my Tesla Model S won't start and 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

495 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 a no-start condition 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 negative battery terminal first to prevent short circuits
•Allow the high voltage system to discharge before working on any electric components

Symptoms

•Clicking noise when the start button is pressed
•No engine turnover or start
•Dashboard lights may illuminate but no power to the drive system
•Possible battery warning indicator on the dash
•Electric accessories may not function properly or operate intermittently

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to ensure it has sufficient charge (at least 12.4 volts)
2
Inspect the battery terminals for corrosion or loose connections
3
Use the Tesla mobile app to check for any alerts or notifications related to battery status
4
Attempt a hard reset by holding down the brake pedal and pressing the scroll wheels on the steering wheel until the screen powers down and restarts
5
Verify that the vehicle is in 'Park' mode, as starting issues can occur if the vehicle is not in the correct gear
6
Check for any service alerts or error codes through the onboard diagnostics interface

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
•Battery charger

Parts Required

•New 12V battery (specific to Tesla Model S specifications)

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Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to ensure it has sufficient charge (at least 12.4 volts)
2
Inspect the battery terminals for corrosion or loose connections
3
Use the Tesla mobile app to check for any alerts or notifications related to battery status
4
Attempt a hard reset by holding down the brake pedal and pressing the scroll wheels on the steering wheel until the screen powers down and restarts
5
Verify that the vehicle is in 'Park' mode, as starting issues can occur if the vehicle is not in the correct gear
6
Check for any service alerts or error codes through the onboard diagnostics interface

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface and is in "Park."
Gather tools and equipment: multimeter, battery charger (if needed), socket set.

2. Test and Replace the 12V Battery

Sub-step 1: Disconnect the negative terminal of the 12V battery using a socket wrench.
Sub-step 2: Disconnect the positive terminal of the 12V battery.
Sub-step 3: Remove the old 12V battery from the battery tray.
Sub-step 4: Install the new 12V battery, connecting the positive terminal first, followed by the negative terminal.
Sub-step 5: Tighten connections securely and ensure there is no corrosion.

3. Recharge or Replace the High Voltage Battery

Sub-step 1: If the 12V battery is charged and the issue persists, connect the vehicle to a Tesla Supercharger or Level 2 charger.
Sub-step 2: Allow the vehicle to charge for a minimum of 30 minutes to check for any improvements.
Sub-step 3: If the vehicle still does not start, consult with a Tesla technician for high voltage battery diagnostics.