{"product_id":"mechanmagic-keyless-entry-remote-replacement-for-chrysler-dodge-m3m40821302-preinstalled-battery-ready-to-program","title":"MechanMagic Keyless Entry Remote Replacement for Chrysler\/Dodge M3M40821302 — Preinstalled Battery, Ready to Program","description":"\u003cp\u003e\u003cstrong\u003eMechanMagic keyless entry remote replacement M3M40821302 is a fully assembled, battery‑included key fob built to replace OEM remotes for select Chrysler and Dodge models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis MechanMagic replacement remote is designed as a drop‑in hardware swap for owners who need a ready‑to‑program key fob compatible with FCC ID M3M‑40821302. The unit ships pre‑assembled with battery and internal electronics, matching several factory part numbers so it’s straightforward for an auto locksmith or dealership to pair with your vehicle’s security system. It does not support user self‑programming and should be professionally programmed to ensure full functionality.\u003c\/p\u003e\n\n\u003ch3\u003eWhat vehicles and part numbers does this remote fit?\u003c\/h3\u003e\n\u003cp\u003eThis remote is intended for particular Chrysler and Dodge models from mid‑2010s to early‑2020s. Check your vehicle’s compatibility list or the FCC ID printed on your original fob before purchasing to confirm fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible FCC IDs: M3M‑40821302, M3M40821302\u003c\/li\u003e\n  \u003cli\u003eCommon vehicle matches: Chrysler 200 (2015–2017), Chrysler 300 (2019–2021)\u003c\/li\u003e\n  \u003cli\u003eDodge models covered: Charger and Challenger (2019–2021)\u003c\/li\u003e\n  \u003cli\u003eFactory part numbers matched: 68155687AB, 68394191AA, 68394195AA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much setup is needed to use this replacement key fob?\u003c\/h3\u003e\n\u003cp\u003eThe remote arrives with battery and electronics installed so no assembly is required, but it must be programmed by a dealer or qualified locksmith. There is no customer self‑programming procedure for this model; professional tools are necessary to synchronize the fob with your car’s immobilizer and remote systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShips ready to program—battery and electronics pre‑installed\u003c\/li\u003e\n  \u003cli\u003eProfessional programming required (dealership or certified locksmith)\u003c\/li\u003e\n  \u003cli\u003eNo on‑vehicle self‑programming or key cutting included\u003c\/li\u003e\n  \u003cli\u003eProgramming typically activates lock\/unlock, remote start (if vehicle equipped), and panic functions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat features and components are included with the MechanMagic fob?\u003c\/h3\u003e\n\u003cp\u003eThe MechanMagic remote is supplied as a finished unit that mirrors OEM electrical components and button layout. It’s built to replace worn or lost factory remotes and is offered as an economical alternative to dealer parts, while maintaining compatibility with the vehicle’s original systems when properly programmed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre‑installed battery and internal electronics for immediate programming\u003c\/li\u003e\n  \u003cli\u003eIdentical button layout for lock, unlock, remote start\/panic where applicable\u003c\/li\u003e\n  \u003cli\u003eManufactured to meet FCC ID specifications for direct replacement\u003c\/li\u003e\n  \u003cli\u003eRetail packaging includes one complete remote ready for programming\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this remote work with my car’s remote start and security features?\u003c\/h3\u003e\n\u003cp\u003eWhen matched to a compatible vehicle and correctly programmed, the replacement can operate the same remote functions as the original fob. Capabilities like remote start depend on whether your vehicle has that factory feature enabled; programming by a dealer or locksmith will confirm which functions will be active.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemote start function supported only if vehicle equipped and programming enabled\u003c\/li\u003e\n  \u003cli\u003ePanic and door lock\/unlock behaviors mirror original fob once programmed\u003c\/li\u003e\n  \u003cli\u003eDealer or locksmith can confirm feature availability during programming\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The MechanMagic M3M40821302 replacement remote suits owners of compatible Chrysler and Dodge vehicles who need a fully assembled, battery‑included spare or replacement fob. It’s ideal for those wanting an OEM‑style hardware swap at lower cost than dealer parts, provided you plan to have the unit professionally programmed. If you prefer a plug‑and‑play remote you can program yourself, consider a different model that supports user programming.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this key fob come with a battery installed?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the MechanMagic remote ships with the battery and internal electronics preinstalled and ready for professional programming.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I program this fob myself at home?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — self‑programming is not supported. A dealership or certified auto locksmith is required to program this model.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MechanMagic","offers":[{"title":"Default Title","offer_id":55165923393879,"sku":"B0G56SNCH7","price":37.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/mechanmagic-front-view-key-fob_393e1755-1e79-4641-8153-01a39a2769da.jpg?v=1790359894","url":"https:\/\/britishgarage.co.uk\/products\/mechanmagic-keyless-entry-remote-replacement-for-chrysler-dodge-m3m40821302-preinstalled-battery-ready-to-program","provider":"British Garage","version":"1.0","type":"link"}