Push Button Ignition Switch
The push button ignition switch is used to control the ON, OFF and START ignition modes.
The BCM monitors one circuit for voltage from the ignition switch and sends a voltage signal on a second circuit to the ignition switch to monitor requests to turn the ignition on, off or to start the vehicle. When the button is pressed, one circuit routes battery voltage to the BCM while the voltage signal from the BCM on the second circuit is routed to ground, indicating a request to change the ignition state. Changing the ignition state from the OFF mode works in conjunction with the PATS. A programmed key is required to change the ignition from OFF to ON. For additional PATS information, Refer to: Passive Anti-Theft System (PATS) - System Operation and Component Description .
Refer to the following table for information about achieving the various ignition states.
| Ignition Entry Condition | Desired Ignition Mode | Action To Take |
|---|---|---|
| Off | ON (engine off) | Press the START/STOP button without applying the brake pedal. |
| Any ignition mode | START | Apply and the brake pedal and then press the START/STOP button. |
| On (engine off) | OFF | Press the START/STOP button. |
| On (engine running) | OFF | Press and hold the START/STOP button. |
The BCM must recognize a programmed key before it changes the ignition state from OFF.