Standard Ignition AX640 Ambient Air Temperature Sensor

Ambient Air Temperature Sensor for Ford Taurus

Standard Ignition AX640 is an ambient air temperature sensor built for direct replacement service on select Ford Taurus models. It mounts in the grille area and uses a plug-in connector with a bracket for secure installation.

Key Features

• Ambient air temperature sensor for HVAC-related temperature input
• Fits 2013-2019 Ford Taurus, in grille
• 2-terminal design with female connector and male terminals
• 1 connector, polygon connector shape, plug-in type
• Black finish with bolt-on attachment method
• Includes sensor and mounting bracket
• Standard Ignition AX640 cross-references OE-style applications

Product Details

Standard Ignition AX640 is an ambient air temperature sensor used to report outside air temperature data to the vehicle’s HVAC and display systems. For Ford Taurus applications, the grille-mounted location helps the sensor read ambient conditions away from engine heat, supporting more accurate temperature input. This part cross-references Ford OE-style applications such as DG1Z12A647A for the same application.

Common Issues This Part May Address

• Incorrect outside temperature display
• Temperature reading that stays fixed or changes erratically
• HVAC behavior affected by inaccurate ambient air data
• Sensor damage from grille-area exposure
• Fault codes related to ambient temperature input on Ford Taurus models

Installation Notes and Tips

Fits 2013-2019 Ford Taurus, in grille. Confirm the connector style, terminal count, and mounting location before installation. Inspect the bracket and surrounding grille area for damage, corrosion, or debris that could affect sensor placement. After installation, verify that the outside temperature display updates normally and that the sensor is seated securely in the bracket.

Quality Assurance

Standard Ignition AX640 is built as a replacement ambient air temperature sensor for service applications requiring the correct connector, mounting style, and grille location. Standard Ignition part number AX640 is listed with interchange references including ATSA394, TS7673, and WT5985.