I took my new 2011 to the dealer as this is definitely not the way a remote start should work. They said the same as others have posted on this site. Can't be changed...
Well it can. Doing so will bypass the MyKey Feature of the used key. So if you are concerned about it you can set the remote start key to a restricted key. This will leave the car in the restricted mode when it is started using MyKey.
Here is the way to change it: This was posted by another user (Mustang46) on another forum.
It is easily programmed to change this behavior. You can do it at home. You can change the run time to 15 minutes and turn off the horn chirps at start, if you want.
To change the stop engine "feature", you need to set option 7 in Bank 2...
http://techservices.codesystems.com/
This apparently is the supplier of the Ford remote start systems. Just create a Login and then click Ford at the top of the page. The PDF that you are looking for is titled
'PROGRAMMING - GEN2 BRONZE WITH OR WITHOUT "MYKEY"'. It details the programming process.
Interestingly, there is also a document titled 'NEW 2010 MODEL YEAR SECURITY ENHANCEMENTS FOR MYKE', which is a memo to dealers stating not to reprogram this for customers even if they complain about the issue in this thread...
It only takes 4-5 minutes to do this.
The button you need to get into programming mode is located under your dash and is taped under there. Mine was close to the OBDC jack.