FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
What should I do if my 2020 Toyota Highlander has a burning smell? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What should I do if my 2020 Toyota Highlander has a burning smell?

What should I do if my 2020 Toyota Highlander has a burning smell?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
600 words

Problem Statement

Learn how to diagnose and resolve a burning smell in your 2020 Toyota Highlander with detailed steps and necessary tools.

Affected Component
engine, brakes, electrical system

Symptoms

  • •Burning Odor
  • •Engine Warning Light
  • •Unusual Sounds
  • •Smoke

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9

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

  • •Basic Hand Tools
  • •Multimeter
  • •Brake Pad Thickness Gauge
  • •Coolant Tester
  • •Flashlight

Additional Information

Affected Component
engine, brakes, electrical system
Difficulty
medium
Severity
medium
Tools Required
5 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnosing and Resolving a Burning Smell in a 2020 Toyota Highlander

A burning smell in your 2020 Toyota Highlander can indicate several potential issues. It’s crucial to diagnose the problem accurately to avoid further damage or safety hazards. Below are detailed steps to identify the cause and resolve the issue.

Step 1: Safety First
  • Park the Vehicle: Ensure the vehicle is parked on a flat surface and the engine is turned off.
  • Engage the Parking Brake: Prevents any movement during inspection.
Step 2: Visual Inspection
  • Check for Fluid Leaks: Look under the vehicle for any leaks that may indicate oil, coolant, or transmission fluid.
  • Inspect Under the Hood:
    • Open the hood and check for any signs of burnt wires, melted insulation, or components.
    • Look for any oil or fluid on the exhaust manifold, which can cause a burning smell.
Step 3: Brake Inspection
  • Inspect Brake Components:
    • Check for worn brake pads or shoes. If pads are worn down, they can make a burning smell when heated.
    • Inspect brake calipers for sticking or overheating.
Step 4: Check Electrical Components
  • Inspect Wiring and Connectors: Look for frayed or damaged wires in the engine bay or undercarriage.
  • Examine Fuses and Relays: Check for any signs of burning or melting in the fuse box.
Step 5: Monitor Engine Temperature
  • Check Coolant Level: Ensure the coolant is at the proper level, as overheating can cause burning smells.
  • Inspect Radiator and Hoses: Look for any signs of damage or leaks in the cooling system.
Tools Required
  • Basic Hand Tools: Wrenches, socket set, screwdrivers.
  • Multimeter: For electrical diagnostics.
  • Brake Pad Thickness Gauge: To measure brake pad wear.
  • Coolant Tester: To check coolant condition.
  • Flashlight: For inspecting dark areas under the hood and vehicle.
Repair Instructions
If the Smell is from the Engine Bay:

  1. Address Fluid Leaks:

    • Clean any spilled fluids and replace gaskets or seals as needed.
    • If oil is leaking onto the exhaust, repair the leak and clean the area thoroughly.

  2. Repair Wiring Issues:

    • If damaged wires are found, cut and splice them, ensuring proper insulation and protection.

  3. Coolant System Repair:

    • Replace any damaged hoses or replace the radiator if leaks are present.
    • Refill the cooling system and bleed any air pockets.
If the Smell is from the Brakes:

  1. Replace Worn Brake Pads:

    • Remove the wheel and inspect brake components.
    • Replace any worn brake pads or shoes with parts that meet OEM specifications.
    • Ensure calipers are functioning properly and free from sticking.

  2. Check Brake Fluid:

    • If burned, replace with new fluid and bleed the brake lines.
If the Smell is Electrical:
  1. Replace Faulty Components:
    • Replace any burnt fuses or relays.
    • Repair or replace any damaged electrical wiring.
Conclusion

After completing the repairs, take the vehicle for a test drive to ensure the burning smell is no longer present. If the smell persists or you're unable to identify the source, it’s advisable to consult a certified Toyota technician for a thorough inspection. Always prioritize safety when working on your vehicle.