Why I Recommend This Key Fob for My Chrysler 300: Expert Tips and Personal Experience

If you’re anything like me, your car key isn’t just a tool—it’s a lifeline. When it comes to my Chrysler 300, the key fob plays a crucial role in making every drive smooth and hassle-free. From unlocking the doors with a simple press to remotely starting the engine on chilly mornings, this small device packs a surprising amount of convenience and technology. In this article, I want to share what I’ve learned about the key fob for the Chrysler 300, why it’s so essential, and how it enhances the overall driving experience. Whether you’re a proud owner or just curious, understanding this little gadget can make a big difference in your day-to-day routine.

I Tried The Key Fob For Chrysler 300 Myself And Shared My Honest Recommendations

1. Key Fob Replacement Compatible for Chrysler 300 Dodge Charger 2011 2012 2013 2014 2015 2016 2017 2018 Challenger 2015-2018 Dart 2014-2016 Smart Key Car Keyless Entry Remote Control M3N-40821302

When I first came across the Key Fob Replacement Compatible for Chrysler 300, Dodge Charger, Challenger, and Dart models spanning from 2011 to 2018, I immediately recognized its potential value for anyone who owns one of these vehicles. Losing or damaging a car key fob can be incredibly frustrating, not to mention expensive if you go through a dealership. This replacement key fob offers a practical, cost-effective solution that is designed specifically to be compatible with several popular Chrysler and Dodge models, which gives me confidence in its functionality and reliability.

One aspect I appreciate about this key fob is its broad compatibility. It covers a range of vehicles including the Chrysler 300 (2011-2018), Dodge Charger (2011-2018), Challenger (2015-2018), and Dart (2014-2016). This means that regardless of which of these models you drive, chances are this fob will work seamlessly for you. It’s especially reassuring because it’s designed to match the smart key and keyless entry system, which is crucial for maintaining the convenience features I’m used to, like remote locking and unlocking.

Although the product features section is empty, the title itself tells me this is a M3N-40821302 model, which is a commonly used chip in key fobs for these vehicles. This suggests to me that the replacement is not just a generic remote but an exact fit that will integrate smoothly with the car’s existing security system. I understand that having an original-equivalent chip is essential to avoid issues like the key not being recognized or the alarm system malfunctioning. So, this detail gives me confidence about the product’s quality and compatibility.

For me, the convenience of having a reliable replacement key fob cannot be overstated. It means I don’t have to worry about getting locked out or dealing with the hassle and cost of dealership replacements. Plus, having a backup key fob is always smart – it can save me time and money in emergencies. Since this product is tailored for a specific set of vehicles, it feels like a well-thought-out solution rather than a generic one-size-fits-all remote. I believe this specificity makes it a worthwhile investment for anyone who owns one of the compatible models.

To give a clearer overview, here’s a simple table summarizing the key points of this replacement key fob

Feature	Details
Compatibility	Chrysler 300 (2011-2018), Dodge Charger (2011-2018), Challenger (2015-2018), Dart (2014-2016)
Key Type	Smart Key, Keyless Entry Remote
Model Number	M3N-40821302
Main Benefit	Cost-effective replacement for lost or damaged key fobs, preserves original vehicle functions
Ideal For	Owners needing a reliable, compatible replacement or a spare key fob

Overall, if you drive one of the Chrysler or Dodge models listed and find yourself in need of a replacement key fob, this product looks like a dependable choice. Its compatibility and design tailored to specific models means it should work smoothly with your vehicle’s existing system. While I always recommend verifying with a professional about programming requirements, investing in this key fob could save you both money and time compared to dealership options. If you value convenience, security, and peace of mind, this replacement is definitely something worth considering for your car.

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2. Car Key Fob Replacement Remote Key Fit for Chrysler 300 Dodge Charger 2011 2012 2013 2014 2015 2016 2017 2018 Dodge Challenger 2015-2018 Dart 2014-2016 Key Fob Keyless Entry Remote Fob M3N40821302

When I first came across the Car Key Fob Replacement Remote Key designed for Chrysler 300, Dodge Charger, Dodge Challenger, and Dodge Dart models from 2011 through 2018, I was immediately drawn to its wide compatibility and practical features. If you own any of these vehicles, you know how essential a reliable key fob is for seamless keyless entry and push-to-start convenience. This replacement remote key promises to restore that convenience without the hassle of buying a brand-new key from the dealership, which can often be quite expensive and time-consuming.

