- Coolant level: Make sure the coolant level in your car is full. If the coolant level is low, the heater core will not be able to circulate hot water and heat the car.
- Thermostat: The thermostat is a device that regulates the flow of coolant to the heater core. If the thermostat is stuck closed, the hot coolant will not be able to circulate to the heater core and heat the car.
- Heater control valve: The heater control valve is a device that controls the flow of hot water to the heater core. If the heater control valve is stuck closed, the hot coolant will not be able to circulate to the heater core and heat the car.
- Heater core: The heater core is a device that transfers heat from the hot coolant to the air that flows through the vents in the car. If the heater core is clogged or damaged, it will not be able to transfer heat to the air and heat the car.
If you have checked all of these things and the heat in your car is still not working, you may need to take it to a mechanic to have it diagnosed and repaired.
