MechanMagic Replacement Key Fob for Chrysler 300 & Dodge Charger/Challenger (M3N-40821302) 5‑Button, 433MHz, Pre‑Assembled

MechanMagic’s M3N-40821302 replacement key fob is a pre‑assembled, 5‑button smart key remote designed to work with push‑button Chrysler 300 and select Dodge models from 2011–2018.

This non‑OEM, logo‑free key fob arrives with the battery and internal electronics installed and is tested before shipping. It transmits on 433 MHz, matches FCC ID M3N-40821302, and fits vehicles that originally used part numbers such as 5026676AH/AC. Note: it only works with push‑to‑start systems and requires professional programming by a dealer or locksmith.

Which cars will this MechanMagic key fob fit?

This remote is built to replace the original smart key units used on specific Chrysler and Dodge push‑button models. Check your vehicle’s original key FCC ID or part number to confirm compatibility before ordering.

• Chrysler 300: 2011–2018
• Dodge Charger: 2011–2018
• Dodge Challenger: 2015–2018
• Dodge Dart: 2014–2016

What’s included and how is the remote prepared?

The MechanMagic key fob ships fully assembled with its electronics and a 3V lithium coin battery installed so it’s ready for professional programming. The unit is pre‑tested to ensure the transmitter and buttons function before it leaves the warehouse.

• Pre‑installed electronics and battery (coin/button cell, 3V lithium)
• 5 functional buttons for lock, unlock, trunk, panic, and remote start where supported
• Tested transmitter at 433 MHz matching FCC ID M3N-40821302

How do I get the key fob programmed to my car?

Programming requires specialized tools and security access, so a dealer or an experienced automotive locksmith must perform the process. Self‑programming is not supported for this model, and you should bring proof of ownership to the service appointment.

• Service needed: dealership or qualified locksmith
• Bring vehicle title or registration and identification
• Allow time for immobilizer sync and remote testing after programming

Are there limitations or important notes before buying?

This is an aftermarket (non‑OEM) replacement and is supplied without any manufacturer logo. It is compatible only with vehicles equipped with a push‑button start—traditional keyed ignition systems are not supported.

• Non‑OEM product; no factory logo included
• Supports only push‑start vehicles—does not work with regular key models
• Verify compatibility using FCC ID M3N-40821302 or your vehicle’s original part number

Who this is for: Drivers of Chrysler 300 and compatible Dodge models who need a ready‑to‑program replacement fob without OEM branding. It’s ideal for owners replacing a lost or damaged smart key, shops stocking replacement remotes, or buyers seeking an affordable, pre‑tested alternative that a dealer or locksmith can program to match the vehicle’s security system.