Transmission Control Indicator Lamp (TCIL)
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The transmission control indicator lamp (TCIL) is located in the instrument panel and is labeled O/D OFF. The TCS controls the ON/OFF operation of the TCIL. When the driver initially presses the button of the TCS, the TCIL turns ON to indicate that transaxle operation in 4th gear is disabled. When the driver presses the TCS again, the TCIL turns OFF.