Parts for your 2015 Ford Mondeo-Tx valve

2015 Ford Mondeo TX Valve: What it is, where it fits, and how to look after it

Technical sources confirm the 2015 Ford Mondeo is fitted with a thermostatic expansion valve (TX valve/TXV) in its air-conditioning system. Ford’s Workshop Manual for the 2015 Mondeo (Section 412-01, Climate Control) lists the A/C evaporator core expansion valve as a serviceable component, including removal and installation procedures. Ford’s OEM parts catalogues (e.g., FINIS/Microcat listings for Mondeo 2014–2019) show an A/C evaporator expansion valve specific to this model, and major HVAC suppliers (DENSO, Mahle/Behr, Hella) catalogue a block-type TXV for Mondeo Mk5 (from late 2014). That combination of factory documentation and parts listings makes the TX valve directly relevant to the 2015 Mondeo.

The TX valve is the metering brain of the Mondeo’s A/C, precisely controlling how much liquid refrigerant enters the evaporator. By matching flow to heat load and keeping evaporator superheat on target, it delivers colder air at the vents, resists icing, and plays nicely with the variable-displacement compressor so the system doesn’t hunt or cycle awkwardly. When the TXV sticks, leaks, or clogs with debris or moisture-laden oil, drivers may notice weak cooling at idle, temperature swings, frost on lines, or a hissing starved-evaporator sound.

During servicing, it’s worth checking TXV performance along with pressures, vent temps, and superheat. If the valve needs replacing, the job is more than a quick spanner twirl. The system must be fully recovered, the valve and O-rings replaced, lines cleaned where appropriate, and the receiver-drier/desiccant (often integrated in the condenser on Mondeo) renewed if the system’s been open or contaminated. Always add the correct PAG oil balance, evacuate under deep vacuum for 30–45 minutes to boil off moisture, then weigh in the exact refrigerant charge shown on the under-bonnet label (some 2015 builds use R-134a, later variants may be R-1234yf—check the sticker).

Common-sense tips help the TXV live a long life: keep the condenser clean for good airflow, fix tiny leaks before they draw in moisture, and insist on proper recovery/evacuation rather than “top-ups”. If debris is suspected from a failing compressor, fit an in-line filter where appropriate and flush the lines and condenser (or replace the condenser if it has micro-channels that can’t be flushed effectively). A well-set TXV, correct charge, and clean, dry system will keep the Mondeo’s cabin frosty even on a scorching Aussie or Kiwi summer arvo.

• Symptoms of TXV trouble: fluctuating vent temps, high low-side pressure with poor cooling, or frosting/icing on the evaporator inlet.
• Best practice: new O-rings, correct torque on fittings, fresh desiccant, precise refrigerant by weight, and a thorough leak check with nitrogen and dye/electronic methods.

FAQs

Where is the TX valve on a 2015 Ford Mondeo?
It’s a block-style valve mounted at the evaporator inlet, typically at the firewall/bulkhead area where the A/C lines pass into the cabin. Access varies by engine and trim, some work may be needed to move intake ducting or cowl panels for room.

What are the signs the TX valve needs replacement?
Expect poor cooling at idle or in traffic, temperature swings from the vents, uneven frost on the evaporator pipes, and pressure readings that don’t track ambient conditions. If the system’s been exposed to air or a compressor failed, the TXV can clog with debris or moisture-laden oil.

Do you have to re-gas after changing the TX valve?
Yes. The refrigerant must be recovered before removal, and after refit the system needs vacuum, correct oil balance, and a precise recharge by weight. Always follow the charge specification on the Mondeo’s under-bonnet label and use the refrigerant type listed there.