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2007 Hyundai Sonata Question: HVAC blower runs when car is turned off

 

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geek4tech, 6 Cylinder, Aberdeen, MD, March 19, 2010, 11:50
 Rookie

I was attempting to replace the bulb in my 07 Sonata's dome light. After installing a new bulb, I pressed the ON button and the bulb shorted and started smoking. The fuse assigned "memory" under the dash blew. I replaced the fuse and then noticed that the HVAC blower was running while the car was off. Even the little electronic display for the HVAC controls was on. I can control the blower speed and even turn it off. It will just stay on if I don't manually turn it off. Any ideas? Blower relay or resistor? Does anyone know where this is located?

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, March 19, 2010, 17:55
     Master

    When you have fuses blowing and smoke from the electrical system, it indicates a short circuit somewhere, and this can cause all sorts of odd problems, like the one you are experiencing. I would focus on isolating and fixing the short that blew the fuse, and checking for diagnostic codes in all the control modules.

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