Standard Ignition AX479 HVAC Heater Core Temperature Sensor

HVAC Heater Core Temperature Sensor Overview

Standard Ignition AX479 is a direct-fit HVAC heater core temperature sensor built for OE-style fit, form, and function. It is made for vehicles that need accurate heater core temperature feedback to support consistent climate control performance.

Compatible with Ford C-Max, Ford Focus, Ford Transit Connect, Lincoln MKC, Ford Fiesta, and Ford Escape applications across the listed model years, AX479 is a practical replacement for diagnosing or correcting HVAC temperature-sensing faults.

Key Features

• Direct-fit OE replacement for straightforward installation
• Female connector with rectangular plug-in design
• 2 male blade terminals for secure electrical connection
• Built with materials selected to handle demanding under-dash conditions
• Tested for reliability and consistent HVAC sensor performance
• Standard Ignition AX479 supports OE-style fitment for Ford and Lincoln HVAC systems

Detailed Description

Standard Ignition AX479 is an HVAC heater core temperature sensor designed to match the original part’s fit and electrical interface. The rectangular female connector and two blade-style male terminals help ensure proper connection in the vehicle’s HVAC circuit. As a direct replacement, AX479 is suited for Ford C-Max, Ford Focus, Ford Transit Connect, Ford Fiesta, Ford Escape, and Lincoln MKC models within the listed years. This part cross-references OE-style applications such as BE8Z19C734A and TS57606 for the same application.

Common Issues This Part May Address

• Inaccurate heater core temperature readings
• HVAC temperature control that does not respond correctly
• Intermittent sensor signal or electrical connection faults
• Climate control performance problems tied to a failed temperature sensor
• Replacement needs after connector or terminal wear

Installation Notes and Tips

Verify connector shape, terminal style, and vehicle application before installation. AX479 is a plug-in sensor, so the existing harness connection should be inspected for corrosion, bent terminals, or heat damage before the new part is installed. Confirm the vehicle’s year, make, and model against the listed fitment for Ford Focus, Ford Fiesta, and related applications.

Quality Assurance

Standard Ignition states that this sensor is manufactured with quality control maintained throughout production and is tested for reliability and performance. The part is built as an OE replacement to support proper fit and function in the intended HVAC system.