Why Is My Car Heater Not Working? Common Causes & Fixes
A properly functioning car heating system is essential, not just for comfort, but for safety—especially during cold weather. A heater helps defrost windows, maintain cabin warmth, and keep you safe on icy roads. If your heater isn’t working, it can make driving uncomfortable and even dangerous. At Southern Tire & Auto Centers , we provide professional auto heating system repair to ensure your vehicle’s heater functions efficiently and reliably. Understanding the common causes of a malfunctioning heater and how to fix them can help you identify problems early. How Your Car Heater Works The car heating system works by using heat generated from the engine. Coolant circulates through the engine, absorbing heat, and then passes through a heater core , which functions like a small radiator inside the cabin. A fan blows air over the heater core and into the passenger compartment. The thermostat and blend doors regulate temperature, directing warm air where it’s needed....