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How can I resolve issues with the Highlander’s steering wheel controls? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How can I resolve issues with the Highlander’s steering wheel controls?

How can I resolve issues with the Highlander’s steering wheel controls?

Toyota Highlander Fourth Generation (2020-present)

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

Problem Statement

Learn how to diagnose and fix issues with the steering wheel controls on the 2020-present Toyota Highlander with detailed steps and required tools.

Affected Component
steering wheel controls
Estimated Time
2-4 hours

Symptoms

  • •Non-responsive audio controls (volume, track, phone)
  • •Cruise control not activating or deactivating
  • •Lack of response from steering wheel buttons
  • •Warning lights related to steering or electronics on the dashboard

Diagnostic Steps

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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
  • •Fuse Puller/Needle Nose Pliers
  • •Multimeter
  • •Screwdrivers
  • •Pliers
  • •Diagnostic Software (Toyota Techstream or similar)
  • •Torx Driver Set
  • •Ratchet and Socket Set
  • •Wire Connectors

Additional Information

Affected Component
steering wheel controls
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
9 items

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Back to Generation

Certainly! If you are experiencing issues with the steering wheel controls on a 2020-present Toyota Highlander (Fourth Generation, XU70), it's essential to diagnose the problem systematically. Below are detailed steps to help you troubleshoot and resolve the issue.

Step 1: Initial Inspection
  • Check for Obvious Issues: Look for any visible damage to the steering wheel controls.
  • Battery Voltage: Ensure the vehicle battery is fully charged. Low battery voltage can affect electronic controls.
Step 2: Check for Trouble Codes
  • Tools Required: OBD-II Scanner
  • Procedure:
    1. Connect the OBD-II scanner to the vehicle’s OBD-II port (usually located under the dashboard).
    2. Turn the ignition to the "ON" position without starting the engine.
    3. Run a diagnostic scan and check for any trouble codes related to the steering wheel controls or the body control module (BCM).
    4. Record any trouble codes for further investigation.
Step 3: Inspect Fuses
  • Tools Required: Fuse Puller/Needle Nose Pliers
  • Procedure:
    1. Locate the fuse box (typically found under the dashboard or in the engine compartment).
    2. Refer to the owner’s manual for the fuse diagram to identify the fuses related to the steering wheel controls.
    3. Inspect the relevant fuses for continuity. Replace any blown fuses.
Step 4: Check Wiring and Connectors
  • Tools Required: Multimeter, Screwdrivers, and Pliers
  • Procedure:
    1. Remove the airbag/steering wheel cover (ensure you disconnect the battery and wait 10 minutes before doing this).
    2. Inspect the wiring harness and connectors behind the steering wheel for any damage, corrosion, or loose connections.
    3. Use a multimeter to test for continuity in the wires. Repair or replace any damaged wires or connectors.
Step 5: Test the Steering Wheel Controls
  • Procedure:
    1. With everything reconnected, reconnect the battery.
    2. Start the vehicle and check the functionality of the steering wheel controls.
    3. If the controls are still not working, proceed to the next step.
Step 6: Check the Steering Angle Sensor
  • Tools Required: OBD-II Scanner
  • Procedure:
    1. Use the OBD-II scanner to check for any error codes related to the steering angle sensor.
    2. If there are codes present, follow the manufacturer's guidelines for recalibration or replacement.
Step 7: Software Update
  • Tools Required: Diagnostic Software (Toyota Techstream or similar)
  • Procedure:
    1. If no hardware issues are found, check if the vehicle requires a software update.
    2. Connect the vehicle to the diagnostic software and look for available updates.
    3. Follow the on-screen instructions to apply any necessary updates.
Repair Instructions
Replacing the Steering Wheel Control Module

If the controls are still not working after all diagnostics and checks, you may need to replace the steering wheel control module.

  1. Tools Required: Torx Driver Set, Ratchet and Socket Set, Wire Connectors
  2. Procedure:
    • Disconnect the negative battery terminal.
    • Remove the airbag module (follow safety precautions).
    • Unplug the wiring harness connected to the steering wheel control module.
    • Remove the steering wheel (using the appropriate Torx driver to unscrew).
    • Replace the faulty steering wheel control module with a new one.
    • Reassemble the steering wheel and airbag module carefully.
    • Reconnect the battery terminal and test the steering wheel controls.
Conclusion

If none of the above steps resolve the issue, it may be necessary to consult with a Toyota dealership or a certified automotive technician for further diagnosis. Complex issues may involve deeper electronic malfunctions that require specialized tools and expertise. Always ensure safety precautions are followed, especially when working with airbag systems.