how to fix my Tesla Model 3 Original (2017-2023) remote start not functioning

Tesla Model 3 Highland (2024-present)

Error Codes

1 hour

Time

medium

Difficulty

medium

Severity

3 min read

501 words

Problem Statement

Learn how to diagnose and fix the remote start issue in Tesla Model 3 (2017-2023). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in a safe location before attempting any repairs or checks.

Symptoms

•Remote start option not available in the mobile app
•Key fob not responding when attempting to start the vehicle
•Notifications or alerts in the app indicating a malfunction
•Vehicle does not respond to remote commands
•Other remote features (e.g., climate control) may also be unresponsive

Diagnostic Steps

1
Check the mobile app for any software updates or notifications regarding remote start.
2
Verify the key fob battery level and replace if necessary.
3
Inspect the vehicle's connectivity status to ensure it is connected to the internet and has a strong signal.
4
Review the vehicle settings to ensure remote start is enabled.
5
Perform a soft reboot of the vehicle's touchscreen by holding both scroll wheels on the steering wheel until the screen resets.
6
Check for any error messages or alerts on the vehicle's display.

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 flat-head screwdriver

Parts Required

•Key fob battery (CR2032)

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Diagnostic Steps

1
Check the mobile app for any software updates or notifications regarding remote start.
2
Verify the key fob battery level and replace if necessary.
3
Inspect the vehicle's connectivity status to ensure it is connected to the internet and has a strong signal.
4
Review the vehicle settings to ensure remote start is enabled.
5
Perform a soft reboot of the vehicle's touchscreen by holding both scroll wheels on the steering wheel until the screen resets.
6
Check for any error messages or alerts on the vehicle's display.

Solution

1. Preparation

Gather necessary tools: mobile app, vehicle owner's manual.
Ensure the vehicle is parked in a location with adequate cellular signal.

2. Check Mobile App Settings

Open the Tesla mobile app.
Navigate to 'Settings' and select 'Climate' to ensure remote start is enabled.
If disabled, toggle the option to enable remote start.

3. Key Fob Battery Replacement

Remove the back cover of the key fob using a small flat-head screwdriver.
Replace the old battery (CR2032) with a new one, ensuring the positive side is facing up.
Reassemble the key fob and test the remote start function.

4. Connectivity Check

Ensure the vehicle is in an area with good cellular reception.
If the vehicle is connected to Wi-Fi, switch to mobile data to check for improvement.
If connectivity issues persist, restart the vehicle's modem by powering off the vehicle and waiting for a few minutes before powering it back on.

5. Software Update

Check for any available software updates via the mobile app or vehicle touchscreen.
If an update is available, follow the prompts to install the latest software.