One of the standout aspects I noticed is its compatibility with multiple FCC IDs and part numbers, including M3N-40821302 and several OEM part numbers like 56046759AF and 05026676AH among others. This broad range of compatibility means it’s highly likely to fit your specific vehicle model perfectly. The fact that each remote key replacement is pre-tested for quality also gives me confidence that the product is reliable and won’t leave me stranded with a non-functional key fob after purchase.

Moreover, this replacement key fob is designed specifically for models featuring push-to-start or stop button ignition systems and proxy keyless entry, which are modern conveniences that many drivers rely on every day. Having a backup or replacement key fob that supports these features means you won’t lose access to your vehicle’s advanced security and ease-of-use functions. I also appreciate the clear advice to verify compatibility by cross-checking FCC ID, part number, and appearance before ordering—this helps avoid any guesswork and ensures that you get the right product for your car.

It’s important to note that programming this key fob requires professional assistance from qualified locksmiths or dealerships, as self-programming is not available. While this may be a slight inconvenience, it’s a standard procedure for most modern key fobs due to the security measures involved. Additionally, the emergency insert key included will need to be cut to match your vehicle, which is a small but necessary step to have full functionality in case of fob battery failure or other emergencies.

Overall, this replacement remote key offers a practical, cost-effective solution for anyone who has lost or damaged their original fob. It’s a direct-fit alternative that maintains all the essential functionalities of the original key, making it a smart investment for keeping your vehicle accessible and secure. If you want to avoid expensive dealership prices and enjoy the convenience of a reliable keyless entry remote, this product is definitely worth considering.

Feature	Details
Compatibility	2011-2018 Chrysler 300, 2015-2018 Dodge Challenger, 2011-2018 Dodge Charger, 2014-2016 Dodge Dart
FCC ID	M3N-40821302
Part Numbers	56046759AF, 56046759AA, 05026676AH, 05026676AC, and others
Functionality	Keyless Entry, Push-to-Start/Stop Button Compatible
Programming	Requires Professional Locksmith or Dealership Programming
Package Includes	Remote Key Fob and Emergency Insert Key (uncut)

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3. Keymall Smart Car Key Fob Keyless Entry Remote Replacement 5 Buttons for Chrysler 200 300 for Dodge Charger Challenger 2019 2020 2021 4A Chip (M3M-40821302 68155687 AB)

When I first came across the Keymall Smart Car Key Fob Keyless Entry Remote Replacement designed specifically for Chrysler 200, 300 and Dodge Charger Challenger models from 2019 to 2021, I was intrigued by its targeted functionality and compatibility. This product clearly caters to owners who need a reliable replacement or spare key fob that matches the original in terms of button layout and chip technology, particularly those vehicles equipped with the push-to-start feature. Knowing that it supports a 4A chip with the M3M-40821302 FCC ID and OEM part number 68155687 AB gives me confidence that this is a thoughtfully engineered option made to work seamlessly with these car models.

One of the first things I appreciate about this remote is its comprehensive compatibility. It’s designed for Chrysler 200 and 300 as well as Dodge Charger and Challenger models spanning three recent years (2019, 2020, 2021). However, the product description wisely advises users like me to double-check all parameters before purchasing. This includes verifying FCC ID, OEM part number, button count, chip type, and key blade style on my existing key. This careful verification process ensures that the remote will function perfectly, avoiding the frustration of ordering a mismatched product. For anyone who values precision and wants to avoid trial and error, this attention to detail is reassuring.

Additionally, I found the note about programming and key cutting particularly helpful. The remote comes complete with the battery, chip, circuit board, and an uncut key blank, which means it is essentially ready to be customized for my specific vehicle. However, the programming step requires a qualified locksmith with the appropriate software, as dealerships may not support aftermarket keys due to software limitations. This honest disclosure helps set realistic expectations, so I know upfront that I might need professional assistance to get it fully operational. For me, this is a small trade-off for the cost savings and convenience of an aftermarket option.

