how to reset check engine light in Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

422 words

Problem Statement

Learn how to reset the check engine light in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and safety tips.

Affected Component

Electrical

Estimated Time

30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is powered off before disconnecting the battery.
•Be cautious when working with the 12V battery to avoid short circuits.

Symptoms

•Check engine light illuminated on the dashboard
•No noticeable performance issues
•Vehicle may have stored diagnostic trouble codes (DTCs)
•Possible warnings related to battery or powertrain

Diagnostic Steps

1
Use a diagnostic tool to scan for any stored error codes that may have triggered the check engine light.
2
Review the vehicle's systems for any alerts or notifications on the touchscreen display.
3
Ensure that any previous issues have been resolved before attempting to reset the light.

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
•Socket wrench

Parts Required

•None specific unless battery terminals or connectors are damaged.

Related Faults

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Solution

1. Preparation

Ensure the vehicle is parked in a safe location with the parking brake engaged.
Make sure the vehicle is fully powered on; the touchscreen should be active.

2. Use the Touchscreen

Navigate to the "Controls" menu from the main screen.
Select "Service" from the dropdown options.
Tap on "Clear Alerts" or "Reset Vehicle" options as per the current software version.
Confirm the action to reset any alerts or warnings.

3. Disconnect the 12V Battery (if necessary)

Open the trunk and locate the 12V battery compartment.
Using a socket wrench, disconnect the negative terminal of the 12V battery.
- Safety Warning: Ensure the vehicle is powered off before disconnecting the battery.
Wait for at least 10 minutes to allow all systems to reset.
Reconnect the negative terminal and secure it properly.

4. Drive Cycle

After resetting, perform a drive cycle by driving the vehicle to allow the onboard systems to recalibrate and ensure that the CEL does not return.