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Why does my 2020 Toyota Highlander have a burning oil smell? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/Why does my 2020 Toyota Highlander have a burning oil smell?

Why does my 2020 Toyota Highlander have a burning oil smell?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
609 words

Problem Statement

Learn about the causes, symptoms, and repair steps for a burning oil smell in your 2020 Toyota Highlander. Get diagnostic tips and necessary tools.

Affected Component
engine
Estimated Time
2-4 hours

Symptoms

  • •Burning Oil Odor
  • •Oil Leaks
  • •Check Engine Light
  • •Smoke

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •Oil dipstick
  • •OBD-II scanner
  • •Torque wrench
  • •Socket set (metric)
  • •Oil filter wrench
  • •Clean rags
  • •Engine degreaser
  • •Safety gloves and goggles

Additional Information

Affected Component
engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
8 items

Related Faults

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Back to Generation
Burning Oil Smell in a 2020 Toyota Highlander
Tools Required
  • Oil dipstick
  • OBD-II scanner
  • Torque wrench
  • Socket set (metric)
  • Oil filter wrench
  • Clean rags
  • Engine degreaser (if cleaning is needed)
  • Safety gloves and goggles

Repair Instructions

Step 1: Addressing Leaks

  1. Valve Cover Gasket Replacement:

    • If the valve cover gasket is leaking:
      1. Remove the engine cover (if applicable).
      2. Use a socket set to remove the bolts securing the valve cover.
      3. Lift off the valve cover carefully, ensuring no debris falls into the engine.
      4. Remove the old gasket and clean the mating surfaces thoroughly.
      5. Apply a light coat of RTV sealant (if required) and install the new gasket.
      6. Reinstall the valve cover and torque the bolts to manufacturer specifications.

  2. Oil Pan Gasket Replacement:

    • If the oil pan gasket is leaking:
      1. Raise the vehicle securely on jack stands.
      2. Remove the oil drain plug and drain the engine oil.
      3. Remove any components obstructing access to the oil pan (e.g., exhaust components).
      4. Remove the bolts securing the oil pan and gently pry it off.
      5. Clean the oil pan and engine block surfaces thoroughly.
      6. Install the new gasket and reattach the oil pan, torquing the bolts to specs.
      7. Refill the engine with oil.
Step 2: Checking Engine Components
  • If there are signs of oil burning in the combustion chamber:
    1. Inspect Piston Rings and Valve Seals:
      • This is a more complex procedure and may require engine disassembly.
      • Consider professional assistance if engine internals are suspected to be the issue.
Step 3: Clear Codes and Test Drive
  1. Clear any trouble codes using the OBD-II scanner.
  2. Take the vehicle for a test drive to monitor for the return of burning oil smell or any engine performance issues.
Conclusion

If you continue to experience the burning oil smell after performing these checks and repairs, it is advisable to consult a professional mechanic for further diagnosis and repair. Persistent oil burning issues may lead to more severe engine problems if not addressed promptly.