Heater fan blower works only on setting 4 and no aircon this symptom is (usually) caused by the blowing of the thermal fuse in the fan motor control resistor pack. There are many reasons for poor heating performance in focus, which are explained in this article Just the other day my a/c stopped working
Could this be the blower resistor The heater in ford focus ensures comfortable temperature in the passenger compartment when the weather is chilly Or is this another issue?
First, check the coolant levels in your car and ensure they are at the appropriate level according to your vehicle’s manual. To flesh out my issue, i have 2007/2008 ford focus which slowly and incrementally lost blow on the different blower settings I have seen youtube videos which say that i need a new heat resistor. Troubleshooting heater issues in a ford focus when troubleshooting heater issues in your ford focus, begin with the most straightforward checks to quickly identify potential problems
Start by allowing your vehicle to reach its normal operating temperature, as this is crucial for the heater system to function correctly. If your ford focus’s heat only works when driving, there are five leading causes you should check They are low coolant, air pockets, a bad heater core, an airlocked cooling system, and a malfunctioning thermostat A bad thermostat is the most common.
