my Tesla Model S Original (2012-2020) won't start just clicks what should I do

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

492 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 the no-start issue in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical systems.
•Ensure the vehicle is in 'Park' and the parking brake is engaged during repairs.

Symptoms

•Single or multiple clicking sounds when the start button is pressed
•Dashboard lights and accessories may power on
•No movement of the electric motor
•Potential error messages on the display (e.g., low battery)
•Reduced range indicated on the battery gauge

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to ensure it's above 12.4 volts.
2
Inspect the vehicle's 12V battery connections for corrosion or looseness.
3
Confirm that the high-voltage battery is adequately charged via the vehicle's display.
4
Use the Tesla app or onboard diagnostics to check for error codes.
5
Verify that the power switch is functioning correctly by resetting it (hold the brake pedal and press the start button).

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
•Socket set
•Torque wrench
•Battery charger

Parts Required

•12V battery

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Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to ensure it's above 12.4 volts.
2
Inspect the vehicle's 12V battery connections for corrosion or looseness.
3
Confirm that the high-voltage battery is adequately charged via the vehicle's display.
4
Use the Tesla app or onboard diagnostics to check for error codes.
5
Verify that the power switch is functioning correctly by resetting it (hold the brake pedal and press the start button).

Solution

1. Preparation

Ensure the vehicle is in a safe and well-ventilated area.
Disconnect the 12V battery for safety.
Gather tools: multimeter, socket set, and torque wrench.

2. Inspect and Test the 12V Battery

Sub-step 1: Reconnect the 12V battery.
Sub-step 2: Use a multimeter to measure the voltage. If it reads below 12.4 volts, it requires charging or replacement.
Sub-step 3: If the battery is weak, connect a battery charger and charge to full capacity (typically 12.6 volts or higher).
Sub-step 4: If a new battery is needed, remove the old battery by unscrewing the retaining bolts and disconnecting the terminals (negative first, then positive).

3. Replace the 12V Battery (if necessary)

Sub-step 1: Install the new battery in reverse order of removal (positive terminal first, then negative).
Sub-step 2: Securely fasten the retaining bolts to the manufacturer's torque specification (usually around 10-12 Nm).
Sub-step 3: Reconnect the battery and start the vehicle to check functionality.

4. Additional Checks

If the issue persists, check for any blown fuses related to the starting system.
Inspect the contactors within the high-voltage battery for proper operation (if skilled and experienced).
Consult Tesla service for issues beyond basic battery checks.