🚨 Stop! Ensure Compatibility Before Ordering!
Important: Some key fobs may look identical but have different internal components. If there are multiple versions of your key fob, you must verify the part number and FCC ID listed in the specifications to ensure compatibility. If only one option exists for your vehicle, VIN verification is not required.
⚠️ When to Provide Your VIN:
If you’re unsure or if multiple versions exist for your model, we recommend verifying with your VIN. You can enter it in the checkout note field, and we will verify it for you before processing your order.
Specifications
Part Numbers: 25943676 and 25854935
FCC ID: M3N5WY7777A
Buttons: Lock, Unlock, Remote Start, Trunk, and Panic
Frequency: 315 Mhz
Remote Programming:
Transponder Programming:
Chip ID: PHILIPS ID 46
Battery: (included)
Emergency Key: (included)
Programming Procedure #168
Programming Transmitters to the Vehicle
Only keyless access transmitters programmed to the vehicle will work. If a transmitter is lost or stolen, a replacement can be purchased and programmed through your dealer/retailer. The vehicle can be reprogrammed so that lost or stolen transmitters no longer work. Each vehicle can have up to four transmitters matched to it.
Programming with a Recognized Transmitter
A new transmitter can be programmed to the vehicle when there is one recognized transmitter. For vehicles sold in Canada, two recognized transmitters are required to program a new transmitter.
- The vehicle must be off.
- Both the recognized and new transmitters must be with you.
- Insert the vehicle key into the key lock cylinder located on the outside of the driver door.
- Turn the key to the unlock position five times within five seconds.
- The Driver Information Center (DIC) displays Ready To Leam Electronic Key #2, 3 or 4.
- Place the new transmitter into the transmitter pocket with the buttons facing the front of the vehicle. The transmitter pocket is inside the center console storage area located between the driver and front passenger seats.
- A beep sounds once the transmitter is programmed. The DIC displays Ready To Leam Electronic Key #3 or 4, or Maximum # Electronic Keys Leamed.
- Press the ignition control knob to exit programming mode.
- Remove the transmitter from the transmitter pocket and press on the keyless access transmitter two times.
- To program additional transmitters, repeat Steps 6 through 9.
Programming without a Recognized Transmitter
United States owners are permitted to program a new transmitter to their vehicle when a recognized transmitter is not available. The Canadian immobilizer standard requires that Canadian owners see their dealer/retailer for programming new transmitters when two recognized transmitters are not available.
The procedure requires three, ten minute cycles to complete the matching process.
- The vehicle must be off.
- Place the new transmitter into the transmitter pocket with the buttons facing the front of the vehicle. The transmitter pocket is inside the center console storage area located between the driver and front passenger seats.
- Insert the vehicle key into the key lock cylinder located on the driver door.
- Turn the key to the unlock position five times within five seconds.
- The DIC displays Press Start Control To Leam Keys.
- Press the ignition switch in.
- The DIC reads Leam Delay Active Wait XX Min and counts down to zero.
- The DIC displays Press Start Control To Leam Keys again.
- Press the ignition switch in again.
- Repeat Steps 7, 8 and 9.
- The DIC reads Leam Delay Active Wait XX Min and counts down to zero.
- A beep sounds and the DIC reads Ready To Learn Electronic Key # X. All previously known transmitter programming has been erased.
- A beep sounds once programming is complete. The DIC displays Ready To Learn Electronic Key # 2. To program additional transmitters, insert each transmitter in the pocket until a beep is heard and the DIC advances to the next electronic Key number. Up to four transmitters can be programmed. The DIC displays Maximum # Electronic Keys Learned and exits the programming mode. Press the ignition control knob to complete the process.
- Press the ignition control knob if programming is complete.
- Press on each newly programmed transmitter to complete the process.
Compatibility
Cadillac
- STS (2008-2011)
- CTS (2008-2015)









































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