How do I control the lights from my phone? Open the WEBER CONNECT app and tap on Grill Controls, then move the knobs to the on or off position. Related articles How do I use the night time grill lighting? What should I do if the knob lights don’t turn on after I press the button? Why am I noticing a quick blink when turning the knob lights on? Where is my serial number? Do I have to plug in my grill to use the WEBER CONNECT app?