Tire Pressure Monitoring System (TPMS) for many car will monitor tire pressure and alert you when your tires have low tire pressure. When the TPMS warning light alerts you to low tire pressure. You will need to reset it. Learn how to reset TPMS warning light with this step-by-step guide with TPMS Reset Guide App. Use App: 1. You select Make/Model/Year. 2. See step by step guide.