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my Tesla Model S Plaid/Refresh (2021-present) dash lights won't turn off, what should I check? - Tesla Model S
Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/my Tesla Model S Plaid/Refresh (2021-present) dash lights won't turn off, what should I check?

my Tesla Model S Plaid/Refresh (2021-present) dash lights won't turn off, what should I check?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes
1-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
558 words

Problem Statement

Learn how to diagnose and fix dash lights that won't turn off in Tesla Model S Plaid/Refresh. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Electrical
Estimated Time
1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the 12V battery before working on any electrical components.

Symptoms

  • •Dash lights remain illuminated even after the vehicle is powered off
  • •Possible 'Check Brake System' warning displayed
  • •Inconsistent operation of other electrical components (e.g., infotainment system, HVAC)
  • •Battery drain may occur if the issue persists
  • •Notifications of faults in the Tesla app (if connected)

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

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

  • •Tesla diagnostic tool
  • •Multimeter
  • •Basic hand tools (screwdrivers, socket set)

Parts Required

  • •Brake pedal switch (if found faulty)
  • •12V battery (if replacement is necessary)

Additional Information

Affected Component
Electrical
Estimated Time
1-3 hours
Difficulty
medium
Severity
medium
Tools Required
3 items
Parts Required
2 items

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Solution
1. Preparation
  • Ensure the vehicle is in a safe location and turned off.
  • Gather tools including a Tesla diagnostic tool, multimeter, and basic hand tools.
2. Check Settings
  • Access the vehicle's settings via the touchscreen interface.
  • Navigate to the "Display" settings and review options that may affect dash light behavior.
  • Adjust any settings that may inadvertently keep the dash lights on.
3. Inspect Brake Pedal Switch
  • Locate the brake pedal switch, typically found above the brake pedal.
  • Disconnect the electrical connector from the switch.
  • Test the switch with a multimeter to ensure it opens and closes properly when the brake pedal is pressed and released.
  • If faulty, replace the brake pedal switch.
4. Use Diagnostic Tool
  • Connect a Tesla diagnostic tool to the vehicle’s OBD-II port.
  • Scan for any error codes related to the electrical system.
  • Document any codes found and refer to the Tesla service manual for further troubleshooting.
5. Check 12V Battery
  • Open the frunk and locate the 12V battery.
  • Use a multimeter to measure the 12V battery voltage; it should read around 12.6 volts when fully charged.
  • Inspect the battery terminals for corrosion and ensure they are tight.
  • If the battery voltage is low, consider replacing the 12V battery.
6. Perform Soft Reset
  • Press and hold both scroll wheels on the steering wheel until the touchscreen turns off.
  • Release the scroll wheels and allow the system to reboot.
  • Check if the dash lights turn off after the reset.