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how to check fuses in Toyota Highlander Third Generation (2014-2019) - Toyota Highlander
Home/Cars/Toyota/Highlander/Third Generation (2014-2019)/how to check fuses in Toyota Highlander Third Generation (2014-2019)

how to check fuses in Toyota Highlander Third Generation (2014-2019)

Toyota Highlander Third Generation (2014-2019)

Error Codes
30 minutes to 1 hour
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
512 words

Problem Statement

Learn how to check and replace fuses in a 2014-2019 Toyota Highlander. Step-by-step guide to diagnose electrical issues and restore functionality.

Affected Component
Electrical
Estimated Time
30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Ensure the vehicle is completely off before inspecting or replacing fuses to avoid electrical shock or short circuits.

Symptoms

  • •Non-functional electrical components (e.g., lights, radio, power windows)
  • •Blown fuse indicator on the dashboard (if equipped)
  • •Inconsistent operation of interior or exterior lights
  • •Malfunctioning accessories or features (e.g., heated seats, wipers)

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

  • •Fuse puller
  • •Needle-nose pliers
  • •Multimeter
  • •Fuse tester

Parts Required

  • •Replacement fuses (specific amperage based on vehicle requirements)

Additional Information

Affected Component
Electrical
Estimated Time
30 minutes to 1 hour
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
1 item

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Solution
1. Preparation
  • Ensure the vehicle is turned off and parked on a level surface.
  • Open the driver's side door and locate the fuse box under the dashboard.
  • Gather tools: fuse puller or needle-nose pliers, multimeter or fuse tester.
2. Access the Fuse Boxes
  • Under-Dashboard Fuse Box:
    • Remove the cover of the under-dash fuse box by pulling off or unscrewing it.
  • Engine Compartment Fuse Box:
    • Open the hood and locate the fuse box near the battery. Remove the cover by unclipping or unscrewing it.
3. Inspect and Test Fuses
  • Use the diagram on the fuse box cover to identify fuses related to the malfunctioning components.
  • Carefully pull out the fuses using the fuse puller.
  • Visual Inspection:
    • Check for a broken filament or signs of burning.
  • Electrical Testing:
    • Set the multimeter to continuity mode.
    • Touch the probes to the ends of the fuse. A beep indicates continuity; no beep indicates a blown fuse.
4. Replace Blown Fuses
  • If a fuse is found to be blown, replace it with a fuse of the same amperage rating (indicated on the fuse itself).
  • Ensure the new fuse is seated securely in the fuse box.
5. Reassemble and Test
  • Reattach the fuse box covers securely.
  • Turn on the vehicle and check if the previously malfunctioning components are now operational.