Four problems related to battery dead have been reported for the 2007 Toyota Prius. The most recently reported issues are listed below.
Hybrid battery failed. The battery is hyped as lasting the lifetime of your car. 7 years and 131k is not a lifetime in my opinion. If I lived or bought my car in CA, it would be covered under warranty. Because I live in alabama, it is not. Warranty should be standardized.
2007 Toyota Prius with 47k miles. It lost power while driving on the highway. The car barely made it to the side of the road. After a little while, it restarted. The warning lights indicated there was no gas but the tank was full. The screen also showed that the battery was dead. This is the second time this happened. The dealer says the car checks out.
2007 Toyota Prius. Consumer states vehicle is a lemon. The consumer stated she had numerous problems with the vehicle. The battery was dead, but tested good, the touch screen display was inoperable due to a loose connection at the rear of the multi display/ hatch area. A short wire was found. The battery died five more times due to a short. The headlight bulbs had to be replaced, due to them going out after driving for an hour. The hid module had an intermittent short.
Indicator lights flashed. Malfunction indicator lamp stayed on. At 2,644 miles, 12 v. Battery dead & replaced. I was told to keep the gas tank half or a quarter full or the reserve gas tank would cause the car to run on battery. The battery might have died because the car sat too long before it was sold/at 8,879 miles, I went in. After filling the gas tank & taking out the nozzle, gas spewed & bubbled out. The car stalled while driving slowly & while in park. Indicator lights flashed. The malfunction indicator lamp and master warning lights stayed on. It took 5 min. To turn off the car. I started the car. Those lights stayed on. I was told I left the "trunk door" open & ran down the battery. (not true. ) there is a gasket around the access hole and if a person "is a little bit off," the gas will regurgitate. (I was not " off" & did not top off the tank. ) they reprogrammed the computer. The gas tank had not been filled so I knew they did not fill the gas tank and try to recreate the situation as they said they would. I bought gas at a different pump. I stopped at a stop light. I could feel a loss of power in the car. When I pushed the gas pedal, the car would not move. I turned the car off and on 3 times before it would move. It crept slowly through the intersection as the traffic signal turned red. I took the car in at 8,936 miles. I was told if my problem is associated with the battery that was taken out of my car, it is not at repair person's responsibility because he did not touch my battery. When a battery is disconnected for a certain amount of time, if something is not reset, it could cause problems. Then, he said no trouble found/my car stalled and/or had a loss of power. I took it in at 9,014 miles. No trouble found. I was told that my problems could have been caused by a faulty gas pump overfilling my tank. The gas station is new. The manager said the pumps were inspected. If there were a faulty pump, everyone would have problems.