This AI-generated draft has not been independently verified for your vehicle. Confirm engine, trim, build date, tool fitment and torque specifications against the relevant service information before buying tools or starting work.
The XA50 RAV4 has no transmission dipstick. On the 2.5L gas cars the UA80 8-speed is filled from a plug on the side of the case and the level is set by an internal overflow tube, which only reads correctly when the fluid is between roughly 40 and 45°C. That means you need a scan tool that shows transmission fluid temperature — an infrared gun on the pan is a sanity check, not a substitute. Hybrids use an eCVT transaxle that takes the same ATF WS but is refilled by measured quantity rather than by overflow.
The tooling is simple: a 24 mm socket, a 6 mm hex bit, a 10 mm hex bit, a transfer pump and new crush washers. The thing people get wrong is the car not sitting level, or checking the level when the fluid is still hot from the drive. Both give a wrong reading, and on these units an incorrect level shows up as shudder and flare on light throttle. Second most common mistake: draining first and only then discovering the fill plug is seized.
| Item | Type | Product search |
|---|---|---|
| Floor jack 2 ton minimum Lift the RAV4 to get under it; the vehicle must end up level. | Required | search retailer |
| Jack stands 2 ton pair, or four stands/ramps Support the vehicle level front-to-rear and side-to-side, which is essential for an accurate fluid level. | Required | search retailer |
| Socket set 10 mm and 12 mm, 3/8 in drive Removes the plastic engine undertray and splash shields covering the transmission pan. | Required | search retailer |
| Trim clip tool Plastic panel/clip removal set Pops the push-in clips on the undertray without breaking them. | Recommended | search retailer |
| Ratchet 3/8 in drive, plus short extension Drives all plug sockets and bits. | Required | search retailer |
| Socket for drain plug 24 mm 6-point, 3/8 in drive Removes the hex-head drain plug on the UA80 8AT pan and the side refill/fill plug. | Required | search retailer |
| Hex bit socket 6 mm hex, 3/8 in drive Removes the internal overflow tube plug inside the 8AT drain plug boss to set the level. | Required | search retailer |
| Hex bit socket 10 mm hex, 3/8 in drive Fits the hybrid transaxle drain plug and some refill plugs on the XA50. | Required | search retailer |
| Drain pan 8-10 quart low-profile Catches roughly 3-4 liters of hot ATF plus overflow. | Required | search retailer |
| Fluid transfer pump Hand/lever pump with long flexible hose, or pump-top quart adapter Pushes new WS fluid uphill into the side fill plug — there is no dipstick or top fill point. | Required | search retailer |
| Infrared thermometer Non-contact, 0-200°C Cross-checks pan temperature while you wait for the 40-45°C level-check window. | Recommended | search retailer |
| OBD2 scan tool Must display transmission fluid temperature PID (Techstream, OBDLink, Carista, etc.) The 8AT level check is only valid inside a narrow ATF temperature range, which you cannot guess. | Required | search retailer |
| Torque wrench 3/8 in drive, 10-80 ft-lb Plugs thread into an aluminum case — overtightening strips them. | Required | search retailer |
| Toyota ATF WS 5 quarts for a single drain and fill; 10-12 quarts if doing repeat drains The only approved fluid for the UA80 and the hybrid transaxle. | Parts | search retailer |
| Drain and fill plug gaskets Toyota crush washers/O-rings for drain, overflow and fill plugs Single-use aluminum washers; reusing them is the usual cause of seeps. | Parts | search retailer |
| Brake cleaner and rags Cleans the pan area so you can spot any leak after the refill. | Consumables | search retailer |
| Nitrile gloves ATF at 45°C is hot and it soaks into skin. | Safety | search retailer |
| Safety glasses Fluid drips and runs down your arm when you pull the overflow plug overhead. | Safety | search retailer |
| Wheel chocks Engine must be idling in Park during the level check while the car is raised. | Safety | search retailer |
2.5L gas (A25A-FKS) cars use the UA80E (FWD) or UA80F (AWD) 8-speed: 24 mm hex-head pan drain plug, 6 mm hex internal overflow plug, 24 mm side fill plug, roughly 3.5-4 L per drain and fill out of an 8.8-9.6 L total. Hybrids use the THS eCVT transaxle: drain plug typically a 10 mm internal hex, refill by measured quantity (about 3.5-4 L) with no idle overflow check. AWD hybrids also have a separate rear eAxle that takes hypoid gear oil, not ATF.
| UA80 8AT pan drain plug | verify in the service manual (roughly 15-20 ft-lb into aluminum — do not overtighten) |
| UA80 8AT overflow tube plug (6 mm hex) | verify in the service manual |
| UA80 8AT side refill/fill plug | verify in the service manual |
| Hybrid transaxle drain plug | verify in the service manual |
| Hybrid transaxle refill plug | verify in the service manual |
| Undertray bolts | hand tight, about 7 ft-lb (10 Nm) |
No. The UA80 in the 2019-2024 RAV4 is sealed and has no dipstick or top fill tube. You refill through a plug on the side of the case and set the level by letting excess run out of an internal overflow tube at 40-45°C fluid temperature.
Expect about 3.5-4 liters (roughly 4 quarts) out of an 8.8-9.6 liter total on the 8-speed, so buy 5 quarts of Toyota ATF WS to allow for overflow. Hybrid transaxles are similar at about 3.5-4 liters.
For the 2.5L gas 8-speed, yes — the level check is only valid in a narrow ATF temperature window, and you cannot judge that reliably without a live temperature reading. Any scan tool or app that displays the transmission fluid temperature PID will do; you do not need full Techstream.
Don't. The UA80 and the hybrid transaxle are specified for Toyota ATF WS, and the frictional properties of aftermarket multi-vehicle fluids are a well-known cause of torque converter shudder and harsh shifts in these units. Genuine WS or a fluid explicitly licensed for WS is the only safe choice.