Sturdiness and Durability:Comes with upgraded chip, and made of premium engineering materials to support anti-fall quality, and function is the same as the factory original car key, includes 5-buttons as remote control features lock, unlock, panic, remote start, open the truck. Powerful battery and sensitive buttons ensure for a long operation lifeReplace OE: Compatible with FCC ID: M3N5WY7777A. P/N: 25943677, 25943676. This Keyless Entry Remote Car Key Fob has been rigorously tested to comply with domestic strict standards for quality and durability. It comes with Electronics and Battery Pre-InstalledProgramming:DIY programming is NOT available. This proximity smart key fob is necessary to be programmed by a professional dealer or locksmith. NOTEThis smart car key only supports Push Start Button Vehicles, It doesn't support Regular Key VehiclesCompatibility:The Key Fob Transmitter Replacement for Cadillac CTS 2008 2009 2010 2011 2012 2013 2014 2015, Cadillac STS 2008-2011NOTEBefore purchasing this order, please check the description or use the year/make/model drop down bar to confirm the compatibilityPackage Include: 1x Keyless Entry Remote Car Key Fob. 18-Months-WarrantyBuy with confidence, if you find they don't work or any problems, please reach out to us regarding any concerns, and we will be happy to assist you