how to fix my Toyota Highlander Third Generation (2014-2019) that won’t start and just clicks?

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

641 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 Toyota Highlander (2014-2019). 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.
•Ensure the vehicle is securely lifted and supported when working underneath.

Symptoms

•Engine does not crank, only a clicking sound is heard
•Dashboard lights may flicker or dim when the key is turned
•No response from the starter motor
•Battery warning light may illuminate
•Possible issues with electrical accessories functioning

Diagnostic Steps

1
Check the battery voltage using a multimeter; ensure it reads at least 12.4 volts.
2
Inspect battery terminals for corrosion, looseness, or damage.
3
Test the starter relay by swapping it with a similar relay in the fuse box.
4
Use an OBD-II scanner to check for any trouble codes that may indicate electrical issues.
5
Inspect the fuses related to the starting system for any blown fuses.
6
Check the connections and condition of the starter motor.

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
•Wire brush
•Socket set
•Torque wrench
•OBD-II scanner
•Jack and jack stands

Parts Required

•New battery (if faulty)
•Starter relay (if faulty)
•Fuses (if blown)
•Starter motor (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the battery voltage using a multimeter; ensure it reads at least 12.4 volts.
2
Inspect battery terminals for corrosion, looseness, or damage.
3
Test the starter relay by swapping it with a similar relay in the fuse box.
4
Use an OBD-II scanner to check for any trouble codes that may indicate electrical issues.
5
Inspect the fuses related to the starting system for any blown fuses.
6
Check the connections and condition of the starter motor.

Solution

1. Preparation

Gather tools and parts as necessary.
Ensure the vehicle is parked on a level surface, and engage the parking brake.
Disconnect the battery negative terminal to prevent electrical shorts.

2. Battery Inspection and Replacement

Inspect Battery Condition
- Clean any corrosion from battery terminals using a wire brush.
- Tighten the connections if they are loose.
Test Battery Voltage
- Reconnect the battery and use a multimeter to test voltage.
- If the voltage is below 12.4 volts, charge the battery or replace it if necessary.
Replace Battery (if needed)
- Remove the negative terminal, followed by the positive terminal.
- Remove the battery hold-down bracket and lift out the battery.
- Insert the new battery, reconnect the positive terminal first, and then the negative terminal.

3. Starter Relay and Fuse Check

Check and Replace Relay
- Locate the starter relay in the fuse box.
- Swap it with a similar relay to see if the starting function improves.
Inspect and Replace Fuses
- Check the fuses related to the starting system.
- Replace any blown fuses with the same amperage rating.

4. Starter Motor Inspection

Access the Starter Motor
- Lift the vehicle using jack stands for safety.
- Locate the starter motor, typically near the transmission.
Inspect Connections
- Check the wiring and connections to the starter motor for damage or corrosion.
- Tighten any loose connections.
Test Starter Function
- Use a multimeter to check for voltage at the starter terminal when the key is turned to the start position.
- If no voltage is present, the starter may need replacement.
Replace Starter (if needed)
- Disconnect the battery again.
- Remove the wiring from the starter motor, then unbolt the starter and remove it.
- Install the new starter and reconnect all wiring.