It isn’t dangerous and doesn’t mean a recall but Toyota has discovered that, on some Priuses, the hybrid electric water pump can cause a loss of power. When this happens, the coolant temperature is too high and the Malfunction Indicator Light will illuminate.
Second generation Prius models made between August 2003 and May 2007 can be affected. However, vehicles with this problem are not unsafe and may still be driven; there are no reports of accidents or injuries associated with the problem.
In a customer satisfaction campaign, Toyota will fit a newly-designed water pump, at no cost to the customer. It is believed that approximately 15,500 UK-registered cars are affected by the campaign.