My 2007 Prius has stopped producing cabin heat; the blower fan is working. I have no dash warning indicators. I am in an area where the are no Toyota dealers and need to drive 160 miles to home and shop. It has just turned cold. Any ideas why and if I am ok to drive to the shop?
Check all engine compartment fluids, especially the engine radiator. Remove the large black plastic cover to gain access to the engine radiator cap. If all fluids are good and you have no warning lights on then you should be OK to drive to the shop. The lack of cabin heat might be caused by a faulty valve which should allow hot engine coolant to flow to the cabin heater core.