my Tesla Model S 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

496 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. 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 high-voltage battery before working on electrical systems.
•Wear safety gloves and goggles when handling batteries.

Symptoms

•Clicking sound when the start button is pressed
•Dashboard lights illuminate but engine does not engage
•Possible reduced power or electrical anomalies prior to failure
•No response from the vehicle systems when attempting to start
•Occasional error messages on the display

Diagnostic Steps

1
Check the vehicle's battery level and state of charge using the Tesla app or onboard display.
2
Inspect the 12V battery for any visible damage or corrosion on terminals.
3
Attempt a soft reset of the vehicle by holding down the scroll wheels on the steering wheel until the screen reboots.
4
Verify the condition of the high-voltage battery by checking for any warning lights on the dashboard.
5
Use a multimeter to test the voltage of the 12V battery; it should read around 12.6 volts or higher.
6
If needed, check for any software updates available through the Tesla app.

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
•Wrench set
•Portable battery jump starter

Parts Required

•12V battery

Related Faults

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Diagnostic Steps

1
Check the vehicle's battery level and state of charge using the Tesla app or onboard display.
2
Inspect the 12V battery for any visible damage or corrosion on terminals.
3
Attempt a soft reset of the vehicle by holding down the scroll wheels on the steering wheel until the screen reboots.
4
Verify the condition of the high-voltage battery by checking for any warning lights on the dashboard.
5
Use a multimeter to test the voltage of the 12V battery; it should read around 12.6 volts or higher.
6
If needed, check for any software updates available through the Tesla app.

Solution

1. Preparation

Gather tools: multimeter, socket set, wrench set, and possibly a portable battery jump starter.
Ensure the vehicle is in a safe, accessible area to work on.
Disconnect the high-voltage battery if working on electrical systems.

2. Battery Inspection and Replacement

Inspect the 12V Battery:
- Open the front trunk (frunk) and locate the 12V battery.
- Check connections for corrosion and tightness; clean if necessary.
Test the 12V Battery:
- Use a multimeter to measure voltage. If it’s below 12.4 volts, consider charging or replacing the battery.
Replace the 12V Battery (if necessary):
- Disconnect negative terminal first, followed by the positive terminal.
- Remove the old battery from its compartment.
- Install the new battery in reverse order: connect positive terminal first, then negative.
- Secure the battery and make sure all connections are tight.

3. High-Voltage Battery Check (if applicable)

If the 12V battery is in good condition but the car still won’t start, check the high-voltage battery status.
Use the Tesla app to see if the battery has any significant issues or alerts.