2009 model year · 0+ owner reports · Updated April 2026
According to Au7o's analysis of 0+ owner reports, the 2009 Nissan Pathfinder has 3 documented known issues, with 1 rated critical. The most serious is Radiator/Transmission Cooler Mixing (SMOD) ($300-$5,000 repair). Across all issues, repair costs range from $200 to $5,000. DIY maintenance guides at au7o.io.
On the 2005-2010 Nissan Pathfinder, the 2005-2010 Pathfinder shares the same radiator design flaw as the Frontier and Xterra. The internal transmission cooler within the radiator can develop cracks, allowing coolant to mix with ATF. This causes catastrophic transmission damage often called "Strawberry Milkshake of Death" (SMOD) due to the pink frothy appearance of contaminated fluid. Typically occurs between 60,000-100,000 miles.
Prevention: Install an external transmission cooler and bypass the internal radiator cooler ($150-300 DIY). If SMOD has occurred: flush the transmission multiple times, replace the radiator, and install an external cooler. If transmission is already damaged, replacement costs $3,000-5,000. Many owners proactively replace the radiator with an aftermarket unit that has no internal trans cooler.
Parts and tips from 0+ owners who fixed this issue
On the 2001-2012 Nissan Pathfinder, the cast iron exhaust manifolds on VQ35DE and VQ40DE equipped Pathfinders are prone to cracking due to thermal cycling. The passenger side manifold is most commonly affected. Cracks cause an exhaust leak that produces a ticking noise on cold starts that may diminish as the engine warms up. Over time the crack worsens and the leak becomes constant.
Replace the cracked exhaust manifold. OEM manifolds tend to crack again; many owners opt for aftermarket headers or upgraded manifolds. Replacing exhaust manifold gaskets at the same time is recommended. Cost: $400-900 at an independent shop.
Parts and tips from 0+ owners who fixed this issue
On the 2005-2012 Nissan Pathfinder, the R51 Pathfinder is prone to rust developing around the rear liftgate, particularly along the bottom edge and around the license plate area. Water gets trapped behind trim pieces and the spare tire well can also rust through. This is especially common in northern/salt belt states but occurs nationwide. The issue is caused by inadequate drainage and corrosion protection in the rear body panels.
Early stage: Sand affected areas, apply rust converter, prime and repaint ($200-500 DIY or $500-1,200 at body shop). Advanced rust: Panel replacement may be required ($1,500-3,000). Preventive measures include keeping drain holes clear, applying rust inhibitor spray annually, and checking behind rear trim panels for trapped moisture.
Parts and tips from 0+ owners who fixed this issue
ENGINE AND ENGINE COOLING
NISSAN IS RECALLING CERTAIN MODEL YEAR 2011 INFINITI FX, MODEL YEAR 2012 INFINITI M, MODEL YEAR 2011-2012 NISSAN FRONTIER, MODEL YEAR 2011-2012 NISSAN XTERRA, MODEL YEAR 2011-2012 NISSAN PATHFINDER, AND MODEL YEAR 2012 NISSAN NV VEHICLES. SOME OF THE BOLTS THAT CONNECT THE ENGINE OIL COOLER AND THE ENGINE OIL FILTER TO THE ENGINE IN THESE VEHICLES MAY HAVE BEEN MANUFACTURED TO BELOW SPECIFICATION STRENGTH. AS A RESULT, THE BOLT MAY BREAK AT THE OIL FILTER ATTACHMENT POINT AND CAN CAUSE AN ENGINE OIL LEAK.
SUSPENSION:FRONT:HUB
Nissan is recalling certain model year 2012 Frontier, Pathfinder, and Xterra two-wheel drive vehicles manufactured from June 19, 2012, through July 12, 2012. These vehicles may have been equipped with front wheel hubs that may not meet the design hardness specifications. A wheel hub that was manufactured below hardness specification may wear prematurely and eventually crack.
AIR BAGS:FRONTAL
Nissan North America, Inc. (Nissan) is recalling certain 2008-2011 Titan, Frontier, Xterra, Pathfinder, Armada, and 2008-2009 Quest vehicles. The resin emblem on the driver's air bag cover may develop cracks and detach during air bag deployment.
SUSPENSION:FRONT:CONTROL ARM:LOWER ARM
NISSAN IS RECALLING CERTAIN FRONT AND REAR LOWER LINKS, P/NOS. 54501ZQ00A, 54500ZQ00A, 551A1ZQ00A, 551A0ZQ00A , 54501EA00A, 54500EA00A, 551A1EA500, 551A0EA500, 54501ZR00A, AND 54500ZR00A, SOLD BETWEEN NOVEMBER 25, 2009 AND MAY 14, 2010 AS REPLACEMENT PARTS FOR MODEL YEAR 2004 THROUGH 2010 TITAN, ARMADA, AND QX56, AND MODEL YEARS 2005 THROUGH 2010 FRONTIER, XTERRA, AND PATHFINDER VEHICLES. THE LOWER CONTROL LINK ASSEMBLY HAS TWO CYLINDRICAL COLLARS FORMING THE INBOARD ATTACHMENT POINTS TO THE CHASSIS. DUE TO AN IMPROPER WELDING PROCESS SOME COLLARS MAY CONTAIN WELDS THAT DO NOT MEET STRENGTH SPECIFICATIONS.
STEERING:GEAR BOX:SHAFT SECTOR
NISSAN HAS NOTIFIED NHTSA OF A DEFECT IN CERTAIN MODEL YEAR 2010 FRONTIER, PATHFINDER, AND XTERRA VEHICLES MANUFACTURED FROM FEBRUARY 22, 2010 TO MARCH 13, 2010. ON SOME OF THE POTENTIALLY AFFECTED VEHICLES, THE FASTENERS SECURING THE PASSENGER FRONT AIR BAG MODULE, AND ALSO THE FASTENERS SECURING THE STEERING SHAFT POSITIONING BRACKET MAY NOT HAVE BEEN TIGHTENED TO THE PROPER TORQUE SPECIFICATION.
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According to Au7o's analysis of 0+ owner reports, the 2009-2009 Nissan Pathfinder has 3 documented issues. The most frequently reported are: Radiator/Transmission Cooler Mixing (SMOD), Exhaust Manifold Cracking, Rear Hatch and Liftgate Rust. Of these, 1 is rated critical and should be addressed promptly.
The 2009-2009 Nissan Pathfinder has 3 known issues documented across 0+ owner reports. 1 issue is rated critical: Radiator/Transmission Cooler Mixing (SMOD). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Nissan Pathfinder issues range from $200 to $5,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Radiator/Transmission Cooler Mixing (SMOD), typically costs $300-$5,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The 2005-2010 Pathfinder shares the same radiator design flaw as the Frontier and Xterra. The internal transmission cooler within the radiator can develop cracks, allowing coolant to mix with ATF. This causes catastrophic transmission damage often called "Strawberry Milkshake of… Repairs typically run $300-$5,000. Severity: high.
The cast iron exhaust manifolds on VQ35DE and VQ40DE equipped Pathfinders are prone to cracking due to thermal cycling. The passenger side manifold is most commonly affected. Cracks cause an exhaust leak that produces a ticking noise on cold starts that may diminish as the engine… Repairs typically run $400-$900. Severity: medium.
The R51 Pathfinder is prone to rust developing around the rear liftgate, particularly along the bottom edge and around the license plate area. Water gets trapped behind trim pieces and the spare tire well can also rust through. This is especially common in northern/salt belt stat… Repairs typically run $200-$3,000. 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.
