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Yes, this is normal. The fans will always come on when you turn on the A/C or Defroster. They may also come on in the city during stop and go driving if the engine gets hot enough. On open road driving they will normally not come on. To verify their condition, park the car and let it run with the A/C & defroster off. You will hear the fans come on after awhile as the temperture of the engine reaches the point at which the factory has set them to come on.

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Q: Cooling fans do not come on but the car doesnt over heat but if i turn on heater or air conditioner the fan both come on This is a 2003 Kia Sorrento is this normal?
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