Icon for low tire pressure on dashboard. It keeps flashing off and on.

What is your question?

My tpms. Just recently started blinking off and on. After three to four hours. Last night. On 9-24-17 I checked the pressure in the tires in all of them. The tires were a little low. So I put the correct pressure in all of them, This morning I decided to check them again. I had to put air back in them. It is still flashing. Thank you for your help.

What makes this problem better or worse?

In my view. Nothing.

How long has your 2005 Toyota 4Runner had this problem?

4 days now.