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

Why does my 2020 Highlander have a burning smell?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Learn how to diagnose and fix a burning smell in your 2020 Toyota Highlander, including symptoms, diagnostic steps, and required tools.

Affected Component
Electrical system, Brake system

Symptoms

  • •Noticeable burning smell, which may have a rubber-like or electrical odor.
  • •Potential smoke coming from under the hood or near the wheels.
  • •Unusual noises (squealing or grinding) when braking or accelerating.
  • •Warning lights on the dashboard may illuminate, such as the check engine light or brake warning.

Diagnostic Steps

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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

  • •Safety gloves and goggles
  • •Jack and jack stands (if inspecting the undercarriage)
  • •Wrench set
  • •Pliers
  • •Multimeter (for electrical checks)
  • •Brake pad gauge or caliper tool
  • •Flashlight
  • •Engine oil or transmission fluid (if refills are needed)

Additional Information

Affected Component
Electrical system, Brake system
Difficulty
medium
Severity
medium
Tools Required
8 items

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Problem: Burning Smell from 2020 Toyota Highlander

Tools Required:

  • Safety gloves and goggles
  • Jack and jack stands (if inspecting the undercarriage)
  • Wrench set
  • Pliers
  • Multimeter (for electrical checks)
  • Brake pad gauge or caliper tool
  • Flashlight
  • Engine oil or transmission fluid (if refills are needed)
Repair Instructions:

1. Electrical Issues:

  • If you discover burnt wires:
    • Disconnect the battery before working on electrical components.
    • Cut out the damaged section of wire and splice in a new wire using solder or wire connectors.
    • Wrap the repaired area with electrical tape and ensure it is secured away from hot surfaces.

2. Brake System:

  • If brake pads are worn:
    • Loosen the lug nuts on the wheel where you suspect the issue.
    • Use a jack to lift the vehicle and secure it with jack stands.
    • Remove the wheel and inspect the brake pads and rotors.
    • If pads are less than 3mm thick, replace them.
    • To replace pads:
      1. Remove the caliper bolts using a wrench.
      2. Slide the caliper off the rotor and hang it with a wire (do not let it dangle on the brake line).
      3. Remove the old brake pads and replace them with new ones.
      4. Compress the caliper piston using a caliper tool.
      5. Reassemble the caliper and wheel, and lower the vehicle.

3. Fluid Leaks:

  • If fluid levels are low:
    • Identify the source of the leak.
    • Replace any damaged hoses or seals.
    • Refill the necessary fluids (engine oil, transmission fluid, etc.) to the appropriate levels.
Conclusion:

After performing the above steps, take the vehicle for a test drive to see if the burning smell persists. If the smell continues or if you are unsure about any findings, it’s advisable to consult a professional mechanic for further diagnosis. Ignoring a burning smell can lead to more severe mechanical issues or safety hazards.