my Tesla Model S Original (2012-2020) remote start not working what's wrong

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

477 words

Problem Statement

Learn how to diagnose and fix remote start issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, 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 'Park' and turned off before performing any inspections or repairs.

Symptoms

•Remote start button does not respond when pressed
•No notifications or alerts on the vehicle's app
•Vehicle does not power on or show any signs of activation
•Possible 'Key Not Detected' warning on the dashboard
•Difficulty unlocking or locking the doors with the remote

Diagnostic Steps

1
Check the Tesla mobile app for any notifications or updates regarding the vehicle.
2
Ensure the key fob battery is charged by testing the key fob's functionality.
3
Verify that the vehicle's software is updated to the latest version.
4
Inspect the vehicle's 12V battery voltage and health status.
5
Test the remote start feature using an alternate method, such as through the Tesla app.
6
Review the vehicle’s settings 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

•Smartphone with Tesla app
•Multimeter
•Small flathead screwdriver

Parts Required

•Key fob battery (CR2032)
•12V battery (if required)

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Diagnostic Steps

1
Check the Tesla mobile app for any notifications or updates regarding the vehicle.
2
Ensure the key fob battery is charged by testing the key fob's functionality.
3
Verify that the vehicle's software is updated to the latest version.
4
Inspect the vehicle's 12V battery voltage and health status.
5
Test the remote start feature using an alternate method, such as through the Tesla app.
6
Review the vehicle’s settings to ensure remote start is enabled.

Solution

1. Preparation

Gather necessary tools: smartphone with the Tesla app, multimeter, and replacement key fob battery.
Ensure the vehicle is parked in a safe location with enough space for diagnostics.

2. Check Key Fob Battery

Sub-steps:
1. Open the key fob casing using a small flathead screwdriver.
2. Remove the old battery (typically a CR2032) and replace it with a new one, ensuring correct polarity.
3. Reassemble the key fob and test the remote start function.

3. Update Vehicle Software

Sub-steps:
1. Connect the vehicle to Wi-Fi if not already connected.
2. Navigate to 'Software' in the vehicle's settings menu.
3. Check for updates and install any available software updates, following on-screen prompts.

4. Inspect 12V Battery

Sub-steps:
1. Open the front trunk (frunk) to access the 12V battery.
2. Use a multimeter to check the voltage; it should be around 12.6V or higher.
3. If the voltage is low, consider replacing the 12V battery.

5. Enable Remote Start Feature

Sub-steps:
1. Open the vehicle’s settings on the touchscreen.
2. Navigate to 'Safety & Security'.
3. Ensure the 'Remote Start' feature is turned on.