how to troubleshoot the power steering assist failure in Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

565 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to troubleshoot and fix power steering assist failure in Tesla Model S (2012-2020). Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Steering

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on the electrical systems to avoid shocks or shorts.
•Always ensure the vehicle is in 'Park' mode when performing repairs to the steering system.

Symptoms

•Heavy steering feel, requiring more effort to turn the wheel
•Steering wheel not returning to the center after a turn
•Power steering warning message on the dashboard
•Unusual noises from the steering column or rack
•Loss of steering assist at low speeds

Diagnostic Steps

1
Check for any error messages or codes using the Tesla diagnostic tool or mobile app.
2
Inspect the power steering fluid level and condition, if applicable.
3
Verify the condition of the steering column and components for physical damage or wear.
4
Examine the electrical connections and wiring harness related to the power steering system.
5
Test the battery voltage and charging system to ensure adequate power supply to the steering assist system.
6
Perform a software update or reset using the vehicle's infotainment system to address potential software issues.

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

•Torque wrench
•Socket set
•Screwdrivers
•Tesla diagnostic tool

Parts Required

•Power steering control unit (if replacement is needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check for any error messages or codes using the Tesla diagnostic tool or mobile app.
2
Inspect the power steering fluid level and condition, if applicable.
3
Verify the condition of the steering column and components for physical damage or wear.
4
Examine the electrical connections and wiring harness related to the power steering system.
5
Test the battery voltage and charging system to ensure adequate power supply to the steering assist system.
6
Perform a software update or reset using the vehicle's infotainment system to address potential software issues.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface with the ignition off.
Gather necessary tools and parts.

2. Inspect and Secure Connections

Tools Required: Torque wrench, socket set
Remove the cover panel under the steering column.
Inspect all electrical connections and connectors for signs of corrosion or damage.
- Sub-steps:
  - Disconnect and reconnect each connector to ensure a solid connection.
  - Tighten any loose connections to the recommended torque specifications.

3. Replace Power Steering Control Unit (if necessary)

Tools Required: Socket set, screwdrivers
Locate the power steering control unit, typically found near the steering column.
- Sub-steps:
  - Disconnect the battery to prevent electrical shorts.
  - Remove any mounting bolts securing the control unit.
  - Disconnect the wiring harness from the control unit.
  - Install the new control unit by reversing the removal steps.
  - Reconnect the battery.

4. Software Update

Tools Required: Tesla diagnostic tool or access to Tesla service portal
Connect the vehicle to the Tesla service portal via Wi-Fi or mobile app.
- Sub-steps:
  - Check for and install any available software updates.
  - Perform a reset of the system if issues persist after updates.

5. Testing

Conduct a test drive to ensure that the power steering assist is functioning correctly.
- Monitor the steering feel and check for any warning messages.