The "Eyeball" in the lower grille isa radar sensor for the ACC/FCW. When I bought my Jeep GC used the ACC/FCW wouldn't engage with the dash warning of service system. Turns out there are mounting bushings for the radar sensor and a few were damaged.. I have a 2017 r/t Durango and the acc/fwc limited functionality continues to pop on the.. The ACC (Adaptive Cruise Control) and FCW (Forward Collision Warning) systems are integral components of modern vehicles, designed to enhance driving safety. However, when the screen displays the "ACC/FCW Limited Functionality" message, it indicates that there's an issue preventing these systems from operating optimally.
Don't panic if you see the "ACC/FCW Unavailable Service Required" warning. There are many potential causes for its appearance. But the majority of them are simple to fix. Test them out first. You can then go to your dealership. The following is a list of typical causes for the "ACC/FCW Unavailable Service Required" warning: 1. Dirty.. "ACC/FCW limited functionality service required" Jump to Latest 17K views 12 replies 5 participants last post by KL1988 May 8, 2020. KL1988 Discussion starter. 45 posts · Joined 2018 Add to quote; Only show this user #1 · May 8, 2020 (Edited.