how to fix Tesla Model S Original (2012-2020) if it's displaying "service required"

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 diagnose and fix the 'Service Required' message in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical components.
•Allow the vehicle to cool down before inspecting electrical systems.

Symptoms

•Service Required message on the dashboard
•Decreased battery range
•Unusual noises from the electric motors
•Inconsistent charging behavior
•Reduced regenerative braking efficiency

Diagnostic Steps

1
Check the vehicle's software version and ensure it is up to date.
2
Use the Tesla mobile app or dashboard to view any diagnostic messages or alerts.
3
Run a battery health report using the vehicle settings.
4
Inspect the vehicle for any visible signs of wear or damage.
5
Verify tire pressure and condition.
6
Check the brake fluid level and condition.

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

•Tire pressure gauge
•Brake fluid tester
•Diagnostic tool

Parts Required

•Brake fluid

Related Faults

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Diagnostic Steps

1
Check the vehicle's software version and ensure it is up to date.
2
Use the Tesla mobile app or dashboard to view any diagnostic messages or alerts.
3
Run a battery health report using the vehicle settings.
4
Inspect the vehicle for any visible signs of wear or damage.
5
Verify tire pressure and condition.
6
Check the brake fluid level and condition.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface.
Gather tools such as a tire pressure gauge, brake fluid tester, and a diagnostic tool if required.
Disconnect the 12V battery for safety during electrical checks.

2. Update Software

Connect the vehicle to Wi-Fi.
Go to the settings menu on the touchscreen.
Select 'Software' and check for updates. Follow on-screen instructions to install any available updates.

3. Inspect Battery Health

Access the battery section in the settings menu.
Review the battery health report for any anomalies.
If the battery health is below acceptable levels (typically below 70%), consider contacting Tesla for a battery service.

4. Check Tire Pressure

Use a tire pressure gauge to measure the pressure of all four tires.
Inflate or deflate tires to the recommended PSI as specified on the driver's door jamb label.

5. Inspect Brake Fluid

Open the front trunk and locate the brake fluid reservoir.
Check the fluid level and color; it should be clear or light amber.
If the fluid is dark or low, replace it with the manufacturer-recommended brake fluid.

6. Check for Physical Damage

Inspect cables and connectors for wear or damage.
Look for any fluid leaks or signs of corrosion around the battery and electric motor components.