2016 TOYOTA 4RUNNER Owners Manual

3456-2. Maintenance
6
Maintenance and care
4RUNNER (U)_(OM35B23U)
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.
●When the battery is disconnected or discharged
Readiness codes that are set 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 indicating a temporary
malfunction and your vehicle may not pass the I/M test.
The error code in the OBD system will not be cleared unless the vehi-
cle is driven 40 or more times.
Contact your Toyota dealer to prepare the vehicle for re-testing.
Emission inspection and maintenance (I/M)
programs
Some states have vehicle emission inspection programs which
include OBD (On Board Diagnostics) checks. The OBD system
monitors the operation of the emission control system.
If the malfunction indicator lamp comes on
Your vehicle may not pass the I/M test in the following situations:
When the malfunction indicator lamp still remains on after sev-
eral driving trips
If your vehicle does not pass the I/M test

346
4RUNNER (U)_(OM35B23U)
6-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
Battery condition
(P. 360)
• Warm water• Baking soda
•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(P. 357)
• 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. 355)
• “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
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. 352)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)

3476-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)_(OM35B23U)
Fuses (P. 382)• Fuse with same amperage rating as original
Light bulbs (P. 385)
• Bulb with same number and wattage rating as
original
• Phillips-head screwdriver
• Flathead screwdriver• Wrench
Power steering fluid
level (P. 359)• Automatic transmission fluid DEXRON® II or III
• Rag or paper towel• Clean funnel
Radiator and con-
denser (P. 356)
Tire inflation pressure
(P. 371)• Tire pressure gauge
• Compressed air source
Washer fluid
(P. 363)
• Water or washer fluid containing antifreeze (for
winter use)
• Funnel (used only for adding water or washer
fluid)
ItemsParts and tools

3486-3. Do-it-yourself maintenance
4RUNNER (U)_(OM35B23U)
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 and 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.
■Safety glasses
Wear safety glasses to prevent flying or falling 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.

3496-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)_(OM35B23U)
Pull the hood lock release lever.
The hood will pop up slightly.
Push the auxiliary catch lever to
the left and lift the hood.
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.

3506-3. Do-it-yourself maintenance
4RUNNER (U)_(OM35B23U)
Engine compartment
Washer fluid tank (P. 363)
Power steering fluid reservoir
(P. 359)
Engine oil level dipstick
(P. 352)
Engine coolant reservoir
(P. 355)
Engine oil filler cap (P. 353)Brake fluid reservoir
(P. 357)
Fuse box (P. 382)
Battery (P. 360)
Condenser (P. 356)
Radiator (P. 356)1
2
3
4
5
6
7
8
9
10

3516-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)_(OM35B23U)■
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 that the cover is securely installed in its original position.

3526-3. Do-it-yourself maintenance
4RUNNER (U)_(OM35B23U)
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
differ depending on the type of
vehicle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
3
4
5
1
2
3
6