Toyota Sienna Service Manual: Automatic transaxle fluid

On-vehicle inspection

1. CHECK FLUID LEVEL

HINT: Drive the vehicle so that the engine and transaxle are at normal operating temperature.

Fluid temperature: 70 to 80°C (158 to 176°F)

(a) Park the vehicle on a level surface and set the parking brake.

(b) With the engine idling and the brake pedal depressed, move the shift lever to all positions from P to L and return to the P position.

(c) Take out the dipstick and wipe it clean.

(d) Put the dipstick back all the way.

(e) Take out the dipstick again and check that the fluid level is within the HOT range.

If the fluid level is below the HOT range, add new fluid and recheck the fluid level.

If the fluid level exceeds the HOT range, drain the fluid once, add the proper amount of new fluid and recheck the fluid level.

If there are leaks, it is necessary to repair or replace O-rings, FIPGs, oil seals, plugs and/or other parts.