How often should I change the power steering fluid on my Lexus?

For most Lexus models that use hydraulic power steering, there isn’t a fixed maintenance interval for changing the fluid; replacements are typically recommended only if the fluid is contaminated, the system leaks, or you notice steering issues. If your model uses electric power steering (EPAS), there is no hydraulic fluid to change. Always check your owner’s manual or ask a Lexus-certified technician to confirm the correct maintenance for your exact year and model.

Hydraulic vs EPAS: Does your Lexus need a fluid change?

Hydraulic power steering systems rely on a dedicated fluid to transfer effort from the steering wheel to the wheels. EPAS, which is used on some newer Lexus models, uses an electric motor and typically has no fluid reservoir or pump at all. Because of this, a routine fluid change is not a universal requirement across the lineup and depends on your specific vehicle configuration. When in doubt, verify the system type and the recommended service interval in your manual or with a dealer.

Why this matters for maintenance

Knowing whether your car has hydraulic PS or EPAS directly affects whether you’ll ever schedule a PS fluid change and how you should approach a service appointment.

What the owner’s manual typically says about intervals

In many Lexus owner’s manuals, there isn’t a fixed mileage interval for changing power steering fluid. Instead, the guidance focuses on inspecting the fluid’s level and condition during routine service, and performing a change only if contamination, a leak, or steering issues are detected. If a replacement is recommended, the manual will specify the appropriate interval or condition-based criteria for your model and year.

Indicators that a fluid change or service may be needed

Here are common signs that you should have the fluid checked and potentially changed. This list helps you decide whether a service is warranted.

• Fluid color and odor: clean power steering fluid is typically light reddish to amber; burnt, dark, or metallic-smelling fluid suggests contamination or overheating.


• Steering effort: increased effort, stiffness, or a delayed response can indicate fluid problems or air in the system.


• Noise: whining, groaning, or squealing noises from the steering pump when turning the wheel.


• Leaks: visible fluid pooling around the pump, hoses, or steering rack.


• Low fluid level: a drop in reservoir level during routine checks.


• System contamination: gritty or cloudy appearance in the fluid.

If you notice any of these symptoms, schedule an inspection with a Lexus technician. A fluid change may be recommended, or the issue may be addressed through topping up, bleeding, or a targeted leak repair rather than a full flush.

How to approach a replacement (if advised by a technician)

Before listing the steps, note that power steering systems can differ by model. Use manufacturer-approved procedures and fluids, and consider professional service for reliability and to avoid air pockets or damage. Some Lexuses may require a full system flush, while others can be serviced with a drain-and-fill and a careful bleed.

• Use the correct fluid: only use the Lexus-approved power steering fluid (or the fluid specified in your manual); avoid mixing fluids from different families.


• Choose a method: drain-and-fill (simpler) or a full system flush (more thorough). A full flush may require a specialized machine and a specific bleeding sequence to remove air.


• Bleed and verify: refill to the correct level, start the engine, turn the steering wheel from lock to lock several times to remove air, recheck the level, and take a short test drive to ensure smooth operation.

Because incorrect bleeding or using the wrong fluid can damage the pump or rack, many Lexus owners opt for professional service to ensure the job is done correctly.

Summary

Bottom line: there is no universal interval to change power steering fluid on Lexus vehicles. If your car uses hydraulic PS, routine changes are not typically scheduled; you replace the fluid only when contamination, leaks, or steering issues are detected. If your model uses EPAS, there is no hydraulic fluid to service. Always consult your owner’s manual or a Lexus-certified technician to confirm the correct maintenance plan for your exact model and mileage. Regular inspections during service visits help catch issues early, and using the correct fluid is essential to protect the system.

Is a power steering fluid flush really necessary?

Yes, you need to flush power steering fluid to remove contaminants and keep the system working properly. Flushing the fluid prevents damage to the steering pump and other components, extends the life of the system, and ensures smooth steering. It's recommended to flush it periodically, and you should check your owner's manual for specific intervals and any warnings. 
Benefits of flushing power steering fluid 
You can watch this video to learn how to change power steering fluid: 55sClassic Car MaintenanceYouTube · Jun 20, 2025

• Removes contaminants: Over time, power steering fluid becomes dirty, which can cause wear and damage to the system. 
• Extends system life: Regularly flushing the fluid helps prevent costly repairs to the power steering pump and other components. 
• Improves performance: A flush results in smoother, more responsive steering, making it safer and more enjoyable to drive. 
• Prevents damage: Contaminated fluid can cause the pump to work harder, leading to premature wear and potential failure. 

Signs that you need a flush

• Dark, dirty, or burnt-smelling fluid in the reservoir
• Noises when turning the steering wheel
• Difficulty steering or a sluggish feel when turning
• Leaking fluid 

This video demonstrates the signs of bad power steering fluid: 55sChrisFixYouTube · May 2, 2014
How often to flush

• Your owner's manual is the best source for the recommended service interval. 
• A general guideline is every 50,000 miles, but this can vary significantly by vehicle and driving conditions. 

