tire pressure light on

I don't have any slow leaks, I do have newer tires (about two months ago) all of a sudden my low pressure light started flickering then went on. I checked all tires at the dealership and there's no problem. When I start the car the light flickers then stays on. Used to happen in winter and finally would go out. Doesn't go out now. Any trouble shooting techniques I can use?

is the "Flickering" like On-Off-On-Off-On-Off-On Steady, or is it a random flickering like it gets brighter then dimmer?

flickers on/off then stays on and never goes out. Only flickers when you first start car but does it each time you start car.

Its possible you need a new sensor.

I have seen them damaged with tire replacement. I am not sure of a "reset" procedure, look in the manual for that one.