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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 593 (Information Center - Instrumentation, Message Center, And Warning Chimes) >> Description And Operation >> Information And Message Center >> Component Description >> Steering Wheel Switch - Message Center

Steering Wheel Switch - Message Center

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

The message center switch portion of the LH steering wheel switch is comprised of 5 buttons. Each button operates a unique switch within the overall switch assembly with each button using a different resistance value. The SCCM sends out a reference voltage to the LH steering wheel switch on the input circuit and monitors the voltage drop when a message center switch button is pressed. The voltage drop varies depending upon the resistance of the specific button pressed, indicating to the SCCM which switch is pressed.

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