Parts for your 2018 Toyota Vitz|yaris-Transmission filter

2018 Toyota Vitz/Yaris transmission filter — what’s fitted and how to service it

Technical references confirm the 2018 Toyota Vitz/Yaris uses a transmission filter depending on the gearbox fitted. For models with the Toyota K-series CVT (commonly K311/K313), Toyota’s Repair Manual (GSIC/RM, CVT section for K311/K313: Disassembly/Assembly) lists an internal “CVT oil strainer (Strainer Assy, Oil)” and magnets in the sump. The Toyota Electronic Parts Catalogue for NCP13#/NSP13# Vitz/Yaris also shows the strainer (e.g., 35330-0W020) as an internal service part. Toyota’s Maintenance Schedules don’t specify any routine replacement interval for this filter. Manual-transmission versions do not use a transmission filter at all.

On Vitz/Yaris models with the K-series CVT, the transmission filter is an internal strainer that protects the valve body and pump by catching fine clutch material and metal particles. It works alongside sump magnets and the cooler circuit to keep the fluid clean and the CVT operating smoothly. Because it’s internal, it isn’t treated as a regular, driveway-service item. Instead, routine servicing focuses on fluid condition and temperature-correct fluid level checks. That said, keeping on top of fluid quality dramatically reduces the workload on the strainer and prolongs transmission life.

For Aussie and Kiwi driving—lots of stop‑start, short trips, and the odd steep hill—many workshops recommend a CVT drain-and-fill around every 60,000–90,000 km, even if the book is quiet on intervals. Use the correct Toyota CVT fluid specified for the vehicle (typically Toyota Genuine CVT Fluid FE for K311/K313, always confirm by VIN/label/manual). Avoid pressure flushing, a measured drain-and-fill (often around 3–4 litres) with the temperature-based level set procedure is the safe way. When the pan is off—for example, if the fluid is badly discoloured or there are drivability concerns—clean the magnets, inspect debris, and only then consider replacing the internal strainer. Replacing the strainer is a workshop job, as it involves opening the transaxle and following the GSIC procedure, new seals, and precise torque specs.

Tell-tales that the filter and fluid need attention include delayed take‑off, flare or shudder, a high‑pitched whine, overheating warnings, or CVT performance DTCs. If any of these crop up, a proper inspection beats guesswork: scan it, check fluid colour/odour, and decide whether a pan service is enough or the strainer should be renewed. Manual‑gearbox Vitz/Yaris owners can relax here—no transmission filter is fitted on the manuals, just keep the correct gear oil fresh at sensible intervals.

• Use the correct Toyota CVT fluid and the temperature method for level setting.
• Avoid pressure flushes, do a measured drain-and-fill.
• Replace the internal strainer only if contamination or repair work warrants it.

Does a 2018 Vitz/Yaris have a transmission filter?

CVT models do—an internal CVT oil strainer plus sump magnets. It isn’t a routine service item. Manual-transmission versions don’t have a transmission filter.

How often should the transmission filter be changed?

There’s no scheduled interval for the internal CVT strainer. Focus on fluid quality and level, replace the strainer only when contamination is present or during repair/overhaul. Many workshops suggest CVT fluid drain-and-fill every 60,000–90,000 km for local conditions.

Which transmission fluid does it take?

Most 2018 Vitz/Yaris CVTs (K311/K313) specify Toyota Genuine CVT Fluid FE. Always confirm by VIN, under‑bonnet labels, or the owner’s manual before servicing.