No key detected car will not crank

Hello, if there is "no key detected" it means that the battery in the key fob is in need of replacement, or there is a concern with the relationship of the key to the vehicle that needs to be checked into. A key should never "lose" programming, so if the keys present are the ones always used and are not working, replace the battery in it first before anything else. Further, testing will be required to see what is going on. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops