As per the subject, I am unable to scroll through the onboard computer settings. I am talking about the display that shows range, fuel consumption, etc. The display itself is absolutely fine. The issue has been present since I purchased the car about two years ago, but I just thought maybe I could do something to fix it now. At present it is stuck on the range (and has been like this for the past two years). Is it likely that the buttons on the wiper stalk that control the computer are faulty? The wiper settings work fine. I was considering if it is likely that replacing the stalk will fix the issue. Any thought or advice are very welcome.

I'd say you're probably right either your assumption. You could also get a diagnostic test to see if any fault codes flag up