I bought 4 of these for my Acura MDX because my TMPS light came on and stayed on. Brought her to Mr. Tires twice to replace. They replaced them but couldn't get them to work except for one. I paid $100 the first time, the second time it was a courtesy. Failed again. Then I took her to the Chevy Chase Acura. They charged a $165 diagnostic fee and said that apart from the right rear wheel, none of the others worked through programming or learning to drive. They say Dorman is an approved parts manufacturer, but a code is missing. So don't be smart with pennies and pounds like me.