VOFONO Key Fob Replacement for Cadillac CTS & STS 2008–2015/2008–2011 — 5-Button, Preassembled and Tested

If your original Cadillac keyless remote is lost, damaged, or no longer transmitting, this VOFONO replacement provides an affordable, factory-style option. It matches the FCC ID M3N5WY7777A and OE numbers 25943676/25943677, and arrives fully assembled and tested to ensure the transmitter works before it ships.

Will this remote fit my Cadillac model year?

This VOFONO key fob is designed specifically for Cadillac CTS model years 2008 through 2015 and Cadillac STS model years 2008 through 2011. Check the FCC ID or your vehicle’s original remote part number to confirm compatibility.

• Compatible with Cadillac CTS: 2008–2015
• Compatible with Cadillac STS: 2008–2011
• Matches FCC ID: M3N5WY7777A
• Equivalent OE numbers: 25943676, 25943677

What comes in the box and what condition is the remote?

The remote ships as a complete keyless entry unit that includes the electronic circuit board and a preinstalled battery. Each remote is brand new, unused, and tested for transmission prior to shipping, so you receive a ready-to-program unit.

• Complete assembled remote with PCB and battery
• Brand-new, never previously used
• Transmission tested before dispatch
• Includes all five standard buttons for lock/unlock and remote features

How do I program this key fob to my vehicle?

Programming procedures for Cadillac remotes can vary and sometimes require specialized tools or dealer-level access. Many owners choose a professional locksmith or dealership to perform cutting and programming to ensure the remote correctly pairs with the vehicle's immobilizer and remote entry system.

• Professional locksmith or dealer recommended for programming
• Programming may require vehicle-specific equipment or software
• Remote arrives ready to be programmed—no soldering required
• Keep original remote or VIN ready to assist the technician

What if I need help after purchase?

VOFONO provides customer support for questions about fitment, functionality, or shipping. If you encounter issues with the remote's transmission or need advice on the programming process, reach out for prompt assistance from their service team.

• Customer service available for fitment and usage questions
• Assistance with confirming FCC ID and OE number matches
• Support for troubleshooting transmission issues
• Returns or exchanges handled per seller policy

Who is this for: This replacement remote is aimed at Cadillac owners who need a fully assembled, tested, and ready-to-program key fob for CTS (2008–2015) or STS (2008–2011) models. It’s ideal for DIY owners arranging professional programming or for locksmiths and service shops that supply replacement remotes to customers.