Automatic transmission drain and fill

Symptoms

The fix, step by step

1. With the truck level, remove the 24 mm refill plug first, then the 14 mm drain plug (about 5 qt comes out).
2. Drop the pan (20 × 10 mm bolts), replace the filter and O-ring, clean the magnets and fit a new pan gasket; pan bolts 62 in-lb, filter bolts 7 ft-lb.
3. Refill (Trail4R used 5.5 qt), then jumper OBD-II pins 4 and 13 to enter maintenance mode, cycle the shifter until the 'D' light stays solid, and check level through the 5 mm Allen check plug at 104–113 °F (solid D = in range, blinking = too hot).
4. Let it drip to a dribble, refit the plug at 15 ft-lb.

Tools & part numbers

• 10/12/14 mm and 24 mm sockets
• 5 mm Allen
• fluid pump
• jumper wire
• torque wrenches
• Toyota ATF WS 00289-ATFWS
• filter 35330-60050
• filter O-ring 90301-31014
• pan gasket 35168-60010
• plug gaskets (Trail4R and readers cite 35178-30010 for drain/check)

Where to buy the parts

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