Ambient Meter
The ambient meter is the ring of color around the speedometer. In Normal or ECON mode, it changes color based on data the ECM/PCM receives from various control units and sensors. The ECM/PCM calculates this data, forms an Eco drive profile, and then sends the profile to the gauge control module via F-CAN. When the gauge control module receives the Eco drive profile data, it responds by changing the background color of the speedometer. During low fuel economy, the ambient meter is blue; at medium fuel economy, the meter is blue-green; and at high fuel economy, it's green.
In Sport mode, the ambient meter color is red at all times, and the shift indicator lamp (SIL) stays off (M/T).