Identify the Cause of the Noise

• Start by determining what type of noise you are hearing. This could be a squeaking, rattling, or clicking sound. Each noise can have different causes.
• Check if the noise occurs only when the vehicle is moving or also when stationary. This can help in isolating the problem.
• Try to identify if the noise is associated with turning the steering wheel, hitting bumps, or other specific actions.

Inspect Suspension Components

• Lift the vehicle using a jack and ensure it is safely supported on jack stands.
• Inspect the tie rods, ball joints, and other suspension components for any wear or damage. These parts can often cause noise that seems to be coming from the steering column.
• If you find any worn out or damaged components, replace them before proceeding with further diagnosis. Sometimes, replacing worn suspension parts solves the noise issue.

Check the Steering Column

• Remove the steering column covers to access the column components. This step might require using a screwdriver or other tools depending on how the covers are secured.
• Look for any obvious signs of wear or damage such as loose bolts, broken components, or anything else out of the ordinary.
• If necessary, tighten any bolts that may have come loose over time.
• Inspect the intermediate shaft and the universal joints for signs of wear. If these parts are worn out, they'll need to be replaced.

Lubricate the Steering Column

• If the steering column components are not damaged but are causing noise, they may just need lubrication. Apply a suitable lubricant to the column's moving parts.
• Focus on the steering shaft bearings and any moving joints within the steering column.
• After lubrication, check if the noise persists. If the noise disappears, the lubrication was likely all that was needed.

Examine the Steering Wheel and Clock Spring

• Check the steering wheel for any looseness. A loose steering wheel can sometimes cause noise.
• Inspect the clock spring (spiral cable) for damage. The clock spring is located just behind the steering wheel and can produce noise if it’s damaged.
• Replace the clock spring if necessary, following manufacturer guidelines or consulting with a professional if unsure.

Test Drive and Listen

• After performing these checks and adjustments, take the vehicle for a test drive.
• Pay close attention to see if the noise has been resolved. Turning the wheel back and forth gently while driving slowly can help you detect any persistent noises.
• If the noise continues, it may be necessary to consult a professional mechanic who has experience with Subaru vehicles, as they can provide a deeper inspection and diagnosis.