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I have a 2017 Jeep Grand Cherokee Summit. All standard stuff: no modifications. Lately, I have been getting a warning notification on my dashboard that the driver side front tire should be inflated to 36 psi. Problem is that both front tires are inflated to 33 psi and both rear tires to 36 psi which is what the tag by the front door stated they should be. My local tire shop did a "relearning" of the TPM sensors, and the warning still appears. (See attached picture).

My question is this: what holds the data that tells the sensors what the pressure should be in any given tire position? And how can I check if that was changed to expect 36 instead of 33 psi?

Thanks!
Wheel Tire Car Vehicle Automotive design
 

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I don't think anything hold data. It responds to the sensor inside the tire. If it is reading false, you probably need a new sensor. However, bear in mind in am not an expert on the new models
 
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