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Unread 07-30-2013, 12:56 PM   #16
shawnicles
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2008 KK Liberty 
 
Join Date: Nov 2012
Location: Calgary, AB
Posts: 302
I called Hypertech just because of my issues with the traction control being disabled and the light staying on always. He was pretty informative and mentioned that the Hypertech programmer is doing what it was designed to do. When I added the bigger tires, before the jeep didn't know they were bigger and were just running like the tires were stock which in turns makes the speedo slightly off. When I entered the bigger tires into the programmer, then the Jeep computer became aware of this, fixed the speedo issue however, the size of the tires are out of spec for the esp and traction to work properly so the computer turns it off.

Stock tires I was told on a Jeep Sport North Edition are 235/75/R16's right? So at 60mph 245's will show 2mph faster then what the speedo is registering.

He basically said that I need to keep dropping the tire size from 245 (30.50 inch) down a quarter or half inch until the computer recognizes the tires within spec and it will go away. So i'll give that a try tonight when i'm home. 235 tires are 29.5 inches so if it doesn't go away at 30 inches then I'll just run stock and know that at 60mph i'm actually going 62 which isn't a big deal at all to me personally.

Does that esp explanation seem logical to any of you other guys/gals?

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Unread 07-30-2013, 01:49 PM   #17
Ted15
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2010 KK Liberty 
 
Join Date: Jun 2011
Location: Akron, Ohio
Posts: 516
I ain't buyin it. The dealer calibrated my speedometer for the larger tires with no issues and when my 4.10's were installed, 4 wheel parts calibrated it as well. I didn't have any lights and nothing shut off. The stability control would slightly engage occasionally but that was about it. I haven't seen the little traction control light since the trutracs were installed either.
It seems they have a problem with the programmer to me. Hopefully they sort it out, I really want one of those things.
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Unread 07-30-2013, 02:47 PM   #18
shawnicles
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2008 KK Liberty 
 
Join Date: Nov 2012
Location: Calgary, AB
Posts: 302
Im going in for an oil change on Thursday, so i'll bring it up with my contact there that helps me with a lot of stuff and see what he thinks.
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Unread 07-30-2013, 07:03 PM   #19
Gageraid
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2008 KK Liberty 
 
Join Date: May 2012
Location: Branchburg, New Jersey
Posts: 1,270
Quote:
Originally Posted by shawnicles View Post
I called Hypertech just because of my issues with the traction control being disabled and the light staying on always. He was pretty informative and mentioned that the Hypertech programmer is doing what it was designed to do. When I added the bigger tires, before the jeep didn't know they were bigger and were just running like the tires were stock which in turns makes the speedo slightly off. When I entered the bigger tires into the programmer, then the Jeep computer became aware of this, fixed the speedo issue however, the size of the tires are out of spec for the esp and traction to work properly so the computer turns it off.

Stock tires I was told on a Jeep Sport North Edition are 235/75/R16's right? So at 60mph 245's will show 2mph faster then what the speedo is registering.

He basically said that I need to keep dropping the tire size from 245 (30.50 inch) down a quarter or half inch until the computer recognizes the tires within spec and it will go away. So i'll give that a try tonight when i'm home. 235 tires are 29.5 inches so if it doesn't go away at 30 inches then I'll just run stock and know that at 60mph i'm actually going 62 which isn't a big deal at all to me personally.

Does that esp explanation seem logical to any of you other guys/gals?
Remember to roll down your windows before you connect the programmer if you wanna enjoy fresh air during the programming.

I have heard about people suggesting this so give it a try... I'd be pretty annoyed if I were you, but just keep googling and I'm sure you'll find some better answers.
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