HomeHVAC > SensorsStandard Ignition AX324 A/C Evaporator Temperature Sensor
Part #: AX324

Standard Ignition AX324 A/C Evaporator Temperature Sensor

⚙️ 13 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi, A4, A4 Quattro, A5, A5 Quattro, Q5, and S5
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Overview of Standard Ignition A/C Evaporator Temperature Sensor AX324

The Standard Ignition A/C Evaporator Temperature Sensor AX324 is designed for precise temperature monitoring in the HVAC system of select Audi models. This sensor helps maintain optimal air conditioning performance by accurately detecting evaporator coil temperatures.

  • Terminal Quantity: 2
  • Connector Gender: Female
  • Terminal Gender: Male
  • Attachment Method: Push on
  • Color/Finish: Black
  • Connector Quantity: 1
  • Connector Shape: Rectangular
  • Connector Type: Plug in
  • Terminal Type: Pin
  • Mounting Bracket(s) Included: No
  • Wiring Harness Included: No

Detailed Product Description

The AX324 A/C Evaporator Temperature Sensor from Standard Ignition is engineered to fit Audi A4, A4 Quattro, A5, A5 Quattro, Q5, and S5 models. Featuring a two-terminal design with male pins and a female rectangular plug-in connector, this sensor ensures reliable electrical connections within the HVAC system. The push-on attachment method allows for straightforward installation without additional mounting brackets or wiring harnesses. Finished in black, the sensor is built to integrate seamlessly with the vehicle’s existing components.

Common Applications and Issues Addressed

  • Helps prevent evaporator freeze-up by monitoring coil temperature
  • Ensures accurate temperature readings for efficient A/C system operation
  • Supports proper climate control system cycling in Audi A4, A5, Q5, and S5 models
  • Replaces faulty or damaged evaporator temperature sensors causing inconsistent cabin temperatures
  • Addresses HVAC system error codes related to temperature sensor malfunctions

Installation Notes and Tips

Installation of the Standard Ignition AX324 sensor requires disconnecting the vehicle’s battery and accessing the evaporator housing within the HVAC system. The push-on terminal design simplifies connection to the existing wiring harness. No additional mounting brackets or wiring harnesses are necessary, but care should be taken to ensure the sensor is securely seated and the connector is fully engaged. Verify proper sensor operation after installation by checking HVAC system performance and diagnostic codes.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The AX324 sensor undergoes rigorous quality control testing to ensure durability and reliable performance in Audi HVAC systems. This part is backed by Standard Ignition’s limited warranty, providing coverage against defects in material and workmanship under normal use.

BrandStandard Ignition
Part NumberAX324
Attachment MethodPush On
ColorBlack
Connector GenderFemale
Connector ShapeRectangular
Connector TypePlug In
ContentsSensor
Mounting Bracket(s) IncludedNo
Terminal GenderMale
Terminal TypePin
Wiring Harness IncludedNo

This part fits 13 vehicles. Search below:

YearMakeModelPositionNotes
2012AudiA4N/A
2012AudiA4 QuattroN/A
2012AudiA5N/A
2012AudiA5 QuattroN/A
2012AudiQ5N/A
2012AudiS5N/A
2011AudiA4N/A
2011AudiA4 QuattroN/A
2011AudiA5N/A
2011AudiA5 QuattroN/A
2011AudiQ5N/A
2011AudiS5N/A
2010AudiA5N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

8K0820539ATSA200TS57451WT5760

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.