A lot of the older 550's, mine included, had issues with the touch screen. I bought a refurb (which was essentially new) from Garmin, after 5 years of use, had the same problem with it out of the box, sent it back under warranty, and its replacement has worked well ever since. I think the two of them have lasted me almost 10 years and probably 200,000 km. I do have 2 cradles that I share among 3-4 bikes, which helps with the cradle issues.