You are able to program this smart key by yourself if you already have two working smart keys (or keys that start the vehicle). The programming instructions are very easy to understand and can be performed in less than 5 minutes. If you only have one working intelligent key for the 2009 LINCOLN MKS , the programming can only be done at a locksmith or dealership. There are no onboard programming instructions without 2 existing keys. This smart key comes with battery and is tested for functionality before sending.