Posts Tagged: HVAC blower won’t turn off

Why Your Blower Motor Runs When Car Is Off

What Causes a Blower Motor to Run After the Car Is Off Quick summary When a blower motor runs when the car is off, the problem is almost never the fan motor itself. In my experience, it’s usually a failed electronic blower motor controller that’s still feeding power or ground after key-off. This is a design quirk, especially on GM and Ford vehicles with automatic climate control—and it can drain a battery overnight if you don’t address it quickly. If you have a vehicle with an automatic climate control system … Read More