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Discussion Starter · #1 ·
Sometimes my V6 2010 Santa Fe won't start and if I continue to turn it over nothing happens. If I turn the ignition to off then try again it starts fine. Any suggestions?
 

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What happens if you wait with the key in the "On" position for about 5~10 seconds before you attempt to start? Does that resolve the problem?
 

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I can't tell from your profile where you're located but if you have a Canadian model, it could be the key chip sensor.

Mine (also 2010) has just started acting up; I'm waiting for it to be consistently bad so the dealer can reproduce the issue and replace the chip sensor. When it fails to validate the chip, the engine cranks but doesn't get fuel and therefore doesn't start. Taking the key out, turning it over and putting it back in usually does the trick - for now.

Of course if you don't have chipped keys, this won't apply to you! =)

-A
 

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@amckie
What you describe is also a possible sign of a slight loss of fuel rail pressure after the vehicle has been sitting. That's why I suggested that the OP wait just a few seconds between "On" and "Start" positions. Even a Santa Fe that's working 'normally' will sometimes balk at starting if the key is inserted and switched quite quickly to the "Start" position.
 

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Discussion Starter · #5 ·
canderson, I tried waiting 5-10 secs before turning over the engine with not better luck.
amckie, mine has the chip. I'm going to try using the wife's key and see if there is difference.
This problem seems to me to be electrical cause when I turn it over for 5 or so sec my Santa Fe does not fire or buck at all. Does anybdy notice the yellow key light on the dash when you first start the car. Mine is on till the engine starts, if it does not start the light stays on.
 

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Discussion Starter · #6 ·
I can't tell from your profile where you're located but if you have a Canadian model, it could be the key chip sensor.

Mine (also 2010) has just started acting up; I'm waiting for it to be consistently bad so the dealer can reproduce the issue and replace the chip sensor. When it fails to validate the chip, the engine cranks but doesn't get fuel and therefore doesn't start. Taking the key out, turning it over and putting it back in usually does the trick - for now.

Of course if you don't have chipped keys, this won't apply to you! =)

-A
Keep me posted with your problem cause I think I have the same trouble. Hopefully it's covered under warranty.
 

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The discontinued entourage vans in 2007 had a similar problem.

If I recall it turned out to be a relay that was integrated into one of the fuse boxes; fuse panel had to be changed as unit or electrical specialist could run wires to bypass ignition security system.

Warranty fix would involve new panel; hopefully I'm wrong and it's something simple.
 

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Scan the modules for fault codes.. Be interested if anything hiding in the immobilizer module, PCM or BCM,, just do a complete fault code search using GDS and see what come up.
 

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Discussion Starter · #9 ·
Scan the modules for fault codes.. Be interested if anything hiding in the immobilizer module, PCM or BCM,, just do a complete fault code search using GDS and see what come up.
Shouldn't the fault codes some up as a Check Engine Light?
 

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I have the same problem on my 2010 V6 AWD. Its very intermittent. The dealer replaced the antenna coil and it went away for a while but is happening again. No codes thrown. I'll mention the stuff above to the dealer.
 

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@amckie
What you describe is also a possible sign of a slight loss of fuel rail pressure after the vehicle has been sitting. That's why I suggested that the OP wait just a few seconds between "On" and "Start" positions. Even a Santa Fe that's working 'normally' will sometimes balk at starting if the key is inserted and switched quite quickly to the "Start" position.
That's interesting - though so far turning the key over and restarting quickly has been working for me. Next time it happens, I will try the ON-5s-START routine to see if it makes a difference before repositioning the key. Best to have the knowledge one way or the other before trying to get any work done.

-A
 
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