how to troubleshoot the remote start feature not working on my Toyota Highlander XU70 (2020-Present)...

Toyota Highlander XU70 (2020-Present)

Error Codes

0.5-1 hour

Time

medium

Difficulty

medium

Severity

3 min read

516 words

Problem Statement

Troubleshoot and fix the remote start issue on your 2020-Present Toyota Highlander XU70. Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

0.5-1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in a safe environment when testing remote start to avoid accidental startup in an enclosed space.

Symptoms

•Remote start button on the key fob does not respond
•No response from the vehicle when attempting to start remotely
•Check engine light illuminated (if applicable)
•Vehicle starts normally with the key
•Range limitations experienced with the key fob
•Other key fob functions (lock/unlock) may work

Diagnostic Steps

1
Check the key fob battery to ensure it has sufficient power.
2
Verify if the vehicle is within the operational range for remote start.
3
Inspect for any warning lights or messages on the dashboard.
4
Confirm that the vehicle's doors are closed and the hood is shut securely.
5
Use an OBD-II scanner to check for any DTCs (Diagnostic Trouble Codes) that might affect remote start functionality.
6
Review the settings in the vehicle's infotainment system to ensure remote start is enabled.

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

•Flathead screwdriver
•OBD-II scanner (optional for diagnostics)

Parts Required

•CR2032 battery (if needed for key fob)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•Remote start button on the key fob does not respond

•No response from the vehicle when attempting to start remotely

•Check engine light illuminated (if applicable)

•Vehicle starts normally with the key

•Range limitations experienced with the key fob

•Other key fob functions (lock/unlock) may work

Diagnostic Steps

1
Check the key fob battery to ensure it has sufficient power.
2
Verify if the vehicle is within the operational range for remote start.
3
Inspect for any warning lights or messages on the dashboard.
4
Confirm that the vehicle's doors are closed and the hood is shut securely.
5
Use an OBD-II scanner to check for any DTCs (Diagnostic Trouble Codes) that might affect remote start functionality.
6
Review the settings in the vehicle's infotainment system to ensure remote start is enabled.

Solution

1. Key Fob Battery Replacement

Tools Required: Flathead screwdriver, CR2032 battery
Instructions:
1. Use the flathead screwdriver to gently pry open the key fob casing.
2. Remove the old CR2032 battery from the fob.
3. Insert the new battery, ensuring the positive side is facing up.
4. Reassemble the key fob and test the remote start function.

2. Check Vehicle Settings

Instructions:
1. Start the vehicle using the key.
2. Navigate to the vehicle settings menu on the infotainment system.
3. Select the “Remote Start” option and confirm it is enabled.
4. Save any changes and turn off the vehicle to test the remote start.

3. Inspect for Physical Interference

Instructions:
1. Ensure all doors, the trunk, and hood are secure and closed.
2. Check for any obstructions (e.g., snow, ice) that might prevent the vehicle from detecting closed doors.

4. Reset Key Fob

Instructions:
1. Locate the vehicle’s manual and follow the key fob programming instructions.
2. After resetting, test the remote start function again.

5. Consult Dealer for Software Update

Instructions:
1. If the issue persists, schedule a visit with a Toyota dealer.
2. Request a diagnostic check and potential software updates that may be required for remote start functionality.