Parts for your 2016 Ford Mondeo-Tx valve

2016 Ford Mondeo TX Valve — What It Is and When To Service It

Based on technical documentation, the 2016 Ford Mondeo (CD391) is built with a thermostatic expansion valve (TXV). Ford’s workshop materials for the CD391 climate control system specify an expansion valve at the evaporator inlet, the Ford electronic parts catalogue lists an “A/C expansion valve” for 2014–2018 Mondeo variants, and major aftermarket catalogues (e.g., Nissens/Valeo/Denso) also list a TXV for this model. So, a TX valve is relevