Parts for your 2009 Toyota Fortuner-Transmission filter

2009 Toyota Fortuner transmission filter

Yes, a transmission filter is relevant to a 2009 Toyota Fortuner with an automatic gearbox. Toyota fitted an internal, in-pan transmission oil strainer (often called a filter) to the Aisin automatic transmissions used in this model range, such as the A340E/A343F and, in some markets, the A750F. Manual Fortuner models don’t use a transmission filter. This is supported by Toyota’s workshop procedures for the Fortuner/Hilux AN60 platform, which include steps to remove the “Automatic Transmission Oil Strainer” after dropping the pan, and by the Toyota Electronic Parts Catalogue, which lists an “Oil Strainer, Automatic Transmission” (p/n series 35330-xxxxx) for these gearboxes. Aisin service literature for the A340/A750 family also specifies an internal strainer and pan magnets.

On the 2009 Fortuner automatic, the transmission filter’s job is simple but critical: it screens out clutch material and fine debris so the hydraulic circuits and solenoids can do their thing without drama. It sits just above the sump pan, working with the pan magnets and Toyota ATF WS fluid to keep the shift quality smooth and extend the life of the transmission.

Servicing-wise, Toyota treats the strainer as a long-life part. It’s not a routine, every-service item like an engine oil filter. Most owners will only replace it when the pan is off for other work (like fixing a leak), during a deeper service, or if there are symptoms of contamination. A sensible plan for Aussie and Kiwi conditions is to refresh Toyota ATF WS on a time-and-use basis—every 60,000 to 100,000 km if towing, off-roading, or doing lots of city stop–start—and replace the strainer and pan gasket roughly every 150,000 to 200,000 km, or sooner if the drained fluid is dark/burnt or the pan magnets are loaded up.

Best practice when the pan is down:

• Clean or replace the in-pan strainer and fit a new pan gasket.
• Thoroughly clean the pan and magnets, inspect for excessive metal.
• Refill with genuine-spec Toyota ATF WS and set the level using the temperature/overflow method per the repair manual.

Technical references: Toyota Fortuner/Hilux AN60 Repair Manual (Automatic Transmission—A340E/A343F/A750F sections: oil pan and oil strainer removal/installation), Toyota Electronic Parts Catalogue entries for “Oil Strainer, Automatic Transmission” (35330‑xxxxx), and Aisin AW service information for A340/A750 series transmissions.

Popular questions

Does a 2009 Toyota Fortuner have a serviceable transmission filter?
Yes—if it’s an automatic. The 2009 Fortuner auto uses an internal in-pan strainer that can be accessed by removing the transmission sump. Manual versions don’t use a filter.

How often should the transmission filter be replaced on a 2009 Fortuner?
It isn’t a frequent replacement item. Many techs replace it when the pan is off or at major services around 150,000–200,000 km. If the vehicle tows, sees heavy off-road work, or the ATF looks burnt or dirty, bring that forward and replace the strainer when changing the fluid.

What are the signs of a clogged transmission filter?
Delayed engagement, flare or harsh shifts, shudder under light throttle, or a whining pump can point to restriction. Dark, burnt-smelling ATF and pan magnets loaded with fuzz are also clues the system needs attention.