Question about 2004 Hyundai Elantra

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2004 elantra heater control only operates at #4 setting

2004 elantra heater control only operates at # 4 setting.

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If # 4 is the highest fan setting it might be the resistor pack that controls the fan speeds.For each speed increase the fan switch takes a resistor out of the resistor loop The highest speed is a direct connection to the battery. The switch is usually located very close to the fan since it gets quite hot and needs to be cooled by the fan.It is also generaly accessible from under the hood,but not always.Sometimes it is under the dash Hope this helps.

Posted on Dec 09, 2008

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The Fan control Knob on you heating system needs to be replace. The only problem is that it comes in one piece. There is a resister inside of that switch that controls the fan sppeeds and it shot, so you need to rplace the heating/ Cooling control unit. Good Luck

Posted on Dec 08, 2008

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16ad4e6.jpg
def318e.jpg The facia has several 'clips' which pop loose when you pry it out.

cba91a1.jpg As you can see, there are four (4) screws in the environment control module. Reassembly is in reverse order.

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