Toyota Highlander Third Generation (2014-2019) traction control light on how to reset

Toyota Highlander Third Generation (2014-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

524 words

Problem Statement

Learn how to reset the traction control light on your 2014-2019 Toyota Highlander. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 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 rolling while working on it.

Symptoms

•Traction control light illuminated on the dashboard
•Vehicle having difficulty maintaining traction on slippery surfaces
•Possible decrease in engine power during acceleration
•Unusual noises or vibrations during traction control activation
•Check engine light may also be illuminated

Diagnostic Steps

1
Scan the vehicle's computer system using an OBD-II scanner to check for any error codes.
2
Inspect the wheel speed sensors for any damage or disconnection.
3
Check the brake fluid level and ensure it is within the recommended range.
4
Look for any blown fuses related to the traction control system.
5
Verify that the vehicle's tires are properly inflated and in good condition.

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
•Socket set
•Multimeter

Parts Required

•Wheel speed sensor (if damaged)
•Brake fluid (if needed)
•Fuses (if blown)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's computer system using an OBD-II scanner to check for any error codes.
2
Inspect the wheel speed sensors for any damage or disconnection.
3
Check the brake fluid level and ensure it is within the recommended range.
4
Look for any blown fuses related to the traction control system.
5
Verify that the vehicle's tires are properly inflated and in good condition.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface.
Turn off the ignition and disconnect the battery (negative terminal) for safety.
Gather necessary tools: OBD-II scanner, socket set, and multimeter.

2. Clear Error Codes

Reconnect the battery and turn the ignition to the "ON" position without starting the engine.
Connect the OBD-II scanner and follow the prompts to read and clear the error codes.
Note any persistent codes for further investigation if the traction control light remains on.

3. Inspect and Repair Components

Check Wheel Speed Sensors:
- Locate the wheel speed sensors at each wheel hub.
- Inspect the wiring and connectors for damage; repair or replace as needed.
Brake Fluid Level:
- Open the hood and locate the brake fluid reservoir.
- Check the fluid level; if low, top it off with the recommended brake fluid type (DOT 3 or DOT 4).
Fuses:
- Access the fuse box, usually located under the dashboard or hood.
- Identify the fuse for the traction control system and check if it's blown; replace if necessary.

4. Final Reset Procedure

After repairs, turn the ignition to the "ON" position again without starting the engine.
Press the brake pedal three times within five seconds.
Start the engine and let it idle for a few minutes.
Test drive the vehicle to ensure the traction control light remains off.