The Hybrid Transmission May Fail Prematurely on Toyota Prius

The hybrid transmission may fail prematurely. Our technicians recommend changing the transmission fluid every 30K miles in order to help prolong transmission life. There is a small square pan on the bottom of the transmission which should be removed to allow more fluid to drain. This service recommendation is over and above the Toyota recommendation to "check" the transmission fluid every 30k miles.

RepairPal Verified
Average mileage: 113,250 (63,000–145,000)
7 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007
10 people reported this problem
3 people shared problem details
2005 Toyota Prius127,000
Our transmission is slipping or cutting out after driving for about an hour. We also experience rapid alternation of acceleration and deceleration, as if it's jerking on its own. We have the triangle problem light also. We took it to the dealer three times and each time they tried something different but the light is still on constantly. We have not sought a mechanic for the transmission problem. The car is great for short trips and we are planning to keep it but not as our primary car.
Prius was towed to dealer, I was advised today that drive train and transmission needed replacing to the tune of $5500.00. Service Consultant stated that this is "uncommon".
2007 Toyota Prius118,000
transmission slipping
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