Toyota Repairing 650,000 Prius Models For Overheating

A faulty coolant pump that causes an overheating problem has triggered a recall of about 650,000 Toyota Prius models, most of them sold in the U.S.

The repairs cover the 2004 to 2007 model years. The flaw can cause the car to overheat and, ultimately lose power. Toyota said there are no safety issues involved in the action. It says it has received o reports of any accidents for injuries from the problem.

As part of the repair, Toyota will replace the coolant pumps in affected vehicles. The pump design allows air bubbles to enter the system, with the result that the flow of coolant is slowed. With less coolant getting to vital engine parts, the systems begin to overheat.

The first indication that something is amiss is a dashboard warning light. Left unattended, Toyota said the engine will begin to reduce power to protect itself.

Owners of affected models should expect to begin hearing from Toyota throughout December. They will be instructed where to take their cars for the needed repairs.

Toyota said it would cover the cost of the repairs, with includes the new pump and more than $100 in labor.