Parts for your 2023 Toyota Camry-Tx valve

2023 Toyota Camry TX-Valve (Thermal Expansion Valve): Purpose, Service Tips, and When to Replace

Technical sources indicate the 2023 Toyota Camry does use a TX-valve (thermostatic expansion valve), also called a cooler expansion valve. Toyota’s Repair Manual for the 2023 Camry (HVAC: Cooler Expansion Valve – Removal/Installation) specifies the component at the evaporator inlet, and Toyota’s genuine parts catalogue lists a “Valve Sub-Assy, Cooler Expansion” for this model (e.g., 88515-33220 depending on variant). DENSO’s A/C fundamentals also describe the TXV as the metering device used in Toyota passenger-vehicle HVAC systems. So yes, the TX-valve is fitted and relevant to the 2023 Camry.

On a 2023 Camry, the TX-valve meters refrigerant into the evaporator under the dash, keeping evaporator superheat in the sweet spot. That control helps deliver steady, chilly air without the evaporator icing up or the compressor working harder than it should. In hybrids, the principle’s the same even though the compressor is electric, the TXV still does the precise metering.

When it comes to servicing, a healthy TX-valve is all about clean, dry refrigerant and correct charge. Any moisture, debris, or over/undercharge can make the valve stick or hunt. If cooling performance is weak at idle, erratic on the move, or there’s frost on lines near the firewall, the TXV could be restricted or not tracking superheat properly. A licensed A/C technician can confirm by checking pressures, temperatures, and superheat/subcool values.

Replacement isn’t a routine interval job, it’s done when fault symptoms and diagnosis point to the valve. Because the TXV is at the evaporator connection, access involves working under the dash and opening the refrigerant circuit. In Australia and New Zealand, that must be performed by an ARCtick-licensed technician. They’ll recover refrigerant, replace the valve (and O-rings), evacuate, and recharge to the stickered specification on the vehicle. If it’s a hybrid, insist on ND-11 (POE) compressor oil—never PAG—so the electric compressor is protected.

• Common clues the TX-valve needs attention:
  • Slow cabin cooldown or warm air at idle, then cold while cruising
  • Compressor short-cycling, line frosting near the firewall, or uneven vent temps
  • Abnormal high/low side pressures during gauge testing
• Good habits:
  • Run the A/C regularly to keep seals and the TXV happy
  • Replace the cabin filter on schedule so airflow and evaporator temps stay stable
  • Fix leaks promptly, moisture is the enemy of TXV performance

References (no outbound links): Toyota Service Information (TIS) – 2023 Camry Repair Manual, HVAC: Cooler Expansion Valve, Toyota Genuine Parts Catalogue – Valve Sub-Assy, Cooler Expansion (e.g., 88515-33220), DENSO A/C Fundamentals – TXV operation and diagnostics.

Popular questions

Where is the TX-valve located on a 2023 Toyota Camry?
It’s mounted at the evaporator inlet, essentially at the firewall area on the cabin side, integrated with the evaporator pipes. Access is from inside the vehicle by removing trim and HVAC components under the dash. Because the system must be opened, a licensed A/C technician should handle it.

How often should a 2023 Camry TX-valve be replaced?
There’s no set replacement interval. It’s replaced only if it’s faulty—typically due to contamination, moisture, or wear. Regular A/C servicing, correct refrigerant charge, and a clean cabin filter go a long way to keeping the TXV working for the life of the car.

Does the hybrid Camry use a different TX-valve or service method?
The hybrid still uses a TXV to meter refrigerant, but the compressor is electric and requires ND-11 (POE) oil. Service procedures are similar, but the oil type and strict cleanliness are critical to protect the high-voltage compressor.