One problem related to brake sensor has been reported for the 2009 Jeep Patriot. The most recently reported issues are listed below.
My abs, esp bas, and traction control lights went on on my dash showing that my vehicles safety features are disabled. I had just had the sensor module that controls these lights replaced back in December 2015 at an expense of $1266. Now 7 months later and 6000 miles later the system is not working again. The dealership will not cover the repairs again under warranty and claim I will have to pay again to have the repairs made. Who know how long this repair would last as the Jeep parts are obviously defective and their are many more complaints on-line about them. There is no doubt that there are a lot of Jeep owners driving around with their safety controls disabled because they can not afford these costly repairs. . . Or can not afford to pay for them more then once! Jeep should have to honor these repairs under warranty or recall the defective parts before someone gets killed!.