why is my Tesla Model 3 Original (2017-2023) showing an error message on the screen?

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

494 words

Problem Statement

Learn how to diagnose and fix error messages on Tesla Model 3 (2017-2023). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle remains in a safe location during the update process.
•Disconnecting the battery may reset vehicle settings; ensure you have vehicle settings backed up if necessary.
•Ensure the vehicle is powered down before working on electrical components.

Symptoms

•Error message displayed on the touchscreen
•Potential loss of certain functions (e.g., Autopilot, navigation)
•System reboot of the touchscreen
•Reduced battery range or performance
•Warning lights illuminated on the dashboard

Diagnostic Steps

1
Check for any error codes using the Tesla mobile app or onboard diagnostics.
2
Perform a soft reset of the touchscreen by holding down the two scroll wheels on the steering wheel until the screen resets.
3
Inspect the vehicle's software version and verify if an update is available.
4
Review the vehicle's logs via the Tesla app for any specific error messages or alerts.
5
Check the 12V battery health status using the app or by accessing the vehicle’s service menu.
6
Inspect the vehicle’s electrical connections for corrosion or loose wiring, especially around the battery and control modules.

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

•10mm socket or wrench
•Wire brush
•Dielectric grease
•Basic hand tools (screwdrivers, pliers)

Parts Required

•Dielectric grease (if corrosion is found)

Related Faults

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Diagnostic Steps

1
Check for any error codes using the Tesla mobile app or onboard diagnostics.
2
Perform a soft reset of the touchscreen by holding down the two scroll wheels on the steering wheel until the screen resets.
3
Inspect the vehicle's software version and verify if an update is available.
4
Review the vehicle's logs via the Tesla app for any specific error messages or alerts.
5
Check the 12V battery health status using the app or by accessing the vehicle’s service menu.
6
Inspect the vehicle’s electrical connections for corrosion or loose wiring, especially around the battery and control modules.

Solution

1. Software Update

Sub-steps:
1. Connect the vehicle to Wi-Fi.
2. Go to the ‘Software’ section on the touchscreen.
3. Check for available updates and follow the prompts to install.
Tools Required: None, just Wi-Fi access.
Safety Warnings: Ensure the vehicle remains in a safe location during the update process.

2. Resetting the 12V Battery

Sub-steps:
1. Open the frunk (front trunk) and locate the 12V battery.
2. Disconnect the negative terminal of the 12V battery.
3. Wait for 5 minutes before reconnecting the terminal.
4. Ensure all connections are tight and secure.
Tools Required: 10mm socket or wrench.
Safety Warnings: Disconnecting the battery may reset vehicle settings; ensure you have vehicle settings backed up if necessary.

3. Inspecting Electrical Connections

Sub-steps:
1. Visually inspect the wiring harnesses connected to the battery and control modules for signs of damage or corrosion.
2. Clean any corrosion found with a wire brush and apply dielectric grease to prevent further corrosion.
3. Reconnect any loose or damaged connections securely.
Tools Required: Wire brush, dielectric grease, basic hand tools (screwdrivers, pliers).
Safety Warnings: Ensure the vehicle is powered down before working on electrical components.