Parts for your 2014 Toyota Mark x-Transmission filter

2014 Toyota Mark X transmission-filter: what it is and how to look after it

For the 2014 Toyota Mark X (GRX13# series), a transmission-filter is absolutely relevant. This model runs an Aisin 6‑speed automatic (families A760E/A760F/A960E depending on variant), which uses an internal serviceable oil strainer (filter) inside the transmission sump, not an external spin‑on canister. This is documented in Toyota’s Repair Manual for the GRX13# Mark X (automatic transaxle section covering “Oil Strainer – Removal/Installation”), Aisin/ATSG service literature for the A760‑family, and Toyota’s Electronic Parts Catalogue, which lists an “Oil Strainer (AT)” and pan gasket for this vehicle.

The transmission-filter’s job is to trap clutch material, metal fines, and seal debris before they circulate through the valve body and solenoids. In the Mark X, that means smoother shifts, better solenoid control, and longer life for the 6‑speed auto—especially important with Toyota ATF WS’s tight viscosity targets.

Servicing this filter isn’t a quick roadside swap because it sits above the pan. It’s best handled during a scheduled fluid service or if there are symptoms like delayed engagement, flare on upshifts, shudder, or a contaminated magnet/pan. Many Australian and New Zealand workshops treat the filter as a replace‑when-needed item, but as a practical rule of thumb it’s worth replacing it when the pan is off—typically around 120,000–160,000 km or sooner if the fluid shows visible contamination. If the vehicle tows, sees lots of city heat, or has ever overheated the transmission, bring that forward.

• Always use Toyota ATF WS, mixing fluids can cause shift quality issues.
• Replace the pan gasket and strainer O‑ring, and clean the magnets while the pan’s off.
• After refit, set the fluid level by temperature using the overflow/level plug method at the specified ATF temp window (scan tool recommended) as per Toyota procedure.

Signs that the Mark X may benefit from a filter and fluid service include harsh or erratic shifts, delayed drive or reverse engagement, and dark, gritty ATF on the dipstick/overflow check. Left unattended, debris can score valves and stick solenoids, turning a simple service into a costly rebuild. Done right, a filter swap and fresh WS fluid can restore crisp, consistent shifting and keep this V6 sedan feeling tight for years.

Popular questions

Does the 2014 Toyota Mark X have a transmission filter?
Yes. It uses an internal oil strainer (filter) inside the transmission pan—there’s no external spin‑on filter. It’s replaced with the pan off during a service.

How often should the transmission-filter be replaced?
There’s no strict schedule in Toyota’s general guidance, but many local workshops recommend replacing the strainer when the pan is removed—often around 120,000–160,000 km, or earlier if fluid shows debris or shift quality declines.

What ATF does it take and how much is needed?
The Mark X requires Toyota ATF WS. A drain‑and‑fill typically takes about 3–4 litres, a full refill varies by variant and service method. Always set the level using the temperature‑based overflow procedure.