my Toyota Highlander Third Generation (2014-2019) won't start and makes a clicking noise

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

563 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix a no-start condition in a 2014-2019 Toyota Highlander. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before accessing the starter motor.

Symptoms

•Clicking noise when turning the ignition key
•Engine does not crank
•Dashboard lights may dim or flicker
•Possible clicking sound from the starter relay or solenoid
•No response or intermittent response from the ignition system

Diagnostic Steps

1
Inspect the battery terminals for corrosion and ensure they are tight.
2
Use a multimeter to check the battery voltage; it should read around 12.6 volts or higher.
3
Test the starter relay by swapping it with another relay of the same type.
4
Check fuses related to the starting system for any blown fuses.
5
Inspect the wiring to the starter motor for any visible damage or loose connections.
6
Perform a voltage drop test on the starter circuit to ensure proper power delivery.

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
•Socket set
•Jumper wire
•Wire brush
•Jack and jack stands

Parts Required

•Battery (if defective)
•Starter motor (if defective)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the battery terminals for corrosion and ensure they are tight.
2
Use a multimeter to check the battery voltage; it should read around 12.6 volts or higher.
3
Test the starter relay by swapping it with another relay of the same type.
4
Check fuses related to the starting system for any blown fuses.
5
Inspect the wiring to the starter motor for any visible damage or loose connections.
6
Perform a voltage drop test on the starter circuit to ensure proper power delivery.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a flat surface with the transmission in "Park" (or "Neutral" for manual transmissions).
Disconnect the negative battery terminal to prevent electrical shock or short circuits.

2. Battery Inspection and Replacement

Check Battery Voltage
- Use a multimeter to measure the battery voltage.
- If the voltage is below 12.4 volts, charge the battery or replace it if it holds no charge.
Clean Battery Terminals
- Remove the battery terminals using a socket wrench.
- Clean the terminals and battery posts with a wire brush to remove corrosion.
- Reconnect the terminals securely.

3. Starter Motor Inspection

Access the Starter
- Raise the vehicle using a jack and secure it on jack stands.
- Locate the starter motor (typically located near the transmission).
Test Starter Functionality
- Disconnect the wiring harness from the starter motor.
- Use a jumper wire to connect the positive terminal of the battery directly to the starter terminal; listen for a clicking noise from the starter.
- If the starter does not engage, it may need replacement.

4. Replace Starter Motor (if needed)

Remove the Starter Motor
- Unbolt the starter motor from its mounting using a socket set.
- Carefully maneuver the starter out of its location.
Install New Starter Motor
- Position the new starter motor in place.
- Secure it with bolts to the mounting bracket, ensuring proper torque (typically around 30-40 ft-lbs).
- Reconnect the wiring harness to the starter.