Transaxle (Prius)

Drive vehicle until engine and transaxle reaches normal operating temperature. Park vehicle on level surface and apply parking brake. With engine idling and brakes applied, move gearshift lever through all positions ending in "P" position.
Raise and support vehicle. Carefully remove transaxle fill plug to check level. Fluid level should be within .2" (5 mm) of bottom of fill plug opening. See Fig 1. If fluid is low, fill with proper type fluid until fluid is level with fill plug opening. See RECOMMENDED FLUIDS . DO NOT overfill.

Fig 1: Checking Transaxle Fluid level (Prius)