FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
What are the symptoms of a failing starter in the 2021 Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What are the symptoms of a failing starter in the 2021 Toyota Highlander?

What are the symptoms of a failing starter in the 2021 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Learn about the symptoms of a failing starter in the 2021 Toyota Highlander, diagnostic steps, tools required, and repair instructions.

Affected Component
starter
Estimated Time
2-3 hours

Symptoms

  • •Clicking Noise
  • •No Response
  • •Intermittent Starting Issues
  • •Starter Grinding Noise
  • •Smoke or Burnt Smell

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

  • •Multimeter
  • •Jumper wires
  • •Wrench set
  • •Screwdrivers
  • •Safety gloves and goggles
  • •Battery terminal cleaner
  • •Torque wrench

Additional Information

Affected Component
starter
Estimated Time
2-3 hours
Difficulty
medium
Severity
medium
Tools Required
7 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
Tools Required
  • Multimeter
  • Jumper wires
  • Wrench set (for removing the starter)
  • Screwdrivers
  • Safety gloves and goggles
  • Battery terminal cleaner
  • Torque wrench (if re-installing)
Repair Instructions

Step 1: Safety First

  • Ensure the vehicle is parked on a flat surface, and the ignition is off. Disconnect the negative battery terminal to prevent any accidental short circuits.

Step 2: Remove the Starter

  1. Locate the Starter: On the Highlander, the starter is usually located near the transmission. Refer to the owner's manual for precise location.
  2. Disconnect Wiring: Remove the electrical connectors from the starter. Note the arrangement for reinstallation.
  3. Remove Mounting Bolts: Use the appropriate size wrench to remove the bolts securing the starter to the engine block.
  4. Take Out the Starter: Carefully pull the starter out from its mounting location. Be cautious of any surrounding components.

Step 3: Testing the Starter

  • Bench Test: Connect the starter to a known good battery using jumper wires. If the starter does not engage, it needs to be replaced.

Step 4: Replace with New Starter

  1. Install New Starter: Position the new starter into place, aligning it with the mounting holes.
  2. Secure with Bolts: Tighten the bolts to the manufacturer's specified torque settings.
  3. Reconnect Wiring: Attach the electrical connectors to the new starter.

Step 5: Reconnect the Battery

  • Reconnect the negative battery terminal and ensure all connections are snug and free of corrosion.

Step 6: Test the Installation

  • Start the vehicle to confirm that the new starter operates correctly. Listen for any unusual noises and ensure the engine starts smoothly.
Conclusion

If all steps are followed and the symptoms persist, further diagnostics may be necessary, possibly involving the ignition switch, wiring harness, or the battery itself. Always refer to the specific vehicle service manual for detailed specifications and procedures.