general problems of the 2009 Toyota Highlander Hybrid

Tl- the contact owns a 2009 Toyota Highlander Hybrid. The contact stated while driving 30 mph, she felt the a kluncking noise coming from the front end, the vehicle lost power and failed to accelerate or restart. The vehicle was towed to the dealer. The dealer immediately noted that the vehicle seemed to consume abnormal quantities of oil at that time of the failure. The contact had previously had a oil change one month and a half prior to the failure and the oil meter measured one quart of engine oil left in her vehicle. The dealer then ran the diagnostic however was unable to diagnose the failure. Several months after, the contact received notification of recall NHTSA campaign number: 13v396000 (hybrid propulsion system) however, after the dealer performed the revision the failure reoccured. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 125,000. The VIN was not available. Az.

We took the vehicle to the dealer in for a 5,000 mile service maintenance. After our service advisor looked over the vehicle he said we needed new set of tires as the current ones were at the wear indicators. Our service advisor also said our vehicle was in the open campaign (NHTSA campaign number: 13v396000) to replace the intelligent power module (ipm) in the vehicle hybrid system. The service advisor said it would take about four hours and there would be no charge. Since the replacement of the ipm the vehicle has experienced a significant drop in mpg. Before the replacement of the ipm the vehicle was averaging 26 - 27 mph in the city and about 30 mpg (29. 8 mpg highest) freeway driving. After the replacement of the ipm the vehicle is averaging 21 - 22 mpg in the city and 24-25 on the freeway. This is a 5-6 mpg decrease. We have been told by the dealer the replacement of the ipm has nothing to do with the mpg and it is because of the winter months our mpg has drop. I do not believe the winter months would have this much effect on the mpg. I have done some online research and found other owners having the exact same issue after their ipm was replaced.