Why do I hear a clicking noise when starting my 2020 Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

4 min read

668 words

Problem Statement

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

Affected Component

starting system

Estimated Time

1-3 hours

Symptoms

•A distinct clicking noise when turning the key to start the engine or pressing the start button.
•The engine does not crank or start.
•Dashboard lights may illuminate briefly but go dim when attempting to start.

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
•Battery terminal cleaner
•Wrench set
•Jumper cables
•OBD-II scanner

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Solution

Problem Diagnosis: Clicking Noise When Starting a 2020 Toyota Highlander

Possible Causes

Weak Battery: Insufficient voltage to start the engine.
Bad Starter Motor: Starter may be failing or faulty.
Corroded or Loose Battery Connections: Poor electrical connections can affect starting.
Faulty Ignition Switch: Issues with the ignition system can prevent starting.
Electrical Issues: Problems with wiring or fuses.

Tools Required

Digital multimeter
Battery terminal cleaner
Wrench set (for battery terminals)
Jumper cables (for jump-starting)
OBD-II scanner (optional, for advanced diagnostics)

Step 1: Check Battery Voltage

Turn Off All Accessories: Ensure the vehicle is completely off.
Test Battery Voltage:
- Set your multimeter to DC voltage.
- Connect the red probe to the positive terminal and the black probe to the negative terminal.
- A healthy battery should read between 12.4V and 12.7V. If the reading is below 12.4V, the battery may be weak.

Step 2: Inspect Battery Connections

Visual Inspection:
- Check battery terminals for corrosion (white or green powdery substance).
- Ensure the connections are tight.
Clean Terminals:
- If corrosion is present, use a battery terminal cleaner or a wire brush to clean the terminals.
- Reconnect and ensure they are tight.

Step 3: Jump Start the Vehicle

Using Jumper Cables:
- Connect the red cable to the positive terminal of the dead battery and the other end to the positive terminal of a good battery.
- Connect the black cable to the negative terminal of the good battery and the other end to an unpainted metal surface on the dead vehicle.
- Start the vehicle with the good battery. If the Highlander starts, the battery may need replacement.

Step 4: Check the Starter Motor

Locate the Starter: It is usually found near the transmission at the engine's bottom.
Tap the Starter:
- Lightly tap the starter motor with a hammer or wrench while someone else attempts to start the car. Sometimes, a stuck starter can free up this way.
Test the Starter:
- If tapping doesn’t work, you may need to test the starter with a multimeter or replace it if it fails.

Step 5: Inspect the Ignition Switch

Turn the Key: When you turn the key, listen for any clicks from the ignition switch.
Test with OBD-II Scanner:
- If you have the capability, connect an OBD-II scanner to check for any related trouble codes that may indicate an ignition system fault.

Step 6: Check Fuses and Wiring

Inspect Fuses: Locate the fuse box (consult your owner's manual) and check for any blown fuses related to the starting system.
Wiring Inspection: Look for any damaged or frayed wires leading to the starter and battery.

Repair Instructions

Battery Replacement:
- If the battery is weak, replace it. Remove the old battery by loosening the terminal bolts (negative first, then positive), and install the new battery in reverse order. Ensure all connections are tight.
Starter Replacement:
- If the starter is faulty, disconnect the negative battery terminal.
- Remove the starter by unscrewing the mounting bolts and disconnecting the wiring harness.
- Install the new starter by reversing the removal steps.
Ignition Switch Replacement:
- If the ignition switch is faulty, it may require disassembly of the steering column. Consult the service manual for specific procedures.
Repair Wiring:
- Any damaged wires should be repaired or replaced to ensure proper current flow.

Conclusion

After performing these diagnostic steps and repairs, start the vehicle again. If the clicking noise persists despite everything being in order, further diagnostic work may be necessary to explore deeper electrical issues.

Why do I hear a clicking noise when starting my 2020 Highlander?

Problem Statement

Symptoms

Diagnostic Steps

Solution

💡 Expert Tip

Verification

Prevention Tips

Tools & Equipment Required

Related Faults

Share this solution

Comments

Why do I hear a clicking noise when starting my 2020 Highlander?

Problem Statement

Symptoms

Diagnostic Steps

Solution

Possible Causes

Tools Required

Step 1: Check Battery Voltage

Step 2: Inspect Battery Connections

Step 3: Jump Start the Vehicle

Step 4: Check the Starter Motor

Step 5: Inspect the Ignition Switch

Step 6: Check Fuses and Wiring

💡 Expert Tip

Verification

Prevention Tips

Tools & Equipment Required

Related Faults

Share this solution

Comments

Possible Causes

Tools Required

Step 1: Check Battery Voltage

Step 2: Inspect Battery Connections

Step 3: Jump Start the Vehicle

Step 4: Check the Starter Motor

Step 5: Inspect the Ignition Switch

Step 6: Check Fuses and Wiring