Standard Ignition AX637 HVAC Heater Core Temperature Sensor

HVAC Heater Core Temperature Sensor for Kia and Hyundai

Standard 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.

Key Features

• HVAC heater core temperature sensor for climate control temperature monitoring
• Push-in attachment method for OE-style mounting
• Black finish with polygon connector shape
• Female + male connector and terminal design with blade terminals
• Sensor only; no wiring harness included
• Standard Ignition AX637 replacement part number

Detailed Description

Standard 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.

For 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.

What It Helps Address

• Inaccurate cabin temperature control
• HVAC system temperature sensor fault codes
• Intermittent heater output from a failing sensor signal
• Climate control performance issues tied to heater core temperature feedback
• Replacement of a damaged or worn original sensor

Installation Notes and Tips

Verify 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.

Quality Assurance

Standard 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.