Important considerations

• Modern systems: Some modern cars have electric power steering and do not use hydraulic fluid, so check if your vehicle has a power steering fluid reservoir before looking for it, notes a YouTube video. 
• Honest mechanics: While flushing is beneficial, be aware that some shops may recommend unnecessary services. Always consult your owner's manual to determine if a flush is needed based on your car's requirements, says RepairPal. 

How often does power steering fluid need to be changed?

Power steering fluid generally needs to be changed every 30,000 to 100,000 miles, with many experts recommending an interval of around every 75,000 miles or every two to four years. You should also change it if you notice signs like stiff steering, dark or dirty fluid, or whining noises, as these indicate the fluid has lost its effectiveness. Checking your owner's manual is the best way to find the specific interval for your vehicle. 
Mileage and time recommendations

• General guideline: Change the fluid between every 30,000 to 100,000 miles. 
• Common interval: Many sources suggest a sweet spot of every 75,000 miles or every two to four years. 
• Severe conditions: You may need to change it more frequently if you frequently drive in stop-and-go traffic, tow heavy loads, or drive in extreme temperatures. 

Signs that your power steering fluid needs changing

• Difficulty steering: The steering wheel feels stiff or heavy. 
• Strange noises: You hear whining, groaning, or squealing sounds when turning the wheel. 
• Dark or dirty fluid: The fluid is murky, dark-colored, or has a burnt smell instead of being clear or pinkish. 
• Shuddering: The steering wheel shakes or shudders. 
• Low fluid level: While topping off is a temporary fix, low fluid can indicate a leak or old, contaminated fluid that needs replacing. 

You can watch this video to see what old power steering fluid looks like and learn about the benefits of changing it: 55sScotty KilmerYouTube · Feb 14, 2022
How to check and change

• Consult your owner's manual: This is the most reliable source for your specific vehicle's recommendations. 
• Visual check: Some reservoirs are clear, allowing you to check the fluid's color and condition at a glance. You can also use a turkey baster to draw a small amount of fluid out of the reservoir for a closer look. 
• Professional service: A mechanic can perform a thorough inspection and replacement. 

This video demonstrates how to check your power steering fluid using a turkey baster and discusses electric power steering systems: 58sScotty KilmerYouTube · Dec 19, 2017

What happens if you don't change your power steering fluid?

If you don't change your power steering fluid, it can become contaminated with dirt and moisture, causing increased friction and wear on the system. This can lead to symptoms like whining noises and difficulty steering, and ultimately result in expensive component damage such as a failed power steering pump or a damaged rack.
 
What happens when power steering fluid isn't changed

• Fluid contamination: Over time, the fluid breaks down and can collect debris, dirt, and moisture. This contaminates the fluid, turning it into an abrasive substance that can damage the system. 
• Increased friction: Contaminated fluid loses its ability to properly lubricate the components, causing friction that wears them down over time. 
• System wear: The contaminated fluid circulates through the hydraulic system, causing premature wear on components like the power steering pump and seals. 
• Symptom development: As the fluid degrades, you may notice symptoms like: 
  • Whining or groaning noises: from the power steering pump. 
  • Difficulty steering, especially at low speeds or when parking. 
  • Steering wheel vibrations . 

Consequences of neglecting the fluid

• Pump failure: A contaminated pump can fail prematurely, and replacing it can cost hundreds of dollars. 
• Seal and hose damage: The abrasive particles can cause seals and hoses to leak or fail, leading to further problems. 
• Complete system failure: In the worst-case scenario, a neglected system can fail completely, leading to poor steering response or a complete loss of power assist, which could be dangerous. 

How to prevent these issues

• Check the fluid level and condition regularly. 
• Change the fluid according to your vehicle's maintenance schedule, or every 3 to 5 years as a general guideline. 
• If you notice any of the signs of degraded fluid, have it changed to prevent more expensive repairs down the road. 

How much does it cost to replace power steering fluid?

A power steering fluid flush typically costs $100 to $200 at a shop, but can be as low as $90 to $125 depending on the vehicle. The cost can be lower if you do it yourself (around $10 for fluid). Factors like your car's make and model, local labor rates, and the specific service (like a simple top-off vs. a full flush) all influence the final price. 
This video demonstrates the process of flushing power steering fluid: 55sClassic Car MaintenanceYouTube · Jun 20, 2025
Professional service

• Average cost: Most sources cite an average price between $90 and $200 for a professional power steering fluid flush. 
• Range: Some estimates range from $100 to $215. 
• Factors: The final price depends on the make and model of your car, your location, and the specific service (e.g., a full flush vs. a simple top-off). 

DIY (Do-it-yourself)

• Fluid cost: The cost of the fluid itself is low, usually around $10 per quart.
• Total cost: Your only cost is the fluid and basic tools you may already own.
• Consideration: You'll need to research the correct type of fluid for your vehicle to avoid damage. 

What influences the cost?

• Service type: A complete flush, which removes all old, contaminated fluid, costs more than simply topping off the fluid. 
• Vehicle make and model: Certain vehicles may require more specialized or expensive fluids or labor. 
• Labor rates: Mechanic labor rates vary by location. 
• Contamination: If the old fluid is very dark or has contaminants, a full flush is recommended, which increases the cost.