how to troubleshoot the remote start not working on Tesla Model 3 Original (2017-2023)?

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

545 words

Problem Statement

Learn how to troubleshoot and fix the remote start issue on Tesla Model 3 (2017-2023). Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in a safe location while troubleshooting to prevent accidental movement.
•Always handle batteries with care and dispose of used batteries properly.

Symptoms

•Remote start feature does not activate when commanded via mobile app
•Unable to start message displayed on the app
•Vehicle does not respond to key fob or mobile app commands
•Other functions of the mobile app (lock/unlock) work correctly
•No notifications or alerts indicating an issue with the vehicle

Diagnostic Steps

1
Ensure the mobile app is updated to the latest version available.
2
Check the vehicle's connection to Wi-Fi and cellular networks.
3
Verify that the remote start feature is enabled in the vehicle settings.
4
Confirm that the vehicle's battery is charged and has sufficient power.
5
Inspect the key fob for battery level and functionality; replace if necessary.
6
Restart the mobile app and attempt to reconnect to the vehicle.

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

•Mobile device with Tesla app
•Small screwdriver

Parts Required

•CR2032 battery

Related Faults

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Symptoms

•Remote start feature does not activate when commanded via mobile app

•Unable to start message displayed on the app

•Vehicle does not respond to key fob or mobile app commands

•Other functions of the mobile app (lock/unlock) work correctly

•No notifications or alerts indicating an issue with the vehicle

Diagnostic Steps

1
Ensure the mobile app is updated to the latest version available.
2
Check the vehicle's connection to Wi-Fi and cellular networks.
3
Verify that the remote start feature is enabled in the vehicle settings.
4
Confirm that the vehicle's battery is charged and has sufficient power.
5
Inspect the key fob for battery level and functionality; replace if necessary.
6
Restart the mobile app and attempt to reconnect to the vehicle.

Solution

1. Preparation

Gather necessary tools: mobile device with the Tesla app, access to the vehicle.
Ensure the vehicle is parked securely and in a well-ventilated area.

2. Update Mobile App

Go to your mobile device's app store.
Search for the Tesla app and check if an update is available.
Install any available updates and restart the app.

3. Verify Vehicle Settings

Enter the vehicle and access the main touchscreen.
Select "Controls" > "Settings" > "Security & Safety."
Scroll to locate the remote start feature and ensure it is enabled.

4. Check Battery and Power

Inspect the vehicle's main battery charge level displayed on the touchscreen.
If necessary, charge the vehicle using an appropriate charger until it reaches a sufficient level.

5. Inspect Key Fob

Remove the key fob from any protective case.
Test the key fob by pressing the buttons; if it doesn’t respond, replace the battery.
- To replace the battery:
  1. Use a small screwdriver to open the key fob casing.
  2. Replace with a new CR2032 battery, ensuring correct polarity.
  3. Reassemble the key fob.

6. Reconnect Mobile App

Close the Tesla app completely.
Restart your mobile device to ensure a fresh connection.
Open the app and log back in to the Tesla account.
Attempt to use the remote start feature again.