how to fix the cruise control not working in my Toyota Highlander Third Generation (2014-2019)?

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

584 words

Problem Statement

Learn how to diagnose and fix cruise control issues in Toyota Highlander (2014-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shorts.
•Ensure the vehicle is securely parked to prevent movement during repairs.

Symptoms

•Cruise control indicator light not illuminating
•Inability to set or maintain speed with the cruise control
•Cruise control disengaging unexpectedly
•Unresponsive cruise control buttons on the steering wheel
•Malfunction Indicator Light (MIL) illuminated on the dashboard

Diagnostic Steps

1
Inspect the cruise control fuse for continuity and replace if necessary.
2
Scan the vehicle's onboard diagnostics (OBD-II) for any error codes related to the cruise control system.
3
Check the brake pedal switch operation to ensure it is functioning properly.
4
Verify the operation of the cruise control stalk or steering wheel switch for any faults.
5
Inspect the throttle position sensor and accelerator pedal position sensor for proper function.
6
Examine the wiring and connectors associated with the cruise control system for damage or corrosion.

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
•Screwdriver set
•Fuse puller
•Torque wrench

Parts Required

•Replacement cruise control fuse
•Brake pedal switch (if necessary)
•Cruise control switch (if necessary)
•Throttle position sensor (if necessary)

Related Faults

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Diagnostic Steps

1
Inspect the cruise control fuse for continuity and replace if necessary.
2
Scan the vehicle's onboard diagnostics (OBD-II) for any error codes related to the cruise control system.
3
Check the brake pedal switch operation to ensure it is functioning properly.
4
Verify the operation of the cruise control stalk or steering wheel switch for any faults.
5
Inspect the throttle position sensor and accelerator pedal position sensor for proper function.
6
Examine the wiring and connectors associated with the cruise control system for damage or corrosion.

Solution

1. Preparation

Gather tools and parts necessary for the repair.
Ensure the vehicle is parked on a flat surface and the ignition is off.
Disconnect the battery to prevent any electrical shorts during the repair.

2. Replace Fuse

Locate the fuse box, typically found under the dashboard or in the engine bay.
Identify the cruise control fuse using the diagram on the fuse box cover.
Remove the fuse with a fuse puller and inspect it for damage.
Replace with the same amperage fuse if blown.

3. Brake Pedal Switch Adjustment

Locate the brake pedal switch beneath the dashboard.
Inspect for proper alignment and function; it should be activated when the pedal is pressed.
If misaligned, adjust the switch or replace it if it is defective.

4. Inspect and Replace Cruise Control Switch

Remove the steering wheel cover to access the cruise control switch.
Disconnect the wiring harness from the switch.
Test the switch with a multimeter for continuity; replace it if defective.
Reinstall the new switch and reassemble the steering wheel cover.

5. Test Throttle Position Sensor

Use a multimeter to test the throttle position sensor at the connector.
Check for proper voltage readings as specified in the service manual.
Replace the sensor if readings are outside the normal range.

6. Reconnect Battery and Final Checks

Reconnect the battery terminals.
Start the vehicle and check for any warning lights.
Test the cruise control system to ensure it is functioning correctly.