2923. Option Mode 2You can make option change easily by looking at icons ondisplay.Button I Option Button II Icon0 Start Time 15 mins ↔ 25 mins1 Turbo Time 30 sec ↔ 2mins2 Siren Dunation 30 sec ↔ 60 sec3 Preheating Time 4 ↔ 7 ↔ 10 ↔ 151) When you press the button I for 5 seconds, the sirenchirps and the parking lights flash once each.2) Please press the button I for 0.5 second to move toanother option3) Please press the button for II for 0.5 second to changethe option setting4) Please press the button for III for 2 seconds to save thechange. The siren chirps and the parking lights flashonce each if the change is saved safely.24. Car battery voltage checkPlease press the button IV for 0.5 second to check carbattery voltage. It appears every other time after inside cartemperature.