* Blower motor: The blower motor is responsible for circulating air through the vents in your car. If the blower motor is not working, no air will be able to circulate and the heater and air will not work. Check the blower motor fuse and relay to see if they are blown or damaged. If the fuse and relay are good, then the blower motor itself may be faulty and will need to be replaced.
* Climate control module: The climate control module is responsible for controlling the temperature and airflow in your car. If the climate control module is faulty, it may not be able to send the correct signals to the blower motor, causing it to not work. Check the climate control module fuse and relay to see if they are blown or damaged. If the fuse and relay are good, then the climate control module itself may be faulty and will need to be replaced.
* Wiring: The wiring that connects the blower motor and climate control module to the power source may be damaged or loose. Check the wiring for any damage or loose connections and repair them if necessary.
If you are not comfortable troubleshooting these issues yourself, you can take your car to a qualified mechanic for diagnosis and repair.
