what should I do if my Tesla Model S Original (2012-2020) won’t start?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

532 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix starting issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always ensure the vehicle is in a safe location before performing any inspections or repairs.

Symptoms

•No response when pressing the brake pedal or start button
•Instrument cluster lights flashing or completely dark
•"Key not detected" message displayed
•Unresponsive touchscreen
•Clicking noise when attempting to start
•Reduced range or battery percentage displayed

Diagnostic Steps

1
Check the key fob battery and ensure it is functioning.
2
Verify that the 12V battery is charged by checking the voltage with a multimeter.
3
Inspect the main battery pack for any warning lights or error messages via the Tesla app.
4
Try resetting the vehicle by pressing and holding the two scroll wheels on the steering wheel until the screen resets.
5
Ensure that the vehicle is in "Park" mode.
6
Check for any updates or notifications in the Tesla app that may indicate service needs.

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

•OBD-II scanner
•Multimeter

Parts Required

•Key fob battery (CR2032)
•12V battery (if replacement is necessary)

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Diagnostic Steps

1
Check the key fob battery and ensure it is functioning.
2
Verify that the 12V battery is charged by checking the voltage with a multimeter.
3
Inspect the main battery pack for any warning lights or error messages via the Tesla app.
4
Try resetting the vehicle by pressing and holding the two scroll wheels on the steering wheel until the screen resets.
5
Ensure that the vehicle is in "Park" mode.
6
Check for any updates or notifications in the Tesla app that may indicate service needs.

Solution

1. Preparation

Tools Required: OBD-II scanner (if applicable), multimeter
Ensure the vehicle is in a safe, well-ventilated area.
Disconnect any power sources if necessary.

2. Check and Replace Key Fob Battery

Open the key fob and replace the battery with a new one (typically a CR2032).
Reassemble the fob and test its functionality near the vehicle.

3. Inspect and Charge 12V Battery

Tools Required: Multimeter
Measure the voltage of the 12V battery; it should be above 12.4V.
If the battery is low, connect a compatible charger and charge for at least 30 minutes.
If the battery is dead, replace it with a new 12V battery.

4. Reset the Vehicle

Sit in the driver's seat and press and hold both scroll wheels on the steering wheel.
Keep holding until the touchscreen powers off and reboots.
Wait for the system to restart and check functionality.

5. Check for Main Battery Issues

If the vehicle still does not start, use the Tesla app to check the battery status.
If the battery is showing a low charge, connect to a Tesla Supercharger and allow it to charge for a period of time.
Verify if there are any alerts for service needed.

6. Seek Professional Assistance

If all previous steps fail, contact Tesla service for further diagnostics and potential repairs.