SATELLITE navigation is available as an option in the CLK range and requires the fitment of the "COMAND" (Cockpit Management and Data) system that includes a colour LCD screen in the centre console. Certain sat-nav controls can be made via the buttons mounted on the steering wheel. Route maps and instructions can be called up by pushbutton, enabling the driver or front passenger to pinpoint and program a destination. A TV tuner can also be connected. Navigation CD-ROMs covering all Australian capital cities and inter-linking routes are available.