• Funnel (used only for adding oil)
Fuses ( P. 577)• Fuse with same amperage rating
as original

539
4-3. Do-it-yourself maintenance
4
Maintenance and care
ItemsParts and tools
Light bulbs ( P. 588)• Bulb with same number and watt-
age rating as original
• Phillips-head screwdriver
• Flathead screwdriver
Power steering fluid level (P. 552) • Automatic transmission fluid
DEXRON
® II or III
• Rag or paper towel
Radiator and condenser (P. 550) 
Tire inflation pressure (
P. 565) • Tire pressure gauge
• Compressed air source
Washer fluid
(P. 555) • Water
• Washer fluid containing antifreeze
(for winter use)

540 4-3. Do-it-yourself maintenance
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 compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
● Take care because brake fluid can harm your hands or eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with
clean water immediately.
If you still experience discomfort, see a doctor.
■ When working near the cooling fan or radiator grille
Be sure the engine switch is off.
With the engine switch on, the cooling fan may automatically start to run if
the air conditioning is on and/or the coolant temperature is high.
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.

541
4-3. Do-it-yourself maintenance
4
Maintenance and care
NOTICE
■
If you remove the air cleaner
Driving with the air cleaner removed may cause excessive engine wear due
to dirt in the air. Also a backfire could cause a fire in the engine compart-
ment.
■ If the brake fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads
wear or when the brake fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious pro\
blem.

542
4-3. Do-it-yourself maintenance
Hood
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.
Release the lock from the inside of the vehicle to open the hood.
Pull the hood lock release
lever.
The hood will pop up slightly.
Pull up the hood catch lever
and lift the hood.

543
4-3. Do-it-yourself maintenance
4
Maintenance and care
Engine compar tment
4.0L V6 (1GR-FE) engine
Washer fluid tank (P. 555)
Engine oil level dipstick ( P. 545)
Engine coolant reservoir ( P. 549)
Engine oil filler cap ( P. 546)Brake fluid reservoir
( P. 550)
Fuse box ( P. 577)
Battery ( P. 553)
Radiator ( P. 550)
Condenser ( P. 550)
Power steering fluid reservoir ( P. 552)

544 4-3. Do-it-yourself maintenance
4.6L V8 (1UR-FE) and 5.7L V8 (3UR-FE, 3UR-FBE) engines
Washer fluid tank (P. 555)
Engine oil level dipstick ( P. 545)
Engine coolant reservoir ( P. 549)
Engine oil filler cap ( P. 546)Brake fluid reservoir
( P. 550)
Fuse box ( P. 577)
Battery ( P. 553)
Radiator ( P. 550)
Condenser ( P. 550)
Power steering fluid reservoir ( P. 552)