How do I switch on the Bluetooth for the Kia Optima K5? Leah March 06, 2024 03:41 Updated Follow these steps below: Make sure the Bluetooth on your phone is switched on. Select "BT" on the infotainment screen. Select "Connect". You're paired! Do note that not all phone models work for the Kia Optima K5’s Bluetooth connection. Related articles How do I adjust the seat for the Kia Optima K5? How do I charge an Electric Vehicle (EV) via the GetGo app? How do I switch on/off the headlights for the Ssangyong Actyon? Where is the parking brake on the Kia Optima K5? Where is the parking brake on the Honda Vezel 3rd Gen?