how to fix the cruise control not working on my 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

607 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.
•Allow the vehicle to cool before inspecting the engine components.

Symptoms

•Cruise control indicator light not illuminated
•Inability to set or maintain speed while driving
•Unresponsive cruise control buttons on the steering wheel
•Engine speed fluctuations while cruise control is engaged
•Check engine light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults.
2
Inspect the cruise control switch on the steering wheel for damage or malfunction.
3
Check the brake pedal position switch to ensure it is functioning correctly.
4
Verify the cruise control module's connections and wiring for any signs of wear or damage.
5
Test the vehicle speed sensor for proper operation using a multimeter or scan tool.
6
Check the fuses related to the cruise control system for any blown fuses.

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
•Socket set
•Screwdriver set
•Electrical contact cleaner

Parts Required

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

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults.
2
Inspect the cruise control switch on the steering wheel for damage or malfunction.
3
Check the brake pedal position switch to ensure it is functioning correctly.
4
Verify the cruise control module's connections and wiring for any signs of wear or damage.
5
Test the vehicle speed sensor for proper operation using a multimeter or scan tool.
6
Check the fuses related to the cruise control system for any blown fuses.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shock.
Ensure the vehicle is on a level surface and safely parked.

2. Inspect and Replace the Cruise Control Switch

Remove the airbag module from the steering wheel using a socket set.
Disconnect the wiring harness from the cruise control switch.
Inspect the switch for physical damage or corrosion.
If damaged, replace with a new cruise control switch.
Reconnect the wiring harness and reassemble the airbag module.

3. Check Brake Pedal Position Switch

Locate the brake pedal position switch above the brake pedal.
Disconnect the electrical connector from the switch.
Test the switch with a multimeter; it should show continuity when the pedal is pressed.
If faulty, replace the brake pedal position switch.

4. Inspect the Cruise Control Module

Locate the cruise control module (typically under the dashboard).
Disconnect the electrical connectors and inspect for corrosion or damage.
Clean any corrosion with electrical contact cleaner.
Reconnect the connectors securely.

5. Verify Vehicle Speed Sensor

Locate the vehicle speed sensor (usually on the transmission).
Disconnect the sensor and use a multimeter to check the resistance.
If readings are outside manufacturer specifications, replace the speed sensor.

6. Check and Replace Fuses

Locate the fuse box, usually found under the dashboard or in the engine compartment.
Identify the fuses related to the cruise control system as per the owner’s manual.
Replace any blown fuses with the same amperage rating.