The E170 Corolla has no transmission dipstick, on either the K313 CVT or the U340E 4-speed. You drain through a pan plug, pump new fluid in through a plug on the side of the case, then set the final level by letting fluid spill out of an internal overflow tube while the engine idles at a specific fluid temperature. That temperature requirement is why a scan tool that reads the transmission fluid temp PID is as important as the sockets.
The thing people get wrong is the fluid. The CVT takes Toyota Genuine CVT Fluid FE and nothing else; the 4-speed takes Toyota ATF WS. The second most common mistake is doing the level check with the car nose-up on ramps, which leaves the transmission overfilled or underfilled even though fluid dribbled out of the overflow. Get the car level on four stands.
| Item | Type | |
|---|---|---|
| Floor jack 2 ton minimum Lifts the car to reach the transaxle pan and fill plug. | Required | shop |
| Jack stands 2-3 ton pair, minimum 4 needed for level stance The car must be level and safely supported for the overflow level check. | Safety | shop |
| Socket set 10 mm socket, 3/8 in drive plus plastic trim clip tool Removes the engine/transmission splash undercover bolts and push clips. | Required | shop |
| Drain pan 6 quart minimum, wide Catches the old fluid and the overflow during the level set. | Required | shop |
| Socket for drain/fill plugs 24 mm 6-point, 1/2 in drive (some plugs take a 10 mm hex key) Opens the transaxle drain plug and the side fill plug. | Required | shop |
| Hex key / bit socket set 6 mm and 10 mm hex bit sockets, 3/8 in drive The inner overflow (level) plug inside the drain bolt is a hex socket type. | Required | shop |
| Breaker bar 1/2 in drive, 18 in Drain and fill plugs are often torqued tight and seized with sealant. | Recommended | shop |
| Fluid transfer pump Hand or lever pump with flexible hose that fits the side fill port Fluid must be pumped uphill into the side fill plug; you cannot pour it in. | Required | shop |
| Scan tool with transmission temp PID OBD-II scanner reading ATF/CVT fluid temperature, or Techstream The level must be set with fluid at roughly 100-115 F (CVT: Techstream fluid level check mode). | Required | shop |
| Torque wrench 1/2 in drive, 20-100 ft-lb range Aluminum case threads strip easily if plugs are overtightened. | Required | shop |
| Infrared thermometer -20 to 400 F Backup temperature check on the pan if your scan tool lacks the PID. | Recommended | shop |
| Drain plug gaskets Toyota crush washers for drain, overflow and fill plugs One-time-use aluminum washers; reusing them causes seeps. | Consumables | shop |
| Transmission fluid Toyota CVT Fluid FE (K313 CVT) or Toyota ATF WS (U340E 4-speed), 4-5 quarts Drain and fill takes roughly 3.5-4 qt on the CVT, 2.5-3 qt on the 4-speed. | Parts | shop |
| Brake cleaner and shop rags Cleans the pan area so you can see the plugs and spot leaks after. | Consumables | shop |
| Nitrile gloves and safety glasses Hot fluid drips from the overflow tube during the level set. | Safety | shop |
| Wheel chocks Keeps the car secure while it idles in gear ranges during the procedure. | Safety | shop |
All E170 Corollas use the 1.8 L 2ZR-FE or 2ZR-FAE, so the engine does not change the tools. The transmission does: the K313 CVT (LE, S, LE Eco) uses CVT Fluid FE and holds about 3.5-4 qt on a drain and fill, while the 2014-2016 L trim U340E 4-speed uses ATF WS and takes about 2.5-3 qt. Both use the same style of drain, overflow and side fill plugs, though the exact plug head (24 mm hex head vs 10 mm hex key) varies by build.
| Transaxle drain plug (CVT and 4-speed) | verify in the service manual |
| Overflow / level plug | verify in the service manual |
| Side fill plug | verify in the service manual |
| Engine undercover bolts | verify in the service manual (light, roughly 7-8 Nm) |
| Wheel lug nuts (if wheels removed) | 76 ft-lb (103 Nm) |
Plug sizes on the E170 vary slightly by build: the drain and fill plugs are commonly 24 mm hex head with a 6 mm hex inner overflow plug, but some units use a 10 mm hex key, so test-fit before you commit, and confirm all torque values in the Toyota service manual for your exact transmission.
No. Both the K313 CVT and the U340E 4-speed in the E170 are sealed units with no dipstick or filler tube. The level is set through an internal overflow tube with the engine running at a specified fluid temperature.
About 3.5 to 4 quarts come out of the K313 CVT on a pan drain, out of roughly 6.9 L total. Buy 5 quarts of Toyota CVT Fluid FE so you have extra for the overflow-level step.
You need something that reads transmission fluid temperature so you can set the level in the correct window. Techstream is ideal because it has a dedicated CVT fluid level check mode and resets the fluid deterioration counter, but a decent OBD-II scanner showing the ATF temp PID will get the level right.
Toyota calls it lifetime fill under normal use and lists inspection only, but most techs recommend a drain and fill every 30,000-60,000 miles, sooner for towing, heavy stop-and-go or hot climates. Repeat drain and fills are the safe way to refresh a CVT; avoid high-pressure flushes.