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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1496 (Steering Wheel And Column Electrical Components (Except Electric)) >> Description And Operation >> Steering Wheel and Column Electrical Components - System Operation and Component Description >> Component Description >> Push Button Ignition Switch

Push Button Ignition Switch

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

The push button ignition switch is a momentary dual contact switch that is hardwired to the BCM and the PCM.

Both sets of contacts are normally open and receive voltage at all times. When the push button ignition switch is pressed, one set of contacts supplies voltage to the BCM only. The second set of contacts supply voltage to the BCM, RFA module and the PCM.

The push button ignition switch has a LED that is used for switch illumination.

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