Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2007HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISMAINTENANCESERVICE AND REPAIRENGINE - GENERAL MAINTENANCE
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Engine - General Maintenance
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Engine - General Maintenance
ENGINE
GENERAL MAINTENANCE
HINT: Inspect these items on a cooled down engine.
1. REPLACE TIMING BELT OR CHAIN
2. INSPECT DRIVE BELT
3. INSPECT SPARK PLUGS
4. INSPECT AIR FILTER
a. Remove the air filter.
b. Visually check that the air filter is not excessively damaged or oily.
HINT: Oiliness may indicate that the PCV valve is stuck.
If necessary, replace the air filter.
c. Clean the filter with compressed air. First blow from the inside thoroughly, and then blow from the outside of the filter.
d. Reinstall the air filter.
5. REPLACE AIR CLEANER FILTER
a. Replace the air filter with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER
7. INSPECT ENGINE COOLANT
8. INSPECT GASKET IN FUEL TANK CAP
9. INSPECT FUEL LINES AND CONNECTIONS, FUEL TANK VAPOR VENT SYSTEM HOSES AND FUEL TANK BANDS
a. Visually check the fuel lines for cracks, leakage, loose connections, deformation or tank band looseness.
10. INSPECT EXHAUST PIPES AND MOUNTINGS
a. Visually check the pipes, hangers and connections for severe corrosion, leaks or damage.
11. INSPECT VALVE CLEARANCE
GENERAL MAINTENANCE
HINT: Inspect these items on a cooled down engine.
1. REPLACE TIMING BELT OR CHAIN
2. INSPECT DRIVE BELT
3. INSPECT SPARK PLUGS
4. INSPECT AIR FILTER
a. Remove the air filter.
b. Visually check that the air filter is not excessively damaged or oily.
HINT: Oiliness may indicate that the PCV valve is stuck.
If necessary, replace the air filter.
c. Clean the filter with compressed air. First blow from the inside thoroughly, and then blow from the outside of the filter.
d. Reinstall the air filter.
5. REPLACE AIR CLEANER FILTER
a. Replace the air filter with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER
7. INSPECT ENGINE COOLANT
8. INSPECT GASKET IN FUEL TANK CAP
9. INSPECT FUEL LINES AND CONNECTIONS, FUEL TANK VAPOR VENT SYSTEM HOSES AND FUEL TANK BANDS
a. Visually check the fuel lines for cracks, leakage, loose connections, deformation or tank band looseness.
10. INSPECT EXHAUST PIPES AND MOUNTINGS
a. Visually check the pipes, hangers and connections for severe corrosion, leaks or damage.
11. INSPECT VALVE CLEARANCE
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.