what causes steering wheel stiffness in Toyota Corolla E170 (2013-2019)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and set the parking brake.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Top Off Power Steering Fluid

• Locate the power steering reservoir.
• Remove the cap and check the fluid level against the dipstick markings.
• If low, add the recommended type of power steering fluid (typically Dexron III or equivalent).
• Replace the cap securely.

3. Inspect and Replace Power Steering Pump (if necessary)

• Remove any components obstructing access to the power steering pump (e.g., air intake duct).
• Disconnect the power steering lines from the pump using a wrench (have a drain pan ready for fluid).
• Unbolt the power steering pump from its mounting bracket using a socket set.
• Install the new pump by reversing the removal process, ensuring all bolts are torqued to the manufacturer specifications (usually around 25-30 ft-lbs).
• Refill the power steering fluid after installation, and bleed the system by turning the steering wheel from lock to lock with the engine running.

4. Inspect the Steering Rack and Tie Rods

• Safely elevate the vehicle using jack stands.
• Check the steering rack for any leaks or damage.
• Wiggle the tie rods to ensure there is no excessive play; replace if necessary.
• Reassemble any components removed for access and ensure all connections are secure.