How do I fix a malfunctioning cruise control in a 2022 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

618 words

Problem Statement

Learn how to diagnose and repair a malfunctioning cruise control system in a 2022 Toyota Highlander with step-by-step instructions and required tools.

Affected Component

Cruise Control System

Estimated Time

2-4 hours

Symptoms

•Cruise control does not engage when activated.
•Cruise control engages but is unresponsive to speed adjustments.
•Cruise control disengages unexpectedly.
•Dashboard warning lights may illuminate.

Diagnostic Steps

1
Check the cruise control switch on the steering wheel for any visible damage.
2
Inspect the brake pedal switch to ensure it is not stuck or malfunctioning.
3
Look for any blown fuses related to the cruise control system.
4
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the cruise control system.
5
Verify that the cruise control system is receiving power.
6
Ensure the brake pedal switch is functioning correctly.
7
Check the TPS for proper function using a multimeter.
8
Test the VSS to ensure it is providing the correct speed input.

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
•Screwdrivers (Phillips and flathead)
•Socket set
•Torx bits
•Diagnostic repair manual specific to the 2022 Toyota Highlander

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Diagnostic Steps

1
Check the cruise control switch on the steering wheel for any visible damage.
2
Inspect the brake pedal switch to ensure it is not stuck or malfunctioning.
3
Look for any blown fuses related to the cruise control system.
4
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the cruise control system.
5
Verify that the cruise control system is receiving power.
6
Ensure the brake pedal switch is functioning correctly.
7
Check the TPS for proper function using a multimeter.
8
Test the VSS to ensure it is providing the correct speed input.

Solution

Fixing a Malfunctioning Cruise Control in a 2022 Toyota Highlander

Tools Required

OBD-II scanner
Multimeter
Screwdrivers (Phillips and flathead)
Socket set
Torx bits
Diagnostic repair manual specific to the 2022 Toyota Highlander

Repair Instructions

Replace Blown Fuses
- Locate the fuse box (usually under the dashboard or in the engine compartment).
- Identify and replace any blown fuses related to the cruise control system.
Adjust or Replace Brake Pedal Switch
- If the brake pedal switch is misaligned, adjust it to ensure it makes proper contact.
- If defective, replace the brake pedal switch by removing the retaining clip and disconnecting the electrical connector.
Repair or Replace the Cruise Control Switch
- If the cruise control switch is faulty, you will need to replace it.
- Remove the airbag (follow safety procedures) using a Torx bit and disconnect the battery before starting.
- Remove the steering wheel cover to access the cruise control switch.
- Disconnect the wiring harness and replace the switch.
Replace the Throttle Position Sensor (if necessary)
- Disconnect the battery.
- Remove the throttle body from the intake manifold to access the TPS.
- Disconnect the wiring harness and remove the TPS mounting screws.
- Install the new TPS and reassemble the throttle body.
Replace the Vehicle Speed Sensor (if necessary)
- Locate the VSS, typically located on the transmission.
- Disconnect the wiring harness and remove the mounting bolt.
- Pull the sensor out and install the new one.
- Reconnect the wiring and secure the mounting bolt.
Test the Cruise Control
- Reconnect the battery and start the vehicle.
- Test the cruise control system by engaging it at highway speeds and ensuring all functions work properly.
Clear Diagnostic Codes
- If you used an OBD-II scanner, clear any codes and recheck to ensure no new codes appear.

Conclusion

If after these steps the cruise control still malfunctions, the issue may be more complex, potentially involving the cruise control module or other internal components. At this point, consulting a professional technician or visiting a Toyota dealership for further diagnosis is recommended.