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What are the signs of a failing starter in the 2020 Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What are the signs of a failing starter in the 2020 Toyota Highlander?

What are the signs of a failing starter in the 2020 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Learn about the symptoms of a failing starter in the 2020 Toyota Highlander, diagnostic steps, and how to replace the starter.

Affected Component
starter
Estimated Time
2-3 hours

Symptoms

  • •Clicking Noise
  • •Engine Does Not Crank
  • •Intermittent Starting Issues
  • •Dashboard Lights Flickering
  • •Burning Smell
  • •Grinding Noise

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

  • •Flashlight
  • •basic hand tools (screwdriver, socket set)
  • •Multimeter or battery tester
  • •Multimeter or test light
  • •fuse puller
  • •jumper cables
  • •Socket set (including a ratchet and extensions)
  • •Wrench set
  • •Torque wrench
  • •Safety glasses and gloves
  • •Jack and jack stands (if necessary)

Additional Information

Affected Component
starter
Estimated Time
2-3 hours
Difficulty
medium
Severity
medium
Tools Required
11 items

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Signs of a Failing Starter in the 2020 Toyota Highlander

A failing starter can lead to difficulty starting your vehicle, leaving you stranded. Here are the common symptoms indicating a starter issue in the 2020 Toyota Highlander:

Step 1: Visual Inspection
  • Tools Required: Flashlight, basic hand tools (screwdriver, socket set).
  • Instructions:
    • Open the hood and visually inspect the starter for any loose or corroded connections.
    • Check the battery terminals for corrosion or loose connections.
Step 2: Battery Test
  • Tools Required: Multimeter or battery tester.
  • Instructions:
    • Use a multimeter to check the battery voltage. A healthy battery should read around 12.6 volts when fully charged.
    • If the voltage is below 12.4 volts, consider charging or replacing the battery.
Step 3: Starter Relay and Fuse Check
  • Tools Required: Multimeter or test light, fuse puller.
  • Instructions:
    • Locate the starter relay in the fuse box (refer to the owner's manual for location).
    • Check the relay by swapping it with a similar relay in the fuse box. If the starter works with the swapped relay, replace the faulty relay.
    • Inspect the starter fuse for continuity and replace if blown.
Step 4: Starter Voltage Drop Test
  • Tools Required: Multimeter.
  • Instructions:
    • Set the multimeter to measure DC voltage.
    • Have a helper turn the key to the start position while you measure voltage at the starter terminal.
    • A healthy starter should receive at least 10 volts during cranking. If not, check for voltage drop in the wiring.
Step 5: Starter Motor Test
  • Tools Required: Multimeter, jumper cables.
  • Instructions:
    • Disconnect the starter from the battery and the ignition.
    • Using jumper cables, connect the positive terminal of the battery to the starter's positive terminal and the negative terminal to the starter's housing.
    • If the starter spins, it is functioning; if it doesn’t, the starter is likely faulty.
Repair Instructions
Replacing the Starter

Tools Required:

  • Socket set (including a ratchet and extensions)
  • Wrench set
  • Torque wrench
  • Safety glasses and gloves
  • Jack and jack stands (if necessary)

Step 1: Remove the Battery

  1. Disconnect the negative battery terminal first, followed by the positive terminal.
  2. Remove the battery if needed to access the starter easily.

Step 2: Remove the Starter

  1. Locate the starter (typically near the transmission bell housing).
  2. Disconnect the electrical connections from the starter (usually a main power cable and a smaller ignition wire).
  3. Remove the mounting bolts securing the starter to the engine block (typically 2-3 bolts).
  4. Carefully remove the starter from its location.

Step 3: Install the New Starter

  1. Position the new starter in place and secure it with the mounting bolts.
  2. Torque the bolts to the manufacturer's specifications (consult the service manual for the exact torque value).
  3. Reconnect the electrical connections to the new starter, ensuring they are tight and secure.

Step 4: Reconnect the Battery

  1. Reinstall the battery, connecting the positive terminal first and then the negative terminal.
  2. Ensure all connections are clean and secure.

Step 5: Test the Installation

  1. Attempt to start the vehicle to confirm that the new starter is functioning correctly.
  2. Monitor for any unusual noises or issues during startup.
Conclusion

If you follow these diagnostic and repair steps, you should be able to identify and replace a failing starter in your 2020 Toyota Highlander. Always ensure safety precautions are taken, and if you're unsure or uncomfortable with any steps, consult a professional technician.