The phrase "white illumination" refers to the brightness or lightness that comes from a white light source. It means having a clear and bright light that helps you see things more clearly. Full definition
Also new for 2015 is white illumination for instruments, a somewhat subtle change. (autoweek.com)
The keys are highlighted by white illumination through the letters, and slightly around the edges, which can be seen in most interior lighting conditions. (digitaltrends.com)
Other bits that notch up the upmarket quotient include the premium looking instrument panel with carbon finish and silver accents, reworked air - con vents, new triple analog sporty meter with white illumination etc.. (auto.ndtv.com)