{"product_id":"keymall-hyundai-sonata-2018-2019-keyless-entry-remote-fob-4-button-434mhz-with-128-bit-aes-transponder","title":"Keymall Hyundai Sonata 2018-2019 Keyless Entry Remote Fob — 4-Button 434MHz with 128-bit AES Transponder","description":"\u003cp\u003e\u003cstrong\u003eKeymall replacement proximity key fob for Hyundai Sonata 2018–2019 is a complete aftermarket keyless remote that includes the 128-bit AES chip, CR2032 battery, uncut emergency key, and four-button remote functions (lock\/unlock\/trunk\/panic).\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis Keymall remote is designed as a direct replacement for owners who need a functioning keyless entry fob for Hyundai Sonata model years 2018 and 2019. It matches the original’s button layout and frequency characteristics (434 MHz) and arrives with a factory-installed Texas Crypto 8A 128-bit AES transponder chip and CR2032 battery. The item is aftermarket and ships without manufacturer logos or printed part numbers on the housing.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know this fob fits my Sonata?\u003c\/h3\u003e\n\u003cp\u003eCompatibility depends on matching the original remote’s physical shape, button configuration, FCC ID, or part number. This Keymall unit is intended for Sonatas that originally used FCC ID CQOFD00120 or part numbers like 95440-C1500 \/ 95440-C1500NNA \/ 95440-C2500.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck your original remote’s FCC ID or printed part number.\u003c\/li\u003e\n  \u003cli\u003eConfirm the button count and layout (Lock, Unlock, Trunk, Panic).\u003c\/li\u003e\n  \u003cli\u003eMatch the emergency key blank shape with 81996-3Z020 or 81999-2S040.\u003c\/li\u003e\n  \u003cli\u003eEnsure your vehicle uses 434 MHz proximity\/keyless GO systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat steps are required to install and use this replacement remote?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires professional key cutting and electronic programming; the remote ships with an uncut emergency key and pre-installed electronics but will not operate until programmed to your vehicle. Keymall does not provide programming or cutting, so plan a visit to an authorized locksmith or dealer.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHave the emergency key blade cut to match your vehicle’s lock.\u003c\/li\u003e\n  \u003cli\u003eHave a certified locksmith or dealer program the transponder and remote functions.\u003c\/li\u003e\n  \u003cli\u003eVerify all four buttons (lock\/unlock\/trunk\/panic) work after programming.\u003c\/li\u003e\n  \u003cli\u003eKeep your original remote until the replacement is fully verified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat technical specs and safeguards should I be aware of?\u003c\/h3\u003e\n\u003cp\u003eThis Keymall remote includes a secure Texas Crypto 8A transponder with AES 128-bit encryption and operates at 434 MHz. Because it’s an aftermarket product, the housing lacks branded markings; nevertheless, it ships complete with battery, chip, and circuit board.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChip: 8A Texas Crypto, 128-bit AES encryption for security.\u003c\/li\u003e\n  \u003cli\u003eBattery: standard CR2032 installed and ready to program.\u003c\/li\u003e\n  \u003cli\u003eFrequency: 434 MHz, compatible with listed Sonata systems.\u003c\/li\u003e\n  \u003cli\u003ePackage: remote fob plus uncut emergency key; no logo on housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this remote work in the USA and Canada?\u003c\/h3\u003e\n\u003cp\u003eYes—this replacement is intended for the North American market, but regional differences in keyless systems can occur. Confirm your vehicle’s original remote identifiers and system type before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRegion\/market: USA \u0026amp; Canada compatible units.\u003c\/li\u003e\n  \u003cli\u003eIntended vehicles: Hyundai Sonata model years 2018 and 2019.\u003c\/li\u003e\n  \u003cli\u003eAftermarket note: housing has no OEM logo or part number.\u003c\/li\u003e\n  \u003cli\u003eProfessional programming and key cutting are required post-purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this item is for: Owners of Hyundai Sonata 2018–2019 who need a complete aftermarket replacement key fob with secure transponder technology and a ready-installed battery, and who are prepared to have the key blade cut and the remote professionally programmed. This product suits people replacing lost or damaged remotes when they can confirm matching FCC ID\/part number and the four-button layout. Avoid ordering if your original remote’s shape, blade, or button arrangement differs; compare your existing remote carefully before purchase.\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 fob come pre-programmed?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The Keymall fob includes the chip and battery but must be programmed to your vehicle by a locksmith or dealer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will the uncut key fit my Sonata?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The fob includes uncut key blanks 81996-3Z020 or 81999-2S040; a locksmith must cut them to your vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Keymall","offers":[{"title":"Default Title","offer_id":48082980241566,"sku":"B0CQ29BVHY","price":64.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/keymall-key-fob-front-view.jpg?v=1785821581","url":"https:\/\/northtrailauto.ca\/products\/keymall-hyundai-sonata-2018-2019-keyless-entry-remote-fob-4-button-434mhz-with-128-bit-aes-transponder","provider":"North Trail Auto","version":"1.0","type":"link"}