how to fix the Tesla Model 3 Original (2017-2023) dashboard lights that won't turn off

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

529 words

Problem Statement

Learn how to diagnose and fix dashboard lights that won't turn off in Tesla Model 3 (2017-2023). Step-by-step guide with symptoms and solutions.

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 to avoid shocks or shorts.

Symptoms

•Dashboard lights remain illuminated continuously
•Possible 'Check Battery' or 'Charge' warning messages displayed
•Increased battery drain observed
•Inability to enter energy-saving mode
•Occasional flickering of dashboard lights

Diagnostic Steps

1
Check the vehicle settings to ensure dashboard lights are not set to remain on.
2
Inspect for any active alerts or notifications on the touchscreen display.
3
Scan the vehicle’s systems using Tesla's diagnostic tool or mobile app for any fault codes.
4
Verify the battery state of charge to rule out low battery issues.
5
Perform a soft reset of the vehicle by holding down the two scroll buttons on the steering wheel.

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

•Trim removal tool
•Tesla diagnostic tool (or mobile app)

Parts Required

•Ambient light sensor (if found defective)

Related Faults

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Diagnostic Steps

1
Check the vehicle settings to ensure dashboard lights are not set to remain on.
2
Inspect for any active alerts or notifications on the touchscreen display.
3
Scan the vehicle’s systems using Tesla's diagnostic tool or mobile app for any fault codes.
4
Verify the battery state of charge to rule out low battery issues.
5
Perform a soft reset of the vehicle by holding down the two scroll buttons on the steering wheel.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in a safe environment (parked, with the parking brake engaged).
Disconnect the 12V battery to prevent electrical shorts during repairs.

2. Inspect Dashboard Settings

Reconnect the 12V battery.
Power on the vehicle and navigate to the "Controls" menu on the touchscreen.
Go to "Display" settings and ensure the “Stay Awake” feature is configured correctly.
Adjust any settings that may keep dashboard lights on unnecessarily.

3. Check for Faulty Sensors

Remove the dashboard cover if necessary (use a trim removal tool).
Inspect the ambient light sensor located near the rear-view mirror for dirt or obstruction.
Clean the sensor gently and ensure proper connection to the wiring harness.

4. Reset the Vehicle Software

Reboot the touchscreen by holding down the two scroll buttons on the steering wheel until the screen resets.
Allow the system to reboot completely and check if the dashboard lights turn off.

5. Inspect Wiring and Connections

If the issue persists, visually inspect the wiring harnesses around the dashboard and under the steering column for any loose or damaged connections.
Tighten or repair any loose connections found.

6. Run Diagnostic Test

Use the Tesla diagnostic tool or mobile app to run a comprehensive vehicle check.
Follow any prompts for repairs or updates that may be necessary based on fault codes retrieved.