2004 Hyundai Santa Fe cooling fans not coming on high with

Tiny
FRANKRP
  • MEMBER
  • 2004 HYUNDAI SANTA FE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 80,000 MILES
My engine ecm is not giving a gnd signal to cooling fan relays #1 and #2 to turn the fans on high with the a/c. Can you tell me if I can install a used computer without having to bring it to the dealer, would like to try it at least for t/s purposes. Warrantee over on ecm Hyundai telling me I have to bring it to them. Thanks Frank.
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Friday, September 3rd, 2010 AT 9:42 AM

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Tiny
DAVE H
  • EXPERT
A replacement computer needs to be reprogrammed i'm afraid. A dealer will have to do this for you. It could be a faulty engine coolant temp sensor causing the fault. Not giving correct signal to ECM
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Thursday, September 16th, 2010 AT 7:20 PM

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