Parts for your 2019 Ford Everest-Tx valve

2019 Ford Everest TX Valve: what it does and when to service it

Based on the Ford Workshop Manual (Section 412-00 Climate Control) and Ford global parts catalogues for the T6 platform, plus common aftermarket listings from DENSO and Four Seasons, the 2019 Ford Everest is fitted with a thermostatic expansion valve (TX valve or TXV) at the evaporator inlet inside the HVAC case. On models equipped with rear air conditioning, there’s also a second TXV at the rear evaporator assembly.

The TX valve meters refrigerant into the evaporator, matching flow to heat load so the Everest’s cabin stays consistently cool without icing the core. It balances superheat at the evaporator outlet, which keeps efficiency up and protects the compressor from liquid slugging. Compared with fixed-orifice systems, a TXV setup handles Australia and New Zealand’s variable climates and stop–start driving with smoother vent temps.

There’s no fixed replacement interval for a TX valve, it’s a replace-when-faulty item. Typical symptoms include weak cooling at idle or cruising, vent temperature swings, evaporator freeze-up, or gauge readings that show very low suction with normal/high head pressure (stuck closed) or high suction with low superheat (stuck open). Contamination from a failing compressor can also foul the valve.

• Diagnosis: Have an ARCtick-licensed workshop (AU) or a suitably licensed A/C technician (NZ) check pressures, superheat, and for temperature drop across the valve. They’ll also look for debris and moisture.
• Replacement: By law, refrigerant must be recovered. The tech will replace the TXV and O-rings, add the correct PAG oil as specified by Ford, pressure-test with nitrogen, evacuate to deep vacuum, and recharge to the exact charge mass shown on the under‑bonnet label (R‑134a or R‑1234yf depending on build and market).
• Good practice: Whenever the system has been open to atmosphere or after compressor failure, replace the receiver‑drier/desiccant (often integrated in the condenser on Everest) and fit a new cabin filter to keep airflow up.

Owners can help by keeping the condenser clean of bugs and debris, running the A/C regularly year-round to circulate oil, and booking an A/C performance check if cooling falls off, there’s frosting on the lines, or they hear persistent hissing at the dash.

FAQs

Where is the TX valve on a 2019 Ford Everest?
It’s mounted at the evaporator inlet on the HVAC case behind the dashboard. Vehicles with rear A/C have an additional TXV at the rear evaporator, accessed via the rear interior trim. Access generally requires trim or dash work, so it’s a workshop job.

What are the signs the TX valve needs replacing?
Poor cooling, vent temperature surging, evaporator icing, and abnormal gauge readings are common. After compressor failure, metal debris can jam the TXV. A qualified technician can confirm with pressure and temperature measurements.

Does the Everest use R‑134a or R‑1234yf, and does it affect the TX valve?
Both were used across markets and build dates. Always check the under‑bonnet label for the correct refrigerant and charge. The TXV is matched to refrigerant type and system design, so the replacement part and charge procedure must follow the vehicle spec.