how to troubleshoot Tesla Model S Original (2012-2020) not starting

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

547 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 troubleshoot and fix a no-start condition in Tesla Model S (2012-2020). 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

•Disconnect the 12V battery before working on the electrical systems to avoid shocks or shorts.

Symptoms

•No response when the brake pedal is pressed
•Key fob not detected or functioning
•Dashboard lights not illuminating
•"Powering Up" message stuck on the screen
•No sounds from the vehicle at all
•Possible faults indicated in the Tesla app or vehicle display

Diagnostic Steps

1
Check the key fob battery and replace if necessary.
2
Inspect the 12V battery voltage using a multimeter; it should be above 12.5V.
3
Look for any warning messages on the touchscreen or in the Tesla app.
4
Verify that the vehicle is in Park and the brake pedal is fully depressed.
5
Attempt a reset by holding down the two scroll wheels on the steering wheel until the touchscreen reboots.
6
Check the main battery state of charge through the Tesla app or vehicle 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

•Multimeter
•Replacement key fob battery
•Flathead screwdriver
•Portable jump starter

Parts Required

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

Related Faults

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Diagnostic Steps

1
Check the key fob battery and replace if necessary.
2
Inspect the 12V battery voltage using a multimeter; it should be above 12.5V.
3
Look for any warning messages on the touchscreen or in the Tesla app.
4
Verify that the vehicle is in Park and the brake pedal is fully depressed.
5
Attempt a reset by holding down the two scroll wheels on the steering wheel until the touchscreen reboots.
6
Check the main battery state of charge through the Tesla app or vehicle display.

Solution

1. Preparation

Tools Required: Multimeter, replacement key fob battery, flathead screwdriver.
Ensure the vehicle is in a safe location and the parking brake is engaged.

2. Inspect and Replace the Key Fob Battery

Using a flathead screwdriver, carefully pry open the key fob.
Replace the old battery with a new CR2032 battery, ensuring the orientation is correct.
Reassemble the key fob and test its functionality.

3. Check and Charge the 12V Battery

Open the front trunk and locate the 12V battery.
Connect a multimeter to the battery terminals to measure voltage.
If the voltage is below 12.5V, jump-start the vehicle using a portable jump starter or connect to a charger.
Allow it to charge for approximately 30 minutes before attempting to start again.

4. Reset the Vehicle

While seated in the driver’s seat, hold down the two scroll wheels on the steering wheel.
Keep holding until the touchscreen goes black and the Tesla logo appears.
Release the scroll wheels and wait for the system to reboot.

5. Verify Main Battery State

Check the main battery state of charge through the Tesla app or vehicle display.
If the charge is very low, connect the vehicle to a charger for an extended period (several hours) and attempt to start again.