Hi everyone, im new here and need some help. I have a 2006 Sonata and the heater quit working. The blower dosent run in any setting, all fuses are good, and i noticed if i press the a/c button it dosnt light up blue anymore nor do the lights for outside air or recirculate air light up. Thanks

 

If it was just the blower fan that did not work then I would believe all the fuses could be good.
However, with the lights being out for the AC button and all the other buttons, I tend to believe something was missed
Would go check all the fuses again with a test light. If both sides of the test points on the fuse light up then fuse is good.
If only one side then fuse is blown. If not the fuses then would look at the relays
The next thing is to put power to the blower motor direct and see if the blower works or not.

 

I checked all fuses again and they are good. I swapped out each relay to make sure they were good. I then put 12v to the yellow wire at the blower and it came on. I tried it again and it came on again then went directly off and couldnt get it to come back on. Does anyone know what wire is the 12v into the heater/ac controls? 4555555

 

This is what I would suggest and here's why,
Do you have any means to verify that you have power coming to the blower motor? If you would , tell us what test equip you have available and we should be able to assist with it' use.

Disconnect the wiring to the blower motor. Then run power direct to the blower motor again and leave it connected for a minue or two..
From what you previously stated, it ran and quit. That tells us there is a problem with the motor itself and that may be why you can't find any other reason for it not to run.

When blower motors get tired,they either become intermittent or just won't run at all. Can we do this ?

 

Ok i ran 12v to the blower yellow wire again and it ran. Every time i hook the wire back up it runs fine actually it ran for about an hour today. I have a multimeter. I don't know if I mentioned it but the light for the AC will not come on even with the blower running and the outside air circulation and the inside air recirculation lights do not light up either. With the blower motor running I am able to select the fan speed on the dash and it does work. That seems to be the only controls on the dash that I can use

 

Fixed! So i went out and started pulling fuses and pulled the 2 that have the yellow clip around them and they looked good but i swapped them out with 2 other ones and what do you know it worked! So it just barely blew the fuse to where it looked good. Im happy now seeing how its about 10° here in ohio. Thanks for everyone's input!

 

I'm glad you found and corrected the problem.
I do , however, have some reservations.
Bare with me on this.
A fuse is to protect for an over current condition. For a fuse to be partially closed/partially open is a question of whether it was defective when installed or a temporary condition existed to bring the current up to the point of ALMOST melting the fuse What can cause that? Possibly a fault that will emerge again up the road, or possibly a poor connection at the fuse panel It's kinda like being a little pregnant, hard to accept.
Maybe it is all just coincidence . Lets hope that is all it was.

 

With the lights out on a few of the buttons, it indicated that (not always) a fuse was blown.
Glad you found it and updated us with the good news.
However, Hanky is right. Something caused it to blow.
Now it is just a wait and see if it goes out again in a relatively short time.
Well, good luck