Volkswagen Jetta Heater Not Working
If your Volkswagen Jetta heater is not working, there are a few things you can check
Check the coolant level. If the coolant level is low, it can cause the heater to not work.
Check the heater hoses. If the heater hoses are cracked or leaking, it can also cause the heater to not work.
Check the thermostat. If the thermostat is stuck closed, it can prevent the coolant from flowing through the heater core, which will cause the heater to not work.
Check the blower motor. If the blower motor is not working, it will not circulate the air through the heater core, which will also cause the heater to not work.