how to fix an engine light on my Tesla Model S Plaid/Refresh (2021-present) that's always on?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

507 words

Problem Statement

Learn how to troubleshoot and fix the engine light issue on your Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always ensure the vehicle is in Park and powered down before performing any inspections or repairs.

Symptoms

•Check Engine Light illuminated
•Reduced power or acceleration
•Unusual sounds from the motor
•Poor energy efficiency or increased battery consumption
•Notifications or alerts on the vehicle's display

Diagnostic Steps

1
Access the vehicle's onboard diagnostics by navigating to the service menu in the touchscreen interface.
2
Use the Tesla app or onboard diagnostics to check for error codes.
3
Review any alerts or notifications on the vehicle's display for specific issues.
4
Inspect all major systems, including battery health, motor performance, and charging systems through the vehicle’s diagnostics.
5
Conduct a visual inspection of the vehicle’s exterior and under the hood for any obvious signs of damage or leaks.

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

•Laptop with Tesla diagnostic software
•Basic hand tools

Parts Required

•None specifically required unless a fault is identified that necessitates replacement.

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Access the vehicle's onboard diagnostics by navigating to the service menu in the touchscreen interface.
2
Use the Tesla app or onboard diagnostics to check for error codes.
3
Review any alerts or notifications on the vehicle's display for specific issues.
4
Inspect all major systems, including battery health, motor performance, and charging systems through the vehicle’s diagnostics.
5
Conduct a visual inspection of the vehicle’s exterior and under the hood for any obvious signs of damage or leaks.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface.
Gather necessary tools: laptop with Tesla diagnostic software (if applicable), basic hand tools.

2. Clear Error Codes

Using the Tesla app or service menu, select the option to clear any stored error codes.
Confirm that the codes are cleared and monitor if the Check Engine Light reappears after a short drive.

3. Inspect Battery Systems

Check the battery status through the touchscreen.
If any battery-related errors are present, inspect the battery connections for corrosion or loose terminals.
Ensure that the battery is properly charged and that there are no thermal management issues.

4. Update Software

Navigate to the software update section in the settings.
Ensure the vehicle has the latest software installed; if not, initiate the update process.
Restart the vehicle after the update to ensure that all systems are recalibrated.

5. Consult Tesla Service

If the Check Engine Light remains illuminated after performing the above steps, schedule a service appointment through the Tesla app.
Provide details about any symptoms and findings from your diagnostics for more efficient troubleshooting.