Parts for your 2022 Mitsubishi Eclipse cross-Tx valve

2022 Mitsubishi Eclipse Cross TX valve: what it does and when to service it

The 2022 Mitsubishi Eclipse Cross is fitted with a TX valve (thermostatic expansion valve). This is documented in Mitsubishi Motors’ workshop manual for the Eclipse Cross GK/GU series (Group 55 — Heater, Ventilation and Air Conditioning), which illustrates a block-type expansion valve mounted at the evaporator inlet. The Mitsubishi ASA electronic parts catalogue for MY2022 Eclipse Cross models also lists an “VALVE, EXPANSION” within the cooling unit assembly, and major aftermarket catalogues (including DENSO, Four Seasons and UAC) publish application-specific TX valves for 2018–2022 Eclipse Cross. That combination of OEM service information and parts listings establishes that a TX valve is indeed used on this vehicle.

On this model, the TX valve meters refrigerant into the evaporator to match heat load, keeping evaporator superheat in the sweet spot. That helps the cabin get cold quickly without icing up the core, while easing compressor workload for better efficiency and quieter running.

As part of regular servicing, there’s no scheduled replacement interval for the TX valve, but it should be assessed whenever A/C performance drops off. Typical TX valve faults include sticking (open or closed) and contamination from moisture or debris. Owners may notice weak or fluctuating cooling at idle, line frosting at the firewall, or pressures that don’t track with ambient temperature.

• Check basics first: cabin filter condition, condenser cleanliness, condenser fan operation and proper refrigerant charge by weight.
• If the system has been open or contaminated, the TX valve can become restricted. In these cases, replacement is prudent.
• Modern Eclipse Cross models typically use a condenser with an integrated receiver–drier, if the circuit has been opened, replace the desiccant/drier as specified.

Replacement is a job for a licensed air‑conditioning technician (refrigerant handling is regulated in Australia and New Zealand). The correct process includes safe recovery, O‑ring replacement lubricated with the specified oil, precise torque on the block fittings, evacuation with a deep vacuum and a recharge to the exact charge mass shown on the under‑bonnet label. Use the correct refrigerant and compressor oil specified for the market (some vehicles use R‑1234yf, others R‑134a). A post‑repair performance test with pressure readings, vent temps and leak detection is essential.

Done properly, a fresh TX valve restores stable evaporator control, faster pull‑down on hot days and helps the Eclipse Cross’s A/C stay reliable through long Aussie and Kiwi summers.

• Common symptoms of a failing TX valve:
  • Poor cooling at idle, then sudden blasts of cold
  • Evaporator or suction line icing near the firewall
  • High or unstable high‑side pressure with low low‑side pressure

Popular questions about the 2022 Mitsubishi Eclipse Cross TX valve

Where is the TX valve located on a 2022 Eclipse Cross?
It’s a block‑style valve mounted at the evaporator connections on the HVAC case, typically at the engine‑bay side of the firewall. The liquid and suction lines bolt to the valve body there. Access usually requires removing the cowl trims and working room around the lines, the evaporator case itself stays in the vehicle unless it’s being replaced.

What are the tell‑tale signs the TX valve needs attention?
Look for weak or inconsistent cooling, noticeable frosting on the low‑pressure line at the firewall, hissing that comes and goes and pressure readings that don’t align with ambient temperature. If the system was opened and moisture entered, desiccant breakdown can contaminate the valve and cause sticking.

Does the refrigerant type change the TX valve on this model?
Yes, the valve specification is matched to the refrigerant and oil package. Depending on market, the 2022 Eclipse Cross may run R‑1234yf or R‑134a. Always select the TX valve, O‑rings and oil type by VIN and compliance label to ensure correct superheat control and durability.