Picked up a screw in my front left tire last week. Had Discount Tire plug, patch and swap the front and backs. So now i have a plugged left rear. Had that done on Friday, TPMS light came on this morning (Tuesday). Checked pressure, currently it is consistently 30-31 psi all around.

What do you guys think?

 

they could have broken it and didn't tell you, or they forgot to put it back on.

 

I did put about a 100 miles on it between friday and tuesday, thats why i'm not so certain if it was them.

 

30-31 psi should not tigger the TMPS, it goes off when it hits lower than 27 and over 37, I think

If it keeps loosing air, I will go back and like *wtf dude*, they probably messed up something, or the Valvesterm could be broken(or not tighten)

 

those TPMS are pretty fickle. it could be a broken valve stem or just about anything.

 

My light turned off yesterday on the way home from work. Hooray!

 

I had same problem with mine a couple of months back. I have to get the back tires replaced and i "forgot" to tell the shop about the sensors and they damaged one during the swap and didnt tell me about it or something. I got it checked out at the dealership to know what was wrong with it and when i found out i just went back to the autoshop and they were nice about it and fixed it.

Dont know what else it could be im not an expert on these mechanical issues.