I knew the cold weather will make my tire pressure go down , I was gonna add more air to it . Well the tire pressure sensor faulty light came on . I check all tire pressure and add little more air . All good . I try did the reset for the TPS . By press the emergency switch 3 time and heard the horn . Then try to train my left front tires all the way around , when loose air out my left front tires , I don’t heard the horn , that made me think my left front tire pressure sensor battery is dead , tires still good and pressure is fine , can I still drive like this for few week until I get it fix .The light on the dash still on .