how to troubleshoot steering issues in Tesla Model S Plaid/Refresh (2021-present)

Solution

1. Preparation

• Gather the necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the ignition is off.
• Disconnect the 12V battery to prevent any electrical issues.

2. Inspect and Secure Connections

• Sub-steps:
  1. Locate the electronic power steering control module.
  2. Examine all connectors for corrosion or loose connections.
  3. Re-seat any loose connectors and clean corroded terminals.

3. Replace Faulty Components

• Sub-steps:
  1. If the steering angle sensor or EPS module is faulty, remove the steering column cover.
  2. Disconnect the wiring harness attached to the steering angle sensor.
  3. Remove the sensor using the appropriate socket (usually T20 or T25 Torx).
  4. Install the new sensor and reconnect the wiring harness.
  5. Reassemble the steering column cover.

4. Calibration of Steering Angle Sensor

• Sub-steps:
  1. Reconnect the 12V battery and power on the vehicle.
  2. Navigate to the service menu on the touchscreen.
  3. Select the option to calibrate the steering angle sensor.
  4. Follow on-screen prompts to complete the calibration process.

5. Test Drive

• Sub-steps:
  1. Perform a test drive to verify that the steering issues have been resolved.
  2. Monitor the steering response and look for any warning messages.

Tools Required:

• OBD-II scanner
• Basic socket set (including Torx bits)
• Multimeter
• Torque wrench

Parts Required:

• Steering angle sensor (if faulty)
• Electronic power steering module (if necessary)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the 12V battery before working on electrical components to prevent short circuits.
• Ensure the vehicle is securely parked and cannot roll during repairs.