HomeHVAC > SensorsStandard Ignition AX504 HVAC Heater Core Temperature Sensor
Part #: AX504

Standard Ignition AX504 HVAC Heater Core Temperature Sensor

⚙️ 41 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: Lexus, GS F, GS350, IS350, LC500, RC F, RC300, RC350, GS200t, IS200t, RC200t, and IS250
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Standard Ignition HVAC Heater Core Temperature Sensor AX504

The Standard Ignition HVAC Heater Core Temperature Sensor AX504 is designed for precise temperature monitoring in the heating and ventilation system of select Lexus models. This sensor ensures accurate climate control by providing reliable temperature data to the HVAC system.

  • Connector Gender: Female
  • Connector Quantity: 1
  • Connector Shape: Square
  • Terminal Gender: Male
  • Terminal Quantity: 2
  • Terminal Type: Pin

Detailed Product Description

The AX504 sensor from Standard Ignition is engineered to fit a range of Lexus vehicles including the GS200t, GS350, GS F, IS200t, IS250, IS350, LC500, RC200t, RC300, RC350, and RC F models. Featuring a female square connector with a single connection point, it interfaces with the vehicle’s wiring harness securely. The sensor terminals are male pins, with two terminals ensuring stable electrical contact and accurate signal transmission. This configuration supports consistent HVAC system performance by accurately measuring the heater core temperature.

Common Applications and Issues Addressed

  • Helps maintain proper cabin temperature control in Lexus GS and IS series vehicles
  • Prevents HVAC system overheating or underperformance
  • Resolves inaccurate temperature readings causing climate control malfunctions
  • Supports efficient heater core operation in Lexus RC and LC models
  • Assists in diagnosing HVAC sensor-related error codes

Installation Notes and Tips

  • Ensure the vehicle ignition is off before installation
  • Disconnect the battery to prevent electrical shorts
  • Locate the heater core temperature sensor in the HVAC housing as per vehicle service manual
  • Carefully disconnect the old sensor’s female connector and remove the sensor
  • Install the new AX504 sensor ensuring the male pin terminals align correctly
  • Reconnect the wiring harness and verify secure connection
  • Test the HVAC system for proper operation after installation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The AX504 HVAC Heater Core Temperature Sensor undergoes rigorous quality control testing to maintain consistent functionality. Warranty coverage details should be confirmed based on the point of purchase and Standard Ignition’s current policies.

BrandStandard Ignition
Part NumberAX504
Connector GenderFemale
Connector ShapeSquare
Terminal GenderMale
Terminal TypePin

This part fits 41 vehicles. Search below:

YearMakeModelPositionNotes
2019LexusGS FN/A
2019LexusGS350N/A
2019LexusIS350N/A
2019LexusLC500N/A
2019LexusRC FN/A
2019LexusRC300N/A
2019LexusRC350N/A
2018LexusGS FN/A
2018LexusGS350N/A
2018LexusIS350N/A
2018LexusLC500N/A
2018LexusRC FN/A
2018LexusRC300N/A
2018LexusRC350N/A
2017LexusGS FN/A
2017LexusGS200tN/A
2017LexusGS350N/A
2017LexusIS200tN/A
2017LexusIS350N/A
2017LexusRC FN/A
2017LexusRC200tN/A
2017LexusRC300N/A
2017LexusRC350N/A
2016LexusGS FN/A
2016LexusGS200tN/A
2016LexusGS350N/A
2016LexusIS200tN/A
2016LexusIS350N/A
2016LexusRC FN/A
2016LexusRC200tN/A
2016LexusRC300N/A
2016LexusRC350N/A
2015LexusGS350N/A
2015LexusIS250N/A
2015LexusIS350N/A
2015LexusRC FN/A
2015LexusRC350N/A
2014LexusGS350N/A
2014LexusIS250N/A
2014LexusIS350N/A
2013LexusGS350N/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:

8862030050ATSA372TS57631WT5940

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