The contact owns a 2006 Toyota Highlander hybrid. While driving 45 mph, the contact stated that the vehicle began to decelerate before stalling. The vehicle would not restart. The dealer diagnosed that the intelligent power module located in the engine was defective. The manufacturer was not notified. The vehicle was repaired. The failure mileage was 130,000 and the current mileage was 130,010.

- Manassas, VA, USA

The contact owns a 2006 Toyota Highlander hybrid. The contact stated that the engine would make a loud sound while driving, the check engine and hybrid system lights would illuminate on the instrument panel, and the vehicle would drive rough. The vehicle was taken to an authorized dealer, who stated that something was blocking the crank shaft and various pieces of the engine could possibly be out of place. A full diagnosis of the failure was not provided because the engine would have had to have been taken apart to do so. The manufacturer was made aware of the failure, but offered no assistance. The failure and current mileages were 87,000. The dealer informed the consumer the problem was related to the engine and not the hybrid system. It was determined a valve spring broke in the engine. Somehow, there was a weakening in the valve spring in the cylinder head that caused the valve spring to break and cause internal damage. Toyota stated the short block and both cylinder heads needed to be replaced. With new parts and labor, the estimated cost was $11,000. Updated 08/31/11 updated 9/16/11 updated 2/9/2012

- Tamarac , FL, USA

The contact owns a 2006 Toyota Highlander hybrid. While driving approximately 45 mph, the engine stalled without warning and would not restart. The vehicle was towed to an independent mechanic where they informed the contact that the hybrid inverter failed. The vehicle was not repaired. The failure mileage was 146,851. Updated 04/05/11

- Los Gatos , CA, USA

The contact owns a 2006 Toyota Highlander hybrid. While driving at 65 mph, the check engine and check vsf warning lights illuminated. The vehicle began to lose power. The contact was able to move the vehicle from the roadway where it was towed to a local dealer. The dealer performed a diagnostic and found general power inventor would need to be replaced. The vehicle was not repaired. The failure and current mileages were 144,000.

- Carthage, NY, USA

Upon acceleration the 2006 Highlander hybrid 2 wd suddenly and rapidly accelerated. This happened once in reverse and once in drive both times the vehicle was stopped at onset. It has not happened again thus far (2 days ago). The SUV was at the dealership yesterday where they could find nothing wrong. I am now aware that this has been an issue with Toyota's, esp the Camry, upon which the highlander is based.

- Tallahassee, FL, USA

2006 Toyota highlander 4WD hybrid stalled during left turn (in front of traffic) when traveling to work. Both the gas and electric engine stalled - I.e. I pushed the gas and nothing happened. Turned the engine off and restarted, and everything has worked well since (4 days).

- Pittsburgh, PA, USA