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What should I do if my 2022 Toyota Highlander won’t start? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What should I do if my 2022 Toyota Highlander won’t start?

What should I do if my 2022 Toyota Highlander won’t start?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
697 words

Problem Statement

Learn how to diagnose and fix starting issues with your 2022 Toyota Highlander. Follow our step-by-step guide for effective troubleshooting.

Affected Component
starting system

Symptoms

  • •No Crank
  • •Clicking Sound
  • •Dashboard Lights
  • •Dim Lights
  • •Engine Turns Over but Doesn't Start

Diagnostic Steps

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

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
  • •battery terminal cleaner
  • •wrench
  • •screwdriver
  • •jumper cables
  • •fuse puller or needle-nose pliers
  • •fuel pressure gauge
  • •safety goggles
  • •OBD-II scanner

Additional Information

Affected Component
starting system
Difficulty
medium
Severity
medium
Tools Required
9 items

Related Faults

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Back to Generation

If your 2022 Toyota Highlander won't start, there can be various reasons behind the issue. Below is a structured guide to help you diagnose and potentially resolve the problem.

Step 1: Check Battery Condition

  • Tools Required: Multimeter, battery terminal cleaner, wrench.
  • Instructions:
    1. Open the hood and locate the battery.
    2. Use a multimeter to check the battery voltage; a healthy battery should read around 12.6 volts.
    3. If the voltage is below 12.4 volts, the battery may be weak or discharged.
    4. Inspect battery terminals for corrosion or loose connections, and clean them if necessary.

Step 2: Starter Motor Check

  • Tools Required: Multimeter, screwdriver, jumper cables.
  • Instructions:
    1. If there is a clicking sound, it may indicate a faulty starter motor or solenoid.
    2. Try tapping the starter gently with a hammer while someone turns the key to the start position. This can sometimes free a stuck starter.
    3. Use a multimeter to check for voltage at the starter terminal when the ignition is turned on. If voltage is present and the starter does not engage, the starter may need replacement.

Step 3: Check Fuses

  • Tools Required: Fuse puller or needle-nose pliers.
  • Instructions:
    1. Locate the fuse box (usually found under the dashboard or in the engine compartment).
    2. Inspect the fuses related to the starting system (refer to the owner’s manual for specific fuse locations).
    3. Replace any blown fuses with the same amperage rating.

Step 4: Inspect Fuel Supply

  • Tools Required: Fuel pressure gauge, safety goggles.
  • Instructions:
    1. Ensure there is fuel in the tank.
    2. Use a fuel pressure gauge to check the fuel system pressure at the fuel rail.
    3. If no fuel pressure is present, the fuel pump may be faulty or there could be an issue with the fuel pump relay.

Step 5: Check for Error Codes

  • Tools Required: OBD-II scanner.
  • Instructions:
    1. Plug an OBD-II scanner into the vehicle's diagnostic port.
    2. Check for any fault codes that may indicate a specific issue with the engine or starting system.
    3. Address any codes that are present, as they can lead directly to the problem.
Repair Instructions

Once you have diagnosed the issue, proceed with the appropriate repairs based on your findings.

Repairing/Replacing the Battery

  • If the battery is weak or dead:
    1. Disconnect the negative terminal first, followed by the positive terminal.
    2. Remove the old battery and replace it with a new one, connecting the positive terminal first, then the negative terminal.

Replacing the Starter Motor

  • If the starter motor is faulty:
    1. Disconnect the negative battery terminal.
    2. Remove the starter motor from its mounting (may require removing surrounding components for access).
    3. Disconnect electrical connectors and remove the starter.
    4. Install the new starter in reverse order.

Resolving Fuel Issues

  • If the fuel pump is faulty:
    1. Disconnect the negative battery terminal.
    2. Access the fuel pump (usually located in the fuel tank).
    3. Remove the fuel pump assembly and replace with a new unit.
    4. Reconnect everything and test for fuel pressure.
Final Checks
  • After performing repairs, reconnect the battery and attempt to start the vehicle.
  • If the vehicle starts, allow it to run for a few minutes and check for any warning lights or issues.
Conclusion

If after following these steps your Toyota Highlander still won't start, it may be necessary to consult a professional technician or visit a dealership as the issue could be more complex, such as an immobilizer problem or internal engine issue.