How often should coolent be changed - 2004 Toyota Prius

How much coolent in a vr 5L

The coolant must be changed at 100,000 miles, and then every 50,000 miles thereafter. Also, the coolant needed is quite specific for the Prius. As mentioned before, the coolant cools the engine, but ALSO cools the electronics in the inverter (the is the shiny silver box in the engine compartment in front of the driver). Also, there is a coolant storage bottle inside the left front fender that stores warm coolant to aid in starting the car. This being said, changing the coolant is best left to Toyota technicians that have expertise with replacing the coolant. If the inverter is not cooled properly, the unit will overheat and fail. The inverter is very, very expensive. Trust your Toyota technician with this job. The money that you may save is not worth the costs that you could incur if you do not bleed all of the air from the system. Also, make SURE that when you change the oil, use the EXACT weight oil that the car calls for. Ignoring the exact weight of oil will also cause you problems with how it drives.

Very important that you dont touch your coolant it must be done by the dealer unless you have a toyota computer tool. the coolant is a special type it not only cools you gas motor but it also cools your electric motor. and you have to use a computer scanner to turn on the water pump and get the air out before you start up your car or you will have a nice paper weight. as far as the time go with your dealers recommendation