Keep the climate-control system reading cabin temperature accurately with the Standard Ignition HVAC Heater Core Temperature Sensor (MPN AX384). It drops in as a direct-fit replacement for the 2010-2015 Lexus RX350, 2010-2015 Lexus RX450H, 2005-2018 Toyota Avalon, and 2007-2009 Toyota Camry.
This sensor monitors the temperature at the heater core and sends that signal to the HVAC control module, which uses the reading to help regulate blend-door position and cabin airflow temperature. When the original sensor drifts or fails, the system can lose its temperature reference and struggle to hold the temperature you select.
- Direct-fit replacement: designed to install in place of the original heater core temperature sensor on the listed applications.
- Sends the signal: reports heater-core temperature to the HVAC control system for cabin climate regulation.
- Signs it may need replacing: inconsistent cabin temperature, poor temperature blending, or an HVAC-related fault code. Diagnose the cause before replacing, since these symptoms can have other sources.
Interchange: Manufacturer part number AX384.
Frequently Asked Questions
What does this sensor do?
It monitors the temperature at the heater core and reports it to the HVAC control system, which uses the reading to help regulate cabin climate.
Which vehicles does the AX384 fit?
It is a direct-fit replacement for the 2010-2015 Lexus RX350, 2010-2015 Lexus RX450H, 2005-2018 Toyota Avalon, and 2007-2009 Toyota Camry. See the Buyer's Guide tab to confirm your vehicle.
What are signs this sensor may need replacing?
Inconsistent cabin temperature, poor temperature blending, or an HVAC-related fault code. Diagnose the cause first, as these symptoms can have other sources.
What is the manufacturer part number?
The Standard Ignition manufacturer part number is AX384.
Will replacing this sensor fix my heater?
If a failed heater core temperature sensor is the cause of your climate-control issue, this part replaces it. Confirm the diagnosis first, since other components can produce similar symptoms.
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