Standard Ignition HVAC Heater Core Temperature Sensor P/N:AX409
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.
Interchange: Manufacturer part number AX384.
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 "Vehicles it fits" section 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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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.