how to fix the power steering issue 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

525 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 diagnose and fix power steering issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, 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 electrical systems to avoid shock.
•Allow the vehicle to cool before performing any work related to the power steering system.

Symptoms

•Steering wheel feels heavy or difficult to turn
•Power steering warning light illuminated on the dashboard
•Unusual noises when turning the steering wheel
•Loss of steering assist at low speeds
•Intermittent steering assist failure

Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify potential issues with the power steering system.
2
Inspect the power steering fluid level and condition, ensuring it is at the recommended level and free of contamination.
3
Visually inspect the power steering motor and associated wiring for signs of damage or corrosion.
4
Test the power steering system's voltage supply with a multimeter to confirm the motor is receiving the correct voltage.
5
Verify the functionality of the steering angle sensor through Tesla's diagnostic tools.

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
•Multimeter
•Socket set
•Torque wrench
•Screwdriver set

Parts Required

•Power steering fluid (specific to Tesla Model S)
•Power steering motor (if replacement is necessary)

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Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify potential issues with the power steering system.
2
Inspect the power steering fluid level and condition, ensuring it is at the recommended level and free of contamination.
3
Visually inspect the power steering motor and associated wiring for signs of damage or corrosion.
4
Test the power steering system's voltage supply with a multimeter to confirm the motor is receiving the correct voltage.
5
Verify the functionality of the steering angle sensor through Tesla's diagnostic tools.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and turned off.
Gather necessary tools and parts.
Disconnect the 12V battery before beginning repairs to prevent electrical shock.

2. Check and Refill Power Steering Fluid

Inspect the power steering reservoir for fluid level.
If low, add the recommended type of power steering fluid (check owner’s manual for specifications).
Secure the reservoir cap back in place.

3. Inspect and Replace Power Steering Motor

Tools Required: Socket set, torque wrench, screwdriver set, multimeter.
Remove the wheel well liner to access the power steering motor.
- Unscrew the fasteners securing the liner.
Disconnect the electrical connector from the power steering motor.
Unbolt the power steering motor from its mounting bracket using the socket set.
Replace with a new power steering motor, ensuring it matches the OEM specifications.
Reconnect the electrical connector and secure the motor in place with the bolts (torque to manufacturer specifications).

4. Reconnect Battery and Test

Reconnect the 12V battery.
Start the vehicle and turn the steering wheel from lock to lock to help bleed the system of air.
Check for any leaks around the power steering motor and hoses.