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Why does my 2020 Toyota Highlander make a clicking noise when starting? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/Why does my 2020 Toyota Highlander make a clicking noise when starting?

Why does my 2020 Toyota Highlander make a clicking noise when starting?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
2-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
604 words

Problem Statement

Learn how to diagnose and fix a clicking noise when starting your 2020 Toyota Highlander, including symptoms, diagnostic steps, and repair instructions.

Affected Component
battery, starter motor, ignition system
Estimated Time
2-3 hours

Symptoms

  • •A distinct clicking noise when attempting to start the engine.
  • •The engine does not turn over.
  • •Dashboard lights may illuminate, but no further sounds or engine activity occurs.

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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

  • •Digital multimeter or voltmeter
  • •Battery load tester
  • •Wrench set
  • •Wire brush or battery cleaning solution
  • •Socket set
  • •OBD-II scanner

Additional Information

Affected Component
battery, starter motor, ignition system
Estimated Time
2-3 hours
Difficulty
medium
Severity
medium
Tools Required
6 items

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Diagnosing a Clicking Noise When Starting a 2020 Toyota Highlander

Step 1: Initial Observation
  • Check Battery Condition: Look for any dashboard warning lights that indicate battery issues, such as the battery or check engine light.
  • Listen Closely: Identify if the clicking noise is coming from the engine bay or the cabin area.
Step 2: Battery Voltage Testing
  • Tools Required: Digital multimeter or voltmeter.
  • Procedure:
    1. Turn off all accessories (radio, lights, etc.).
    2. Set the multimeter to measure DC voltage.
    3. Connect the red lead to the positive terminal of the battery and the black lead to the negative terminal.
    4. A fully charged battery should read between 12.6 to 12.8 volts. If the reading is below 12.4 volts, the battery may be weak or discharged.
Step 3: Battery Load Test
  • Tools Required: Battery load tester.
  • Procedure:
    1. Disconnect the battery cables (negative first).
    2. Connect the load tester’s clamps to the battery terminals.
    3. Apply the load as per the tester's instructions (usually around half of the battery's CCA rating).
    4. Observe the voltage reading; it should not drop below 9.6 volts under load. If it does, replace the battery.
Step 4: Check for Corroded or Loose Cables
  • Tools Required: Wrench set, wire brush or battery cleaning solution.
  • Procedure:
    1. Inspect battery terminals for corrosion (white, chalky substance).
    2. If corrosion is present, clean the terminals and cables using a wire brush or battery cleaning solution.
    3. Ensure the battery cables are tightly secured to the terminals.
Step 5: Check Starter Motor
  • Tools Required: Socket set, multimeter.
  • Procedure:
    1. Locate the starter motor (usually near the transmission at the front of the engine).
    2. Inspect the wiring to the starter for any damage or loose connections.
    3. Use the multimeter to check for voltage at the starter terminal when the key is turned to the start position. You should see battery voltage (around 12 volts).
    4. If there is voltage and the starter is not engaging, it may be faulty.
Step 6: Inspect the Ignition System
  • Tools Required: OBD-II scanner.
  • Procedure:
    1. Connect the OBD-II scanner to the vehicle’s diagnostic port.
    2. Check for any trouble codes that may indicate issues with the ignition system.
    3. If codes indicate problems, address those as needed (e.g., faulty ignition switch).
Repair Instructions
Battery Replacement

  1. Remove the Old Battery:

    • Disconnect the negative terminal first, then the positive terminal.
    • Remove any brackets or clamps securing the battery.
    • Lift the battery out of the tray.

  2. Install New Battery:

    • Place the new battery in the tray.
    • Secure it with clamps or brackets.
    • Connect the positive terminal first, followed by the negative terminal.
Starter Replacement (if necessary)

  1. Remove Starter:

    • Disconnect the negative battery terminal.
    • Remove the electrical connections from the starter.
    • Unbolt the starter from its mounting points.

  2. Install New Starter:

    • Position the new starter in place and secure it with bolts.
    • Reconnect the electrical terminals.
Conclusion

After completing the necessary repairs or replacements, attempt to start the vehicle again. If the clicking noise has stopped and the engine starts successfully, the issue has been resolved. If the problem persists, further diagnostics may be required, possibly indicating issues with the ignition switch or the vehicle's ECU.