The Tech Webasto mobile app is an effective tool to quickly identify, troubleshoot or maintain any Webasto product. This tool gives product specifications to help identify which product you have installed. It also provides fault code information to diagnose our Thermo Heaters with the fault code reference guide. Diagnose, troubleshoot, repair or maintain any Webasto product all from this app. Webasto Thermo & Comfort North America’s Tech Webasto app is an essential tool for any Webasto service technician.