Tesla Model S Original (2012-2020) check engine light is on, how do I reset it?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

419 words

Problem Statement

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

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Be cautious when working with electrical systems; ensure the vehicle is powered down before connecting or disconnecting any devices.

Symptoms

•Check engine light illuminated
•Possible loss of regenerative braking efficiency
•Reduced acceleration performance
•Notification of vehicle service required
•Potential abnormal battery usage

Diagnostic Steps

1
Use an OBD-II scanner to check for any error codes that may provide insight into the issue causing the check engine light to illuminate.
2
Review the error codes and determine if they are associated with a known issue or if further investigation is needed.
3
If applicable, address any underlying issues indicated by the codes before proceeding 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

Parts Required

•None required for resetting the light. However, repairs may be needed based on diagnostic codes.

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Diagnostic Steps

1
Use an OBD-II scanner to check for any error codes that may provide insight into the issue causing the check engine light to illuminate.
2
Review the error codes and determine if they are associated with a known issue or if further investigation is needed.
3
If applicable, address any underlying issues indicated by the codes before proceeding to reset the light.

Solution

1. Preparation

Ensure the vehicle is parked in a safe, well-ventilated area.
Have the OBD-II scanner ready for use.

2. Connect OBD-II Scanner

Locate the OBD-II port under the dashboard near the driver's seat.
Plug in the OBD-II scanner and turn on the vehicle.

3. Read Error Codes

Follow the scanner instructions to read and record any error codes present.
Take note of any codes that may require attention.

4. Clear Error Codes

Using the OBD-II scanner, navigate to the option that allows you to clear or reset the error codes.
Select the option and confirm the action to clear the codes, which should also turn off the check engine light.

5. Disconnect the Scanner

Once the codes are cleared, safely disconnect the OBD-II scanner from the port.

6. Monitor Vehicle

Drive the vehicle for a short distance to ensure the check engine light does not reappear.