Service TPMS with new wheels

[rob.stack1]

I just put new 18” wheels on my truck with 33’s on it. I went down from a 20” rim. I had my mechanic install the aftermarket wheels with oem sensors and the computer in my ram won’t read the tire pressure and says service tire pressure system. I’m at a lost what to do. I don’t have any codes thrown and don’t want to waste money at the dealership if I don’t have to. My truck is a Canadian truck, I’m not sure if that matters.

 

[JB1]

They should relearn within 20 miles of driving, hopefully he installed the correct sensors

 

[rob.stack1]

They installed oem sensors, the tpms light has turned off but now I’m just not getting a tire pressure reading in the cluster

 

[JB1]

I know different years use different p/n sensors, I bought the correct numbers for mine and had zero issues, they relearned within 2 miles of discount tire

 

[msnyder1112]

i'm having this same issue..
no idiot light, but TPMS are just dashes and it says Service Tire Pressure system.

All 4 new sensors are doing this. They are the same frequency.

I tried removing the battery, I tried the trip button trick... nothing

I've driven for probably 40 miles so far. half of which were highway speeds...

Any idea?