Parts for your 2002 Daihatsu Terios-Transmission filter

2002 Daihatsu Terios transmission filter: fitted, what it does, and when to service it

For the 2002 Daihatsu Terios equipped with the 4‑speed automatic, a transmission filter is indeed fitted — it’s an internal oil strainer mounted above the transmission pan. This isn’t an external spin‑on type. Technical sources supporting this include the Daihatsu Terios J100/J102 workshop manual (Automatic Transmission section) which details the oil strainer and pan removal, the Daihatsu Electronic Parts Catalogue listing for the automatic transmission oil strainer on J1‑series Terios models, and Aisin service literature for period 4‑speed automatics that specifies a pan‑mounted, serviceable screen. Note: manual‑transmission Terios models don’t use a transmission filter.

On the auto Terios, the transmission filter (oil strainer) is there to catch clutch material, fine metal, and other debris so the ATF can keep doing its job — lubricating, cooling, and providing hydraulic pressure for smooth shifts. Over time, the strainer can load up and the fluid can degrade, which shows up as harsher or delayed shifts, shudder, or a bit of flare between gears. Keeping the strainer clean and the ATF fresh helps the old girl shift sweetly and extends transmission life.

Service-wise, there’s no external filter to swap on the driveway. It’s a pan‑off job: drain the ATF, drop the pan, clean the magnets, replace the strainer and pan gasket, then refill and set the level hot with the engine running. The correct ATF for early‑2000s Daihatsu automatics is typically Dexron III — always check the owner’s manual or workshop data for the exact spec. A straightforward drain‑and‑fill usually replaces a few litres, a complete overhaul gets the rest. If the vehicle’s history is unknown, a gentle approach is best: avoid power flushing, start with a pan service and fresh fluid, then recheck shift quality.

• Recommended practice: inspect/replace the strainer whenever the pan is off, and renew ATF roughly every 60,000–100,000 km in normal use (earlier if towing, lots of city stop‑start, or off‑road work).
• Watch for signs like dark or burnt‑smelling ATF, shift flare, shudder, or delayed engagement. These are cues to book a service.
• Parts are inexpensive, expect about 1–2 hours of labour. Always use a new pan gasket and torque the bolts correctly to avoid leaks.

For manual Terios models, there’s no transmission filter — just change the manual gearbox oil at the specified interval.

Does a 2002 Daihatsu Terios have a transmission filter?

Yes — on the automatic versions it uses an internal oil strainer above the pan. It’s serviced during a pan‑off ATF service. Manual models don’t have a transmission filter.

How often should the Terios transmission filter be replaced?

Replace the strainer whenever the pan is removed, and pair it with fresh ATF about every 60,000–100,000 km. Severe conditions (towing, heavy city use, off‑road) justify shorter intervals. If the fluid is very dirty or shift quality is off, bring the service forward.

What ATF does it take and how much will I need?

The auto typically specifies Dexron III ATF. A drain‑and‑fill will return a few litres, a full rebuild fills more. Always confirm the exact spec and capacity in the owner’s manual or workshop data and set the level hot, engine running, on level ground.