Check your owners manual. If you don't have one copy & paste this link. http://www.genuineservice.com/genuineservice/en/gloveboxresults
Check fuse if the blower is not working. If it is then replace your heater core. if its not then replace your fan switch.
If you look under the passenger side dashboard you will find the heater motor ,attached to the motor is a fuse,check to see if the fuse is connected , or just replace the fuse , it worked for me.
Replace fuse #36 in the inside fusebox.See "Related Questions" below for more
have you checked the fuse if so then you will need to replace the resistor for the blower hig and low dettings have you checked the fuse do you have 12 volts to blower if so then you will need to replace the resistor for the blower replace the blower motor
To change the fuse for the heater in a 2007 BMW 530i, first, locate the fuse box, which is usually found under the dashboard on the driver's side or in the engine compartment. Use the fuse diagram on the cover or in the owner's manual to identify the specific fuse for the heater. Carefully remove the old fuse using a fuse puller or pliers, and replace it with a new fuse of the same amperage. Finally, check that the heater is functioning properly before closing the fuse box.
there are two screws underneath the fuse side by side, 10 mil liter , unscrew them and pull fuse.
Your heater switch may not need to be replaced. The heater high position is controlled by a fuse under the hood. Until you find the fuse and replace it, your new switch will not work. JRR.
replace the heater core if that's not it start checking fuse
The 2007 Toyota Camry heater fan fuse can be found in the fuse box. The heater fan fuse will be at the bottom of the first column.
The fuse for the rear window heater on a Rover 220 diesel is typically located in the fuse box under the dashboard on the driver's side. You may need to refer to the owner's manual for the exact fuse number, as it can vary by model year. Make sure to check the fuse box cover for a diagram that indicates the specific fuse for the rear window heater. If the fuse is blown, replace it with one of the same amperage.
The 2000 BMW 528 heater fuse is located in the fuse box. The fuse box can be found in the engine compartment. The location of the heater fuse will be listed on the inside cover of the fuse box.
The fuse that is marked heater.