Network Message Chart - Push Button Start: On

To enter ON mode, with a valid IA key inside the vehicle, press the start/stop switch for a minimum of one second without pressing the brake pedal. Once the BCM  and RFA  module indicate a valid IA key is present inside the vehicle and the BCM  has detected the start/stop switch input without the BPP  input (automatic transmission) or CPP  input (manual transmission), the BCM  activates the ignition and accessory relays. The BCM  also sends the ignition mode message to the other modules over the Medium Speed Controller Area Network (MS-CAN).

Once the ignition has entered ON mode, the indicator in the start/stop switch illuminates and the module controlled indicators in the IPC  momentarily illuminate to prove they are functioning correctly. For IPC  prove-out information,

Refer to: INSTRUMENT PANEL CLUSTER (IPC) - OVERVIEW .