[Reidy]

We have 2 keys that came with the discovery sport.
1 works on all levels.
The other one has had some issues lately, mostly involving the buttons don’t work at all. Proximity works fine. If you’re within 1 meter of the car no problem getting in and starting. But you can’t do anything on the key.

 

[drumrunner]

Have you tried changing the battery in the key? I never use my buttons, but I've noticed I have to be a little closer to my car for the proximity to work at times. I'm pretty sure it's just the battery needs changed. I would start with that, since it's the cheapest.