Originally Posted by
Disco-tastic
For some people a 'failure to proceed' is a flat tyre. They've never (had the capacity or interest or) learnt how to change one, or how to safely use a jack. They just call roadside assist.
If you have any interest in saving your bacon when touring to any remote places, then you should have some interest in the basic workings of your vehicle, whether it be new or old. A scan tool isn't that expensive nor hard to use to fault find, and even if you dont have the capacity to fix the issue yourself, you at least have some idea of whats wrong when you're calling around to find a mechanic to work on it.
Even just knowing what a 'hard reset' can solve all sorts of problems...