Get your steering rack check up at yours nearest workshop and professional advice if you notice some unknown noise coming from under chassis or when driving feel uncomfortable like steering wheel not stable, especially when having through pothole feel noise coming on steering wheel from under chassis and etc. For those issue also need for the check immediately.

To maintain a steering rack, regularly check power steering fluid levels, avoid hitting pothole and if notice power steering fluid got less or in low level please check immediately to avoid serious damage for power steering pump and steering rack, drive cautiously on rough roads, have your wheel alignment checked often, and listen for unusual noises or vibrations while steering, as these could indicate a problem with the rack, if you notice any issues, get them inspected by a mechanic promptly. 

Fluid level check: Regularly check the power steering fluid level and top it up as needed with the correct type of fluid. 

Fluid flush: Follow the manufacturer’s recommendations for power steering fluid flushing and replacement. 

Smooth driving: Avoid aggressive steering maneuvers, sharp turns, and sudden movements that put excessive stress on the rack. 

Road conditions: Be cautious on roads with potholes and rough surfaces. 

Wheel alignment: Get your wheel alignment checked regularly, especially after suspension work. 

Listen for noises: Pay attention to any unusual noises or vibrations while steering, as they can indicate a failing rack. 

Rubber Boots inspection: Check the rubber boots on the steering rack for tears or damage, as they protect the internal components from dirt and debris. 

Professional inspection: If you suspect any issues with your steering rack, have it inspected by a qualified mechanic. 

In general, a steering rack can last anywhere from 2 to 5 years base on driving condition(100,000mileage to 150,000). Several factors can cause a steering rack to fail prematurely, including: Lack of Maintenance: If the steering system is not properly maintained, it can cause premature wear and tear on the steering rack.