While winter in Michigan can be fun for some people, others not so much. Many people dread the cold, and if your car heater is not working, it can make the experience even worse. If your vehicle stops blowing warm air, it can be due to any of the following mechanical issues:
Damaged Thermostat
A faulty thermostat is one of the most prevalent causes of heater failure. It may be stuck open or closed, and either way, the damage can extend to the engine's cooling system.
Low Antifreeze
The second most common problem is low antifreeze. When your coolant levels diminish, it won't be able to move towards the heater core, and thus, your cabin remains cold. It also puts your vehicle at risk of overheating.
Faulty Heater Fan
The heater fan, the component that transfers heat into the cabin, can break or suffer an electrical short.
Broken Blower Motor
If the blower motor is broken, you might have issues setting the fan speed. In worst-case scenarios, you might not get any airflow at all.
Clogged Heater Core
While this is a more uncommon problem, debris and dust that make their way into the coolant system can clog your heater core. You may either need a heater core repair or replacement altogether.
Leaky Radiator
A punctured radiator could stop coolant from reaching your heater core and harm your engine if left unnoticed.
Inadequate HVAC Controls
All those car buttons, dials, or touchscreens connected to your HVAC system may not be triggering the heating process. It's best to have a professional mechanic repair these issues.
Faulty Wiring or Blown Fuses
Similar to defective HVAC controls, your vehicle's wiring could be broken or have a short. A technician with electrical experience should be able to diagnose and repair this problem with ease.
A broken heater in the winter can make your winter commutes miserable. If you notice that your car heater isn't blowing warm enough or at all, please bring your vehicle to Alma Tire Service for repairs.