According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2005 Lexus RX has 3 documented known issues. No issues are rated critical, indicating generally reliable ownership. Across all issues with published estimates, repair costs range from $250 to $2,200. DIY maintenance guides at au7o.io.
Steering Intermediate Shaft Clunk and Loose Steering Feel Over Bumps
50K-140K
Rear Main Seal / Engine Oil Leak at Timing Cover and Lower Engine Seals
70K-180K
Power Steering Pressure Hose Leak and Pump Whine from Fluid Loss
80K-180K
050K100K150K200K mi
On the 2004-2006 Lexus RX 3.3L 3MZ-FE V6, rX330 owners frequently report persistent engine oil leaks that are often diagnosed at the rear main seal, timing cover area, or other lower engine sealing surfaces. The leak may start as minor seepage but can progress to oil spots on the driveway, burning oil odor, and contamination of the lower engine and subframe. Because access is labor-intensive, especially if the rear main seal is involved, repair costs can become substantial even when the leak itself is not immediately catastrophic.
Oil residue on lower engine or transmission bellhousing
Gradual oil level loss
Smoke from oil contacting hot exhaust components
How to Fix
Clean the engine thoroughly and use dye or UV tracing to identify the true source, since valve cover, timing cover, and rear main leaks can be misidentified. Repair involves replacing the failed seal or resealing the timing cover, often while addressing nearby components with overlapping labor. If the leak is minor, some owners monitor oil level until the leak worsens enough to justify the labor.
Owner tips & cautions
TipUse UV dye before authorizing a rear main seal job; several owners found the actual leak was higher up at the valve cover or timing cover.
TipIf transmission removal is required, owners often replace related wear items with overlapping labor to save money later.
On the 2000-2006 Lexus RX, both RX300 and RX330 generations commonly develop power steering fluid leaks, especially from the high-pressure hose and related line connections. Owners report red fluid on the driveway, groaning or whining while turning, and heavier steering effort as fluid level drops. If ignored, the pump can run dry and fail, increasing repair cost significantly.
Common Symptoms
Power steering fluid leak
Whining or groaning when turning
Heavy steering effort
Low fluid level in reservoir
Fluid on driveway or under engine cradle
How to Fix
Inspect the pressure hose, return lines, reservoir, and pump area for wetness, then confirm whether the leak is from the crimped hose section or a fitting. Replace the leaking hose or line assembly, refill with the correct fluid, and bleed the system fully; if the pump has been noisy for long, inspect for internal damage. Cleaning the subframe and alternator area is important because leaked fluid can spread widely.
Owner tips & cautions
TipOwners recommend replacing aging return hoses at the same time as the pressure hose if they are soft or sweating, since labor overlap is significant.
TipAfter repair, bleed the steering system with the front wheels raised to reduce pump cavitation noise.
On the 2004-2006 Lexus RX, second-generation RX330 models commonly develop a clunk or knock felt through the steering column, especially at low speed over small bumps or during quick steering inputs. Lexus issued service information for intermediate steering shaft noise, and owners often describe the sensation as a loose front end despite no obvious play in major suspension joints. The condition is usually caused by wear or lash in the intermediate shaft splines or joints rather than a catastrophic steering rack failure.
Front-end rattle with no obvious suspension failure
How to Fix
Road test over small road imperfections to reproduce the column knock, then isolate the sound from the shaft, rack mounts, and front suspension links. Replacement of the intermediate steering shaft is the usual fix; some vehicles also need inspection of rack bushings and front stabilizer links if multiple noises are present. An alignment is not always required but front-end inspection should accompany the repair.
Owner tips & cautions
TipOwners recommend confirming the noise source before replacing struts or sway bar links, because the steering shaft clunk can mimic suspension noise.
TipUse the updated Lexus/Toyota shaft part rather than a salvage-yard original to reduce the chance of repeat noise.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER
TOYOTA IS RECALLING CERTAIN MODEL YEAR 2005-2006 AVALON, MODEL YEAR 2004-2006 HIGHLANDER, MODEL YEAR 2004-2006 LEXUS RX, AND MODEL YEAR 2006 LEXUS GS AND IS VEHICLES. BRAKE FLUID CONTAINING POLYMERS IS USED THAT ACTS AS LUBRICANTS FOR CERTAIN BRAKE SYSTEM COMPONENTS. IF REPLACEMENT BRAKE FLUID IS USED THAT DOES NOT CONTAIN SUCH POLYMERS, OR THAT CONTAINS ONLY SMALL AMOUNTS, A PART OF THE RUBBER SEAL LOCATED AT THE REAR OF THE BRAKE MASTER CYLINDER MAY BECOME DRY, AND THE SEAL MAY CURL DURING MOVEMENT OF THE PISTON. IF THIS OCCURS, A SMALL AMOUNT OF BRAKE FLUID COULD SLOWLY LEAK FROM THE SEAL INTO THE BRAKE BOOSTER.
Campaign #10V49900021/10/2010
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2005 Lexus RX has 3 documented issues. The most frequently reported are: Rear Main Seal / Engine Oil Leak at Timing Cover and Lower Engine Seals, Power Steering Pressure Hose Leak and Pump Whine from Fluid Loss, Steering Intermediate Shaft Clunk and Loose Steering Feel Over Bumps. None are rated critical, but regular maintenance is recommended.
Is the Lexus RX reliable?
The 2005 Lexus RX has 3 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Lexus RX problems?
Repair costs for known Lexus RX issues range from $250 to $2,200, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2004-2006 Lexus RX Rear Main Seal / Engine Oil Leak at Timing Cover and Lower Engine Seals?
RX330 owners frequently report persistent engine oil leaks that are often diagnosed at the rear main seal, timing cover area, or other lower engine sealing surfaces. The leak may start as minor seepage but can progress to oil spots on the driveway, burning oil odor, and contamina… Repairs typically run $700-$2,200. Severity: medium.
What is the 2000-2006 Lexus RX Power Steering Pressure Hose Leak and Pump Whine from Fluid Loss?
Both RX300 and RX330 generations commonly develop power steering fluid leaks, especially from the high-pressure hose and related line connections. Owners report red fluid on the driveway, groaning or whining while turning, and heavier steering effort as fluid level drops. If igno… Repairs typically run $250-$900. Severity: medium.
What is the 2004-2006 Lexus RX Steering Intermediate Shaft Clunk and Loose Steering Feel Over Bumps?
Second-generation RX330 models commonly develop a clunk or knock felt through the steering column, especially at low speed over small bumps or during quick steering inputs. Lexus issued service information for intermediate steering shaft noise, and owners often describe the sensa… Repairs typically run $350-$900. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
