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why is my Tesla Model S Original (2012-2020) traction control light on? - Tesla Model S
Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/why is my Tesla Model S Original (2012-2020) traction control light on?

why is my Tesla Model S Original (2012-2020) traction control light on?

Tesla Model S Plaid/Refresh (2021-present)

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

Problem Statement

Learn how to diagnose and fix the traction control light issue on your Tesla Model S (2012-2020). 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 battery before working on electrical systems.
  • •Allow components to cool before handling after vehicle operation.

Symptoms

  • •Traction control warning light illuminated on the dashboard
  • •Reduced power to the wheels during acceleration
  • •Unusual traction control behavior (e.g., engaging in dry conditions)
  • •Vehicle may feel unstable during acceleration
  • •System may intermittently disable or restrict power

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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

  • •OBD-II scanner
  • •Socket set
  • •Multimeter
  • •Basic hand tools
  • •Brake fluid tester

Parts Required

  • •Wheel speed sensors (if damaged)
  • •Brake fluid (if low)

Additional Information

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

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Solution
1. Preparation
  • Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
  • Disconnect the negative terminal of the 12V battery to prevent electrical shorts during repairs.
2. Inspect Wheel Speed Sensors
  • Tools Required: Socket set, multimeter
  • Remove the wheel covers or tires if necessary for access.
  • Check for any physical damage to the wheel speed sensors and wiring.
  • Use a multimeter to measure resistance across the wheel speed sensor terminals; compare with manufacturer's specifications.
  • Clean any debris or dirt from the sensor area.
3. Check Brake System
  • Tools Required: Brake fluid tester, basic hand tools
  • Inspect brake fluid reservoir for proper levels and top off with manufacturer-recommended brake fluid if low.
  • Verify that the brake pads and discs are in good condition.
  • Ensure the ABS module connections are secure and free of corrosion.
4. Update Software/Firmware
  • Tools Required: Tesla service tool or software
  • Connect to the Tesla service portal or use the vehicle's touchscreen to check for any available software updates.
  • Follow the prompts to download and install any necessary updates.
5. Reconnect Battery and Test
  • Reconnect the negative terminal of the battery.
  • Start the vehicle and monitor the dashboard for the traction control light.
  • Conduct a test drive to verify the functionality of the traction control system.