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

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

615 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

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shock.
•Allow the car to cool before working on the engine or transmission components.

Symptoms

•Cruise control indicator light not illuminating
•Inability to set or activate cruise control
•Erratic speed fluctuations while attempting to use cruise control
•Check engine light illuminated (potentially related)
•Unresponsive cruise control buttons on the steering wheel

Diagnostic Steps

1
Check for stored trouble codes using an OBD-II scanner to identify any relevant issues.
2
Inspect the cruise control switch on the steering wheel for any visual damage or malfunction.
3
Verify the operation of the brake pedal switch; ensure it is not stuck or malfunctioning.
4
Inspect the vehicle's speed sensor for proper operation and connectivity.
5
Check the vehicle's fuses related to the cruise control system for any blown fuses.
6
Examine the wiring and connectors between the cruise control module and the steering wheel for any signs of wear or damage.

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
•Screwdriver set
•Socket set
•Trim removal tools
•Multimeter
•Torque wrench
•Fuse puller or pliers

Parts Required

•Cruise control switch
•Brake pedal switch
•Vehicle speed sensor
•Fuses (if blown)

Related Faults

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Diagnostic Steps

1
Check for stored trouble codes using an OBD-II scanner to identify any relevant issues.
2
Inspect the cruise control switch on the steering wheel for any visual damage or malfunction.
3
Verify the operation of the brake pedal switch; ensure it is not stuck or malfunctioning.
4
Inspect the vehicle's speed sensor for proper operation and connectivity.
5
Check the vehicle's fuses related to the cruise control system for any blown fuses.
6
Examine the wiring and connectors between the cruise control module and the steering wheel for any signs of wear or damage.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is turned off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Cruise Control Switch

Tools Required: Screwdriver set, socket set, trim removal tools.
Remove the airbag and steering wheel cover to access the cruise control switch.
- Remove screws or clips securing the airbag cover.
- Disconnect the airbag connector and remove the airbag.
Unscrew and detach the cruise control switch.
Replace the defective cruise control switch with a new part.
Reassemble the steering wheel and airbag cover securely.

3. Check and Replace Brake Pedal Switch

Tools Required: Socket set, multimeter.
Locate the brake pedal switch under the dashboard.
Disconnect the brake pedal switch connector.
Use a multimeter to test the switch for continuity; if defective, replace it.
Reconnect the brake pedal switch and ensure proper adjustment.

4. Inspect and Replace Speed Sensor

Tools Required: Socket set, torque wrench.
Locate the vehicle speed sensor, usually near the transmission or differential.
Disconnect the electrical connector and remove the sensor.
Inspect the sensor for damage; if malfunctioning, replace with a new sensor.
Reinstall the new sensor, ensuring it is torqued to the manufacturer's specifications.

5. Check Fuses

Tools Required: Fuse puller or pliers.
Locate the fuse box (typically under the dashboard or in the engine compartment).
Identify the cruise control fuse and inspect it for continuity.
Replace any blown fuses with the same amperage rating.