Features 1. Please confirm button pattern for proper fit, replacement for Cadillac CTS 20082013. 2. M3N5WY7777A is the reference part number, ensuring a perfect match. 3. Color, parameters, and specifications are customized based on the original factory design, offering sensitivity comparable to the original. 4. Frosted texture provides excellent hand feel for a pleasant touch experience. 5. Designed to original factory standards for direct replacement of old or damaged keys. Specification Item Type: Smart Key Material: ABS OE Number: M3N5WY7777A Chip: Built-in Purpose: Replacement, Spare System: BDC/CAS4/CAS4+ FEM Buttons: 5 (Car door lock, unlock, trunk release, panic alarm, remote start) Battery: CR2025 (included), 200mAh, built-in Fitment: Compatible with Cadillac CTS 2008, 2009, 2010, 2011, 2012, 2013 Package List 1 x Smart Key