how to troubleshoot a power steering system failure in Tesla Outback 5th Generation (2015-2019)?

Subaru Outback 5th Generation (2015-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

4 min read

645 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 power steering system failure in Tesla Outback 5th Generation (2015-2019). Step-by-step guide with diagnostic procedures 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.
•Allow the engine to cool before accessing components.

Symptoms

•Steering wheel feels heavy or stiff
•Power steering warning light illuminated on the dashboard
•Unusual noises when steering (e.g., whining or grinding)
•Decreased responsiveness while turning the wheel
•Fluid leaks underneath the vehicle (if applicable)
•Steering assist intermittent or completely non-functional

Diagnostic Steps

1
Inspect power steering fluid levels and condition.
2
Scan the vehicle's onboard diagnostics for error codes related to the power steering system.
3
Visually inspect all electrical connections and wiring harnesses related to the power steering motor.
4
Check for any blown fuses related to the power steering system.
5
Test the power steering pump operation for proper functionality.
6
Verify the condition of the power steering assist motor.

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
•Power steering fluid
•Fluid catch pan

Parts Required

•Power steering fluid
•Power steering pump (if defective)
•Power steering assist motor (if defective)
•Fuses (if blown)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•Steering wheel feels heavy or stiff

•Power steering warning light illuminated on the dashboard

•Unusual noises when steering (e.g., whining or grinding)

•Decreased responsiveness while turning the wheel

•Fluid leaks underneath the vehicle (if applicable)

•Steering assist intermittent or completely non-functional

Diagnostic Steps

1
Inspect power steering fluid levels and condition.
2
Scan the vehicle's onboard diagnostics for error codes related to the power steering system.
3
Visually inspect all electrical connections and wiring harnesses related to the power steering motor.
4
Check for any blown fuses related to the power steering system.
5
Test the power steering pump operation for proper functionality.
6
Verify the condition of the power steering assist motor.

Solution

1. Preparation

Gather tools: OBD-II scanner, socket set, multimeter, power steering fluid, fluid catch pan.
Ensure the vehicle is parked on a level surface and the engine is turned off.
Disconnect the battery before starting any electrical work.

2. Check and Top Off Power Steering Fluid

Locate the power steering reservoir.
Remove the cap and check the fluid level against the dipstick or markings.
If low, add the appropriate type of power steering fluid until the proper level is reached.
Secure the cap back on and clean any spills.

3. Inspect Electrical Connections

Remove any covers or panels obstructing access to the power steering motor and wiring.
Visually check for frayed wires, loose connections, or corrosion.
Use a multimeter to check the voltage at the power steering motor connector while the vehicle is on. It should match the specified voltage in the service manual.
Repair or replace any damaged wiring or connectors.

4. Replace Blown Fuses

Locate the fuse box, typically under the dashboard or in the engine compartment.
Consult the fuse diagram to identify the power steering fuse.
Remove the fuse and inspect it; replace it if it is blown.
Reinstall the fuse and ensure it is seated properly.

5. Test and Replace Power Steering Pump (If Necessary)

If fluid levels are adequate and fuses are intact but the system is still non-functional, test the power steering pump.
Disconnect the power steering pump connector and use a multimeter to test for continuity.
If faulty, remove the pump (typically requires draining fluid first).
Replace with a new power steering pump, ensuring all connections are secure.

6. Inspect and Replace Power Steering Assist Motor (If Necessary)

If the pump is functioning correctly but the system still fails, inspect the power steering assist motor.
Remove the motor from its housing, following manufacturer specifications for disassembly.
Test the motor for operation using a multimeter.
Replace with a new power steering assist motor if it is defective.