Hi SSD,
That is not really on.
You can expect more use out of any of the fine products of the Garmin stable than a mere 24 months.
I would point this out in a well worded letter and explain that you understand that the warranty is only 12 months but that you would expect a reputable company like them to look after their customers better.
I take it that the thing just died without any damage done to it or anything else which they can say was due to misuse by you?
After all these things should just go on and on and on as there are no serviceable items in them and no wear and tear on electronics other than may be the display.
Certainly worth a letter to appeal to their better nature rather than just sit back an pay up.
FD