my Tesla Model 3 Original (2017-2023) won't respond to remote start, what could be wrong?

Tesla Model 3 Highland (2024-present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

497 words

Problem Statement

Learn how to diagnose and fix remote start issues in Tesla Model 3 (2017-2023). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in 'Park' before performing any tasks involving the infotainment system.

Symptoms

•Remote start feature fails to activate
•Mobile app shows 'vehicle unavailable' or similar error
•Unable to unlock doors remotely
•Notifications of low battery in the key fob or mobile app
•No alerts or error messages in the vehicle's dashboard

Diagnostic Steps

1
Verify the vehicle's connectivity status by checking the mobile app for connectivity.
2
Check the key fob battery and replace if necessary.
3
Inspect the vehicle's settings to ensure remote start is enabled.
4
Restart the vehicle's infotainment system by holding down the two scroll wheels on the steering wheel.
5
Check for software updates in the vehicle's settings menu and apply any available updates.
6
Inspect the mobile device for app updates or reinstall the Tesla app if issues persist.

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

•Small flathead screwdriver

Parts Required

•CR2032 key fob battery

Related Faults

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Diagnostic Steps

1
Verify the vehicle's connectivity status by checking the mobile app for connectivity.
2
Check the key fob battery and replace if necessary.
3
Inspect the vehicle's settings to ensure remote start is enabled.
4
Restart the vehicle's infotainment system by holding down the two scroll wheels on the steering wheel.
5
Check for software updates in the vehicle's settings menu and apply any available updates.
6
Inspect the mobile device for app updates or reinstall the Tesla app if issues persist.

Solution

1. Battery Replacement

Step 1: Remove the key fob from your pocket.
- Tools Required: Small flathead screwdriver.
Step 2: Open the key fob by carefully prying it open with the screwdriver.
Step 3: Remove the old battery and insert a new CR2032 battery, ensuring the positive side faces up.
Step 4: Snap the key fob back together securely.

2. Infotainment System Restart

Step 1: Sit in the driver's seat and ensure the vehicle is in 'Park'.
Step 2: Press and hold the two scroll wheels located on the steering wheel until the screen turns black and the Tesla logo appears.
Step 3: Wait for the system to reboot, which may take a minute.

3. Check and Enable Remote Start Settings

Step 1: From the vehicle's main screen, tap on 'Controls'.
Step 2: Navigate to 'Safety & Security' settings.
Step 3: Ensure the 'Remote Start' option is toggled on.

4. Software Update

Step 1: Access the vehicle's 'Software' menu from the main screen.
Step 2: Check for any available software updates.
Step 3: If an update is available, connect the vehicle to Wi-Fi and initiate the update process.