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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

10-15 minutes

Time

easy

Difficulty

medium

Severity

3 min read

431 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 reset instructions.

Affected Component

Electrical

Estimated Time

10-15 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in 'Park' before attempting any resets or diagnostics.

Symptoms

•Check engine light illuminated on the dashboard
•Vehicle diagnostic codes stored in the system
•Potentially improved performance after repairs, but light remains on

Diagnostic Steps

1
Connect the Tesla to your home Wi-Fi network for software updates.
2
Use the Tesla mobile app or vehicle touchscreen to check for any active alerts or notifications.
3
Inspect any recent repairs or maintenance performed to ensure they are completed correctly.
4
Access the vehicle’s diagnostics through the touchscreen to view stored error codes.
5
Confirm that the error codes are resolved or cleared before attempting to reset the CEL.

Solution

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

•Tesla mobile app
•Access to Wi-Fi

Parts Required

•None (for resetting the CEL)

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Diagnostic Steps

1
Connect the Tesla to your home Wi-Fi network for software updates.
2
Use the Tesla mobile app or vehicle touchscreen to check for any active alerts or notifications.
3
Inspect any recent repairs or maintenance performed to ensure they are completed correctly.
4
Access the vehicle’s diagnostics through the touchscreen to view stored error codes.
5
Confirm that the error codes are resolved or cleared before attempting to reset the CEL.

Solution

1. Preparation

Ensure the vehicle is in "Park" mode.
Connect the vehicle to a Wi-Fi network to ensure any software updates can be installed, if necessary.

2. Using the Touchscreen

Step 1: Tap on the "Service" icon from the main screen.
Step 2: Select "Diagnostics."
Step 3: Choose "Clear DTCs" (Diagnostic Trouble Codes) from the options available.
Step 4: Confirm the action when prompted to clear the codes and reset the check engine light.

3. Using the Mobile App

Step 1: Open the Tesla mobile app.
Step 2: Navigate to the "Service" section.
Step 3: Check for any alerts or notifications related to the CEL.
Step 4: If available, select the option to clear any active alerts and reset the check engine light via the app.

4. Final Check

Step 1: After resetting, monitor the dashboard for the check engine light.
Step 2: Drive the vehicle for a short distance to ensure the light does not reappear.