- thermostat stuck open. Replace thermostat;
- clogged heater core hose. Flush the radiator hoses and the radiator itself;
- clogged heater core. If the radiator fails to flush, replace it.
If air is not coming from the vents:
- turn on the ignition and blower. Listen to see if the fan motor is running;
- if the motor does not work, replace it.
If steam or an antifreeze smell comes out of the vents, the heater core is leaking and needs to be replaced.
![](https://www.toyotaman.ru/img/camry/0672.jpg)
Inspect the drain hose of the heater and evaporator unit to make sure it is not clogged.