---
product_id: 102402637
title: "Befunny Keyless Entry Car Remote Smart Key Fob FCC ID: M3N5WY7777A for Cadillac CTS STS (1)"
brand: "befunny"
price: "$2.82"
currency: USD
in_stock: false
reviews_count: 9
url: https://www.desertcart.us/products/102402637-befunny-keyless-entry-car-remote-smart-key-fob-fcc-id
store_origin: US
region: United States of America
---

# Compact dimensions Keyless entry Ergonomic design Befunny Keyless Entry Car Remote Smart Key Fob FCC ID: M3N5WY7777A for Cadillac CTS STS (1)

**Brand:** befunny
**Price:** $2.82
**Availability:** ❌ Out of Stock

## Summary

> 🔑 Unlock the Future of Driving!

## Quick Answers

- **What is this?** Befunny Keyless Entry Car Remote Smart Key Fob FCC ID: M3N5WY7777A for Cadillac CTS STS (1) by befunny
- **How much does it cost?** $2.82 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/102402637-befunny-keyless-entry-car-remote-smart-key-fob-fcc-id)

## Best For

- befunny enthusiasts

## Why This Product

- Trusted befunny brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Fit:** Designed specifically for Cadillac CTS and STS models, ensuring perfect compatibility.
- • **Emergency Ready:** Includes an uncut valet key for peace of mind in any situation.
- • **Unlock Your Freedom:** Experience seamless access with keyless entry technology.
- • **Lightweight Convenience:** Weighing only 1.76 ounces, it’s easy to carry without the bulk.
- • **Dealer Programming Required:** Professional programming ensures optimal performance and security.

## Overview

This Keyless Entry Car Remote Smart Key Fob is a fully tested replacement designed for Cadillac CTS (2009-2014) and STS (2008-2010) models. It features an ergonomic design, includes an uncut emergency key, and requires dealer programming for optimal functionality.

## Description

Review: All-in-one key works great with new key and remote start. - The key was absolutely great! Also came with the battery already installed and fit just perfectly. The programming was easy also you unlock the driver door five times maybe you'll see the DLC display key number 2 3 or 4 is ready to be programmed put the working key in the cup holder, put the new key into the key slot under the center console armrest you'll hear it beap and it's programmed after pressing the ignition button and then the unlock button twice to finish the process. Thank you again
Review: Identical to factory units. - Cadillac remotes are prone to break not latch closed after changing batteries. Easy to reprogram.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07MDM136J |
| Additional Features | Ergonomic |
| Battery Type | CR2032 |
| Brand | BEFUNNY |
| Button Quantity | 5 |
| Compatible Devices | Cadillac CTS (2009-2014), STS (2008-2010), CTS Coupe (2014) |
| Connectivity Technology | Radio Frequency |
| Controller Type | Button Control |
| Customer Reviews | 4.0 out of 5 stars 99 Reviews |
| Manufacturer | Befunny |
| Max Number of Supported Devices | 3 |
| Maximum Number of Supported Devices | 3 |
| Mfr Part Number | M3N5WY7777A, 25943677, 25943676 |
| Model Number | M3N5WY777A |
| Number of Buttons | 5 |
| Special Feature | Ergonomic |

## Product Details

- **Brand:** BEFUNNY
- **Special Feature:** Ergonomic
- **Max Number of Supported Devices:** 3
- **Compatible Devices:** Cadillac CTS (2009-2014), STS (2008-2010), CTS Coupe (2014)
- **Connectivity Technology:** Radio Frequency

## Images

![Befunny Keyless Entry Car Remote Smart Key Fob FCC ID: M3N5WY7777A for Cadillac CTS STS (1) - Image 1](https://m.media-amazon.com/images/I/614E2wQX9mL.jpg)
![Befunny Keyless Entry Car Remote Smart Key Fob FCC ID: M3N5WY7777A for Cadillac CTS STS (1) - Image 2](https://m.media-amazon.com/images/I/51Sw-ZJmO7L.jpg)
![Befunny Keyless Entry Car Remote Smart Key Fob FCC ID: M3N5WY7777A for Cadillac CTS STS (1) - Image 3](https://m.media-amazon.com/images/I/61ZyKooLxRL.jpg)
![Befunny Keyless Entry Car Remote Smart Key Fob FCC ID: M3N5WY7777A for Cadillac CTS STS (1) - Image 4](https://m.media-amazon.com/images/I/51uapzmrX2L.jpg)

## Questions & Answers

**Q: will it work in 2013 Corvette**
A: Can't

**Q: Will this work on 2006 impala**
A: No

**Q: Will this work for a 2004 Escalade**
A: No his car uses a B102 GM key, a separate remote

**Q: How do you change the battery? Split the case? Or does the round battery cover come off somehow?**
A: First you need to remove the base of the remote which contains the key. Then you need to split the case to gain access to the battery.

## Customer Reviews

### ⭐⭐⭐⭐⭐ All-in-one key works great with new key and remote start.
*by A***R on June 1, 2019*

The key was absolutely great! Also came with the battery already installed and fit just perfectly. The programming was easy also you unlock the driver door five times maybe you'll see the DLC display key number 2 3 or 4 is ready to be programmed put the working key in the cup holder, put the new key into the key slot under the center console armrest you'll hear it beap and it's programmed after pressing the ignition button and then the unlock button twice to finish the process. Thank you again

### ⭐⭐⭐⭐⭐ Identical to factory units.
*by M***H on May 28, 2025*

Cadillac remotes are prone to break not latch closed after changing batteries. Easy to reprogram.

### ⭐ Key fob doesn't work.
*by T***E on July 16, 2019*

I purchased this key fob and got the key cut. Went through the programming process it recognized the new key but none of the buttons will work on key fob. I've tried reprogramming it and it says key is already recognized ready for key#3...I even brought it to a professional lock smith to program the key and he wasnt able to because he got errors! So now I have a key fob that is recognized by the car but doesn't work and I paid to have the key cut. Any help would be appreciated. Is there anyway to unrecognized the key fob from the car and start over. I'm not sure what to do.

## Frequently Bought Together

- Befunny Keyless Entry Car Remote Smart Key Fob FCC ID: M3N5WY7777A for Cadillac CTS STS (1)
- Keyecu Replacement Smart Remote Key Fob 5 Button for Cadillac STS CTS 2008-2013
- SUPALAND Key Fob Replacement Fits for Cadillac SRX 2010 2011 2012 2013 2014 2015 ATS XTS 2013-2014 ELR Push Start Button Smart Proximity Keyless Entry Remote Control NBG009768T 22865375 5 BTN

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-06-08*