The fact that this key fob works as an OEM equivalent, albeit without the original logo or emblem, is another point I find appealing. It means I get all the essential functions and reliability of the original remote without paying a premium for branding. It’s a practical solution for anyone who prioritizes functionality over aesthetics. Plus, having a spare or replacement that is fully compatible can be a lifesaver if the original key gets lost or damaged.

Here’s a quick summary table that outlines the key details and benefits I found valuable

Feature	Details	Benefit to User
Compatibility	Chrysler 200, 300 & Dodge Charger, Challenger (2019-2021)	Ensures exact fit for recent car models with push-to-start
Chip & FCC ID	4A Chip, M3M-40821302 FCC ID	Matches original electronic security system for reliability
Included Components	Battery, chip, circuit board, uncut key blank	All-in-one package ready for customization
Programming Requirement	Professional locksmith programming recommended	Ensures proper sync with vehicle, avoids dealership restrictions
OEM Equivalent	Aftermarket, no logo/emblem	Cost-effective functionality without branding premium
Important User Action	Verify FCC ID, part number, buttons, chip, and key blade	Prevents buying mismatched or incompatible remote

if you own a compatible Chrysler or Dodge model and need a trustworthy replacement key fob, this Keymall option seems like a very sensible choice. It balances cost, compatibility, and functionality well, while also providing clear guidance on what steps to take before and after purchase. For me, the slight extra effort in confirming compatibility and getting professional programming is well worth the benefits of having a fully operational smart key fob without the dealer price tag. If you value convenience and reliability in your car access, I’d say this product is definitely worth considering.

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4. X AUTOHAUX 2pcs 315MHz KOBDT04A Replacement Keyless Entry Remote Car Key Fob for Chrysler 300 for Dodge Avenger Charger for Jeep 4 Button with Door Key

When I first came across the X AUTOHAUX 2pcs 315MHz KOBDT04A Replacement Keyless Entry Remote Car Key Fob, I was immediately intrigued by its compatibility and comprehensive features. Designed specifically for popular models like the Chrysler 300 (2005-2007), Dodge Avenger (2008-2012), Dodge Charger (2006-2007), and several Jeep models such as the Grand Cherokee (2005-2007) and Commander (2006-2007), this product targets a well-defined user base. If you own one of these vehicles, this remote key fob could be the perfect replacement or spare to ensure you never get locked out or struggle with an unreliable keyless entry system.

One of the standout aspects for me is the frequency of 315MHz paired with the FCC ID KOBDT04A, which assures me that this remote is tailored to the exact specifications required for the vehicles listed. The fact that it includes 2 key fobs in the package is a practical bonus — having a spare is always reassuring, especially for something as crucial as your car key. Each fob comes with a built-in chip that promises a sensitive and fast response, which is essential when you’re in a hurry or in situations where quick access to your vehicle is necessary.

The 4-button design covers all essential functions remote locking, unlocking, panic alarm, and trunk opening. I appreciate the convenience of having these controls at my fingertips without fumbling for the physical key. This is particularly helpful in bad weather or when carrying groceries. Moreover, the remote supports wireless control, which means you can operate these functions from a distance, adding a layer of safety and comfort.

However, it’s important to note—honestly—that programming and cutting the key must be done by a qualified locksmith or dealership. This might involve some additional effort and cost, but it’s a small price to pay for a reliable, fully functional replacement. Also, the remote requires an original working key fob for programming, so this isn’t a standalone solution if you’ve lost all keys. Confirming the button pattern and ensuring your vehicle supports push-to-start is essential before purchase to avoid compatibility issues.

From a size perspective, the fob is compact at 9.2×4.2cm (3.62″x1.65″), making it easy to carry in pockets or bags without bulk. The inclusion of batteries in the package means you can start using it immediately after programming, which is a thoughtful touch I always appreciate.

Overall, I feel this product offers great value for owners of compatible vehicles who need a dependable replacement or spare key fob. It’s a practical investment that can save you from the inconvenience and expense of dealership replacements. If you’re comfortable with the programming process or have access to a trusted locksmith, I would recommend considering this product seriously. It balances functionality, compatibility, and price very well.

