What should I do if my 2013 Volvo XC60 has a steering assist warning light?

Learn how to diagnose and repair the steering assist warning light issue on your 2013 Volvo XC60 with our detailed guide.

Step 1: Initial Inspection

• Visual Inspection: Check for any visible signs of damage or wear around the steering components, including the steering rack, tie rods, and power steering pump.
• Battery Condition: Ensure the vehicle's battery is fully charged. A weak battery can affect electrical systems, including power steering.

Step 2: Scan for Diagnostic Trouble Codes (DTCs)

• Tools Required: OBD-II Scanner
• Procedure:
  1. Connect the OBD-II scanner to the vehicle's OBD-II port (typically located under the dashboard on the driver's side).
  2. Turn the ignition key to the "ON" position without starting the engine.
  3. Use the scanner to read any stored DTCs related to the steering assist system. Common codes may include C0070 (Steering Angle Sensor) or related codes indicating issues with the EPS (Electric Power Steering) system.

Step 3: Check Power Steering Fluid Level

• Tools Required: Rags, funnel (if needed)
• Procedure:
  1. Open the hood and locate the power steering fluid reservoir (usually near the front of the engine bay).
  2. Check the fluid level against the markings on the reservoir. If it’s low, top it off with the correct type of power steering fluid as specified in the owner's manual.

Step 4: Inspect the Steering Angle Sensor

• Tools Required: Multimeter, torque wrench
• Procedure:
  1. Locate the steering angle sensor (usually near the steering column).
  2. Disconnect the sensor and use a multimeter to test its resistance according to the specifications.
  3. Reconnect the sensor and ensure it is properly mounted and secured.

Step 5: Inspect Wiring and Connectors

• Tools Required: Visual inspection tools (flashlight), multimeter
• Procedure:
  1. Inspect wiring harnesses leading to the power steering system for any fraying, corrosion, or disconnections.
  2. Check connectors for tightness and cleanliness. Use a multimeter to test for continuity and proper voltage at the connectors.

Repair Instructions

Repairing or Replacing Power Steering Components

If diagnostics indicate a faulty component (e.g., EPS module or power steering pump):

1. Disconnect Battery: Disconnect the negative battery terminal to prevent any electrical shorts.

2. Remove Steering Column Covers: Use a Phillips screwdriver to remove screws securing the steering column covers and gently pull them apart.

3. Replace Faulty Component:

   • EPS Module: Remove bolts securing the EPS module. Disconnect the electrical connectors. Install the new module, secure with bolts, and reconnect the electrical connectors.
   • Power Steering Pump: Drain the power steering fluid. Disconnect hoses from the pump, remove mounting bolts using a socket set, and replace with a new pump. Reconnect hoses and refill the system with new fluid.

4. Reassemble: Reinstall any removed covers or components.

5. Reconnect Battery: Reconnect the negative battery terminal.

6. Clear DTCs: Use the OBD-II scanner to clear any stored codes.

7. Test Drive: Start the vehicle and take it for a test drive to ensure the steering assist warning light is off and the steering operates normally.

Final Checks

• After repairs, always perform a full inspection of the steering system and road test the vehicle to confirm that the steering assist warning light remains off and that steering response is normal.

Conclusion

In case the warning light persists after following these steps, it is advisable to consult with a professional automotive technician or visit a Volvo service center for further diagnostics and repairs.