If the tire pressure warning light turns on and off, what does that mean?

On cold mornings, the warning light may illuminate and then extinguish as tire pressure increases due to driving or outside air temperature increases. Additionally, if the warning light goes on and off, a malfunction in the system is indicated by a blinking light (for a period of 60 seconds to 90 seconds). After blinking for the brief time, the warning light can remain on. You should then contact your dealer for a system inspection.