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Old 06-05-2013, 06:14 PM
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Tire pressure dash light

Today I replaced the stock 225/75/16 tires and wheels on our 2013 Wrangler with ones off our 2012 which were 255/75/17. For some reason the dash pressure sensor light now comes on although all four tires are at 35 PSI. Is there something that must be re-set in the computer?

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Old 06-05-2013, 07:54 PM   #2
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I don't think 2012 and 2013 TPMS systems are compatable. But, even of they are, it will take at least 20 minutes of driving above 15 MPH at or above the correct tire pressure to reset the TPMS warning light.

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Old 06-05-2013, 08:01 PM   #3
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The 2012 and 2013 TPMS are on a different frequency and won't work with each other.
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Old 06-06-2013, 09:39 AM
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Originally Posted by Mevman View Post
The 2012 and 2013 TPMS are on a different frequency and won't work with each other.
Thanks! I was afraid of that. Well just ordered another AEV Procal to shut off system. Why do they do this stuff?
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Old 06-06-2013, 10:50 AM   #5
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Thanks! I was afraid of that. Well just ordered another AEV Procal to shut off system. Why do they do this stuff?
The Federal Gov't and the "We know how to keep you safe better than you do" mentality.

The Procal will not shut off the light or disable the TPMS, it only allows you to lower the pressure that triggers the light on (example 26 psi vs. 32 psi). The TPMS is a gov't required safety system - these cannot be shut off.

Only way to stop the light from coming on is to take the sensors out of the wheels that were on the Jeep and put them in the new wheels off of the 2013.
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Old 06-06-2013, 11:09 AM   #6
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The Federal Gov't and the "We know how to keep you safe better than you do" mentality.

The Procal will not shut off the light or disable the TPMS, it only allows you to lower the pressure that triggers the light on (example 26 psi vs. 32 psi). The TPMS is a gov't required safety system - these cannot be shut off.

Only way to stop the light from coming on is to take the sensors out of the wheels that were on the Jeep and put them in the new wheels off of the 2013.
That's not correct, at least according to the ProCal instructions. First three dip switches up, the remainder down will disable TPMS.

http://www.aev-conversions.com/pdf/i..._Reference.pdf

As I understand it, TPMS laws vary from state to state. Federal law simply requires that all new vehicles be equipped with it, but different states have different views on whether or not it needs to be functional.

Wheel Tech - State TPMS Regulations
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Old 06-07-2013, 07:25 AM
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That is correct. I have done it with my 2012. Tabs are 3 up and remaining down will bring criteria to -0- PSI effectively shutting off system.

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