Question about 2004 Hyundai Elantra
Either heater control valve stuck or blend door is stuck depends on if you have climate control or standard controls. Also make sure it full of coolant.
Posted on Apr 03, 2015
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Posted on Jan 02, 2017
The switch that runs the blower motor for air and heat sends the DC voltage through some big resisters when it isn't set on high. (On high it sends all the power to the motor.)
If the lowest speed doesn't work then one of the resisters has gone bad, or come disconnected. If more than 1 speed doesn't work then a differant resister has gone bad or disconnected. The power runs through each resister in series so the most common one to go bad is the second to highest speed. when this resister is bad thaen it will only work on the highest setting. Replacing the switch won't fix it. You will have to find the resister that is bad and replace it.
The resister bank is usually tucked up behind the dash where only a kid can focus his eyes, and contort himself enough to see it.
Once the resister is replaced it should run perfectly.
Posted on Aug 26, 2009
Hello Janet. Begin by removing the bulb again and cleaning the contact plus the end of the bulb with the eraser at the end of a common pencil. That alone may solve your problem. There is also a fuse. look in your manual to determine which fuse it is and replace it even if it looks ok. Finally, if these things do not solve your problem it may be the switch. If that is the case call an autoelectric shop and they will change it for you for a few dollars.
Posted on Nov 20, 2009
Testimonial: "Thank you so much! I cleaned it but I think the bulb is too small it flickers if I shift it bk & forth, its not touching both connecters. "
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