I have a 2007 grand Cherokee and I've been looking at replacing the key cylinder with a push button start. Specifically the ec004 rfid system from easyguard. My plan is to remove the key cylinder and replace it with this system. I also plan to dissect the control box for the system and find whatever goes hot when the rfid tag is authenticated and wire that to unlock the door. Any advice for the install or unlock plan would be appreciated.

 

I don't think Jeep ever offered a fully keyless access system on the WK (2005-2010) Grand Cherokee, however they *DID* offer the "FOBIK" System in 2008-2010 (with the larger keyfob that you stick into the slot in the dash), as well as offered the "Keyless Enter-'n'-Go" System on the WK2 (2011+) Grand Cherokee, so I'd try and get the complete system from one of those. The 2008-2010 system WON'T give you keyless access OR push-button start, but the 2011+ system will give you both. Not sure how it will work in a pre-facelifted (2005-2007) WK though.