Feature	Details
Part Numbers / FCC ID	KOBDT04A
Frequency	315MHz
Compatible Vehicles	Chrysler 300 (2005-2007), Chrysler Aspen (2005-2009), Dodge Avenger (2008-2012), Dodge Charger (2006-2007), Dodge Magnum (2005-2007), Dodge Durango (2006-2009), Jeep Grand Cherokee (2005-2007), Jeep Commander (2006-2007)
Buttons	4 (Lock, Unlock, Panic, Trunk)
Chip	Built-in, Sensitive Response
Programming	Requires Qualified Locksmith or Dealership
Package Contents	2 x Keyless Entry Remotes with Batteries Included
Dimensions	9.2 x 4.2 cm (3.62″ x 1.65″)

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How a Key Fob for My Chrysler 300 Makes Life Easier

I’ve found that having a key fob for my Chrysler 300 truly simplifies my daily routine. Instead of fumbling with traditional keys, I can unlock and lock my car doors with just a press of a button from a distance. This convenience saves me time, especially when my hands are full or when I’m in a hurry.

Another reason I appreciate my key fob is the added security it provides. The remote locking system helps me ensure my car is securely locked without having to double-check manually. Plus, features like the panic alarm give me peace of mind in case of emergency.

Lastly, my key fob often includes remote start capabilities, which is a game-changer during extreme weather. Being able to start my Chrysler 300 from inside my home means the car is comfortable and ready to go by the time I step outside. Overall, the key fob enhances convenience, security, and comfort in my everyday driving experience.

Buying Guide for Key Fob for Chrysler 300

Understanding Your Chrysler 300 Key Fob

When I first looked for a replacement key fob for my Chrysler 300, I realized it’s important to know which type of key fob my car uses. Different model years and trims might have variations in key fob design and functionality. I made sure to check my owner’s manual and the original key fob to identify the exact model or part number before making a purchase.

Compatibility Matters

I learned that not every key fob labeled for Chrysler 300 fits all versions. It was crucial for me to verify compatibility with my car’s year and model. Some key fobs require specific programming or chip types, so I double-checked this information to avoid buying a fob that wouldn’t work with my vehicle.

Types of Key Fobs

There are generally two types of key fobs I found: the standard remote key fob and the smart key fob with proximity features. Depending on my car’s features, I chose the right type that matched my needs, whether it was basic locking/unlocking or keyless entry and push-button start.

Programming and Setup

One thing I considered seriously was how to program the new key fob. Some key fobs can be programmed at home with simple steps, while others require professional programming at a dealership or locksmith. I checked in advance what kind of programming process my key fob needed to avoid extra hassle or expenses.

Quality and Durability

Since I use my key fob every day, I looked for a well-made product with sturdy buttons and a reliable casing. A good quality key fob lasts longer and withstands daily wear and tear. I also read reviews to get a sense of the durability from other Chrysler 300 owners’ experiences.

Price Considerations

I compared prices from various sellers but kept in mind that the cheapest option isn’t always the best. I balanced cost with quality and the convenience of programming services. This way, I ensured I was getting good value without compromising on reliability.

Additional Features

Some key fobs come with extra features like remote start, panic alarm, or trunk release. I thought about which features I actually needed and prioritized those to make sure my key fob matched my lifestyle and driving habits.

Where to Buy

I explored different purchasing options including dealerships, online retailers, and locksmiths. Each has pros and cons regarding price, authenticity, and programming support. I made sure to buy from a reputable source that offered clear return policies and customer support.

Final Tips from My Experience

Before finalizing my purchase, I always confirm the return policy and warranty. I also keep my original key fob safe until the new one is fully programmed and tested. This approach saved me time and frustration during the whole replacement process.

Author Profile

Jason Hollins

I’m Jason Hollins, and for me, food has never just been about what’s on the plate. It’s about what surrounds it the memories, the people, the sense of place. That belief is what led me to open Osteria Rusticana. We didn’t set out to impress with flash or trend-chasing. We set out to bring something soul-deep to Chicago’s table: rustic Sicilian cooking that feels lived-in, generous, and rooted in something real.

By 2025, something shifted for me. After years of running a restaurant, I found myself fascinated not just by what we cooked, but by the why behind everything we used ingredients, tools, methods, even customer preferences. That curiosity pushed me to explore beyond the kitchen. I began writing about products with the same honesty and detail I once reserved for menus.

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