Winter Tires & Tire Pressure Monitoring System
I have a 2012 Focus Titanium with the 18" factory rims. 10 days ago I installed winter tires on after market 16" steel wheels. I expected the TPMS light to come on (and stay on since I don't have TPMS sensors with my winter tires) but it did not. Only yesterday, 9 days later, did the TPMS come on. Today the light did not come on. I don't understand how the system works. I thought the light would remain on all the time.