{"product_id":"standard-ignition-ax637-hvac-heater-core-temperature-sensor","title":"Standard Ignition AX637 HVAC Heater Core Temperature Sensor","description":"\u003ch2\u003eHVAC Heater Core Temperature Sensor for Kia and Hyundai\u003c\/h2\u003e\u003cp\u003eStandard Ignition AX637 is an HVAC heater core temperature sensor built for direct replacement in select Kia and Hyundai applications. It uses a push-in attachment method and a black housing with female and male plug\/socket connections for straightforward integration into the vehicle HVAC circuit.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHVAC heater core temperature sensor for climate control temperature monitoring\u003c\/li\u003e\n\u003cli\u003ePush-in attachment method for OE-style mounting\u003c\/li\u003e\n\u003cli\u003eBlack finish with polygon connector shape\u003c\/li\u003e\n\u003cli\u003eFemale + male connector and terminal design with blade terminals\u003c\/li\u003e\n\u003cli\u003eSensor only; no wiring harness included\u003c\/li\u003e\n\u003cli\u003eStandard Ignition AX637 replacement part number\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eStandard Ignition AX637 is used in the HVAC system to monitor heater core temperature and support accurate climate control operation. It is a direct-fit sensor for 2016-2022 Kia Sportage and 2015-2018 Hyundai Tucson applications, making it a practical choice when replacing a failed heater core temperature sensor in these vehicles. This part cross-references FLS916 and FLSA180 for the same application.\u003c\/p\u003e\u003cp\u003eFor buyers searching for a Kia Sportage HVAC heater core temperature sensor or a Hyundai Tucson heater core temperature sensor, AX637 provides the correct connector style and push-in mounting format for the listed vehicles. The part number AX637 is also useful when matching an existing sensor by reference.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInaccurate cabin temperature control\u003c\/li\u003e\n\u003cli\u003eHVAC system temperature sensor fault codes\u003c\/li\u003e\n\u003cli\u003eIntermittent heater output from a failing sensor signal\u003c\/li\u003e\n\u003cli\u003eClimate control performance issues tied to heater core temperature feedback\u003c\/li\u003e\n\u003cli\u003eReplacement of a damaged or worn original sensor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the connector shape, terminal style, and push-in mounting location before installation. Inspect the HVAC housing and electrical terminals for corrosion, heat damage, or looseness before installing the new sensor. Confirm vehicle application by year, make, and model: Fits 2016-2022 Kia Sportage, N\/A; Fits 2015-2018 Hyundai Tucson, N\/A. Use AX637 as the reference when comparing the original part number or catalog listing.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eStandard Ignition is a recognized aftermarket brand for electrical and engine management components. AX637 is built to match the listed application requirements for fitment and connector configuration.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":52816436494517,"sku":"FBHK-AX637","price":26.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_AX637_Fro.jpg?v=1784357360","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-ax637-hvac-heater-core-temperature-sensor","provider":"PartCatalog","version":"1.0","type":"link"}