Oct 1, 2010 · Elder Discussion starter. 144 posts · Joined 2008. #1 · Oct 1, 2010. Pressed the key fob to unlock the Kuga today, nothing happened. After a few minutes pressing the fob, it finally worked. My question is? Can you start the Kuga with the key, as how do you go on if the fob battery goes flat, as there is no warning.