After less than four years of ownership, and outside of the 3 year/36,000 mile warranty, the adaptive cruise control module(s) failed for no apparent reason, rendering the entire cruise control system inactive. the nature of the safety systems in volkswagens is such that if one system is not working, none will - thus, the 'front assist' collision avoidance system is no longer active, which is an integral part of the active safety technology in the touareg. in addition, basic speed modulation of conventional cruise control is also unavailable. the reliability of basic systems such as cruise control should not be contingent upon immensely expensive, and overly complicated technological components.