Parts for your 2008 Toyota Vitz|yaris-Transmission filter

2008 Toyota Vitz/Yaris transmission filter

Technical references confirm a transmission filter is relevant on most 2008 Toyota Vitz/Yaris models that aren’t manual. Toyota’s Electronic Parts Catalogue lists an “Oil Strainer, Automatic Transmission” for the 4‑speed auto (Aisin U340E/U341E), and the Toyota Repair Manual (Automatic Transaxle section) shows the strainer under the pan. Aisin service documentation for the U340 series details the same mesh strainer and pan magnets. For CVT‑equipped JDM Vitz (K410/K411 and related Toyota CVTs), Toyota service literature specifies an internal strainer and, on some variants, a replaceable external fine filter. Manual gearboxes don’t use a transmission filter at all. So, a transmission filter is fitted and relevant for auto and many CVT versions of the 2008 Vitz/Yaris, it isn’t applicable to manuals.

On the 2008 Vitz/Yaris with the 4‑speed auto, the transmission filter (strainer) sits inside the sump and catches larger debris so the fluid can circulate cleanly. Think of it as the first line of defence for the valve body and solenoids. Over time, clutch material and fine metal can build up. While Toyota doesn’t set a strict change interval for the strainer, it’s smart to replace it any time the pan is off, or if there are symptoms like delayed engagement, harsh or flared shifts, or murky, burnt‑smelling ATF.

For CVT models, there’s always an internal strainer and, depending on the exact unit, there may be an external cartridge‑style filter in the cooler circuit. Where an external CVT filter is fitted, it’s good practice to replace it during a fluid service. The internal strainer is typically left until overhaul unless contamination is evident.

Fluid choice matters. The 4‑speed auto uses Toyota ATF WS. Most 2008 Toyota CVTs of this size use Toyota CVT Fluid TC. Sticking with the specified fluid is crucial for shift quality and longevity. When servicing, clean the pan and magnets, fit a new gasket, and torque pan bolts evenly. Level checks on these units are temperature‑sensitive, the overflow‑tube method and scan‑tool temperature readout (around 40 °C) are the right way to set the level.

Practical servicing tips:

• Auto (U340E/U341E): replace strainer when the pan is dropped, consider fluid service every 60,000–100,000 km in Aussie/Kiwi conditions.
• CVT: replace the external filter if fitted at fluid service, inspect fluid condition and magnets, leave the internal strainer for overhaul unless there’s evidence of debris.
• Manual: no filter, just follow the gearbox oil change guidance.

These practices align with Toyota workshop literature for the Vitz/Yaris, the Aisin U340E/U341E overhaul documentation, and the Toyota EPC parts listings for the applicable transmissions.

Popular questions

Does a 2008 Yaris/Vitz have a transmission filter?
Yes—if it’s an automatic or a CVT. The 4‑speed auto has an internal strainer under the pan. CVT versions have an internal strainer and some also have an external cartridge filter. Manual models don’t have a transmission filter.

How often should the transmission filter be changed?
Toyota doesn’t mandate routine strainer changes. For the 4‑speed auto, replace the strainer whenever the pan is removed, or around 150,000 km if you’re proactively maintaining it. For CVTs, replace the external filter (if fitted) during fluid services, the internal strainer is typically left until overhaul unless contamination is present.

Which transmission fluid does it use?
The 4‑speed auto uses Toyota ATF WS. Most 2008 Vitz/Yaris CVTs use Toyota CVT Fluid TC. Using the correct fluid and setting the level at the specified temperature is critical for proper operation.