My 2003 Santa Fe wont start. I turn the key and I have power but no starter engaging. They looked at my car two days later and the car started. They said it was probably a broken wire they found on the ignition harness.
Two days later the exact thing happened again. Hyundai said guarantee its the ground wire to the chassis. I told the mechanics this, but it sat for a week (they were busy ... not knocking them, they were busy). Anyway, they finally got it in to check. What I was told and before they even looked they tried the key and it worked!! They did check the ground cable and it was all corroded. Drove it home yesterday went to start it ... same problem again!!!