BLIS (Blind Spot Information) is a camera-based information system that under certain conditions can help the driver to notice vehicles moving in the same direction as the host vehicle in the so-called "blind spot".
The system is designed to work most effectively when driving in dense traffic on multi-lane highways.
In order to work most effectively the BLIS camera lenses2 must be clean. The lenses can be cleaned with a soft cloth or damp sponge. Clean the lenses carefully so that they are not scratched.