Upshift Indicator Light

All Cherokee and Wrangler vehicles are equipped with an upshift indicator light (arrow up symbol), but light is only functional on vehicles equipped with a manual transmission. Upshift indicator light is located at right upper side of instrument cluster. Light is controlled by PCM, which turns on light to inform driver when to shift to next higher gear for best fuel economy. PCM determines which gear should be used by observing and remembering RPM and MAP values.