FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
What are the common issues with the Toyota Highlander’s sound system from 2020? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/What are the common issues with the Toyota Highlander’s sound system from 2020?

What are the common issues with the Toyota Highlander’s sound system from 2020?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Explore common sound system issues in the 2020 Toyota Highlander, including symptoms, diagnostic steps, and repair instructions.

Affected Component
sound system

Symptoms

  • •No Sound from Speakers
  • •Intermittent Sound
  • •Bluetooth Connectivity Issues
  • •Poor Sound Quality
  • •Display Issues on Touchscreen

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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

  • •OBD-II Scanner
  • •Multimeter
  • •Basic hand tools
  • •Torque wrench
  • •Soft cloth
  • •Phone or Bluetooth-enabled device

Additional Information

Affected Component
sound system
Difficulty
medium
Severity
medium
Tools Required
6 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Common Issues with the 2020 Toyota Highlander Sound System

The sound system in the 2020 Toyota Highlander can experience various issues, which can affect audio quality and functionality. Below are some common symptoms, diagnostic steps, tools required, and potential repair instructions for these sound system problems.

Common Symptoms
  1. No Sound from Speakers
    • Symptoms: No audio output when the radio or media is playing.
  2. Intermittent Sound
    • Symptoms: Audio cuts in and out, or has static.
  3. Bluetooth Connectivity Issues
    • Symptoms: Difficulty connecting or maintaining a connection with Bluetooth devices.
  4. Poor Sound Quality
    • Symptoms: Distorted audio, loss of bass, or rattling sounds from speakers.
  5. Display Issues on Touchscreen
    • Symptoms: Unresponsive touchscreen, glitches, or failure to display audio information.
Tools Required
  • OBD-II Scanner
  • Multimeter (for electrical testing)
  • Basic hand tools (screwdrivers, pliers)
  • Torque wrench (if removing components)
  • Soft cloth (for cleaning)
  • Phone or Bluetooth-enabled device (for testing connectivity)
Repair Instructions

1. No Sound from Speakers

  • Step 1: Check the audio settings (volume, balance, etc.).
  • Step 2: Inspect the speaker connections and wiring for any loose or damaged wires.
  • Step 3: If connections are intact, check the head unit by:
    • Removing the head unit (follow the vehicle manual).
    • Checking for loose connectors at the back.
    • Testing the head unit with a multimeter.
  • Step 4: If the head unit is functional but still no sound, test individual speakers for continuity with a multimeter.

2. Intermittent Sound

  • Step 1: Inspect all speaker connections and wiring for wear or damage.
  • Step 2: Confirm the audio source (e.g., USB, Bluetooth) is functioning correctly.
  • Step 3: If the problem persists, replace any faulty speakers or wiring.

3. Bluetooth Connectivity Issues

  • Step 1: Delete the existing Bluetooth connection from both the vehicle and the device.
  • Step 2: Restart the Bluetooth on both devices.
  • Step 3: Attempt to reconnect, ensuring that the vehicle is in pairing mode.
  • Step 4: If issues persist, consider updating the vehicle’s firmware through Toyota’s website or contacting the dealer.

4. Poor Sound Quality

  • Step 1: Adjust the equalizer settings to ensure they are set correctly.
  • Step 2: Inspect speakers for damage or debris. Clean or replace as necessary.
  • Step 3: If distortion is present, check amplifier settings if equipped.
  • Step 4: Replace any damaged speakers.

5. Display Issues on Touchscreen

  • Step 1: Perform a soft reset of the infotainment system.
  • Step 2: If the problem persists, check for software updates through the Toyota website.
  • Step 3: If updates do not resolve the issue, consider a factory reset of the infotainment system (refer to the owner's manual).
  • Step 4: If the display remains unresponsive, the head unit may require replacement.
Conclusion

If the sound system issues persist after following these steps, it may be necessary to consult a qualified automotive technician or visit a Toyota dealership for further diagnosis and repair, especially if warranty coverage is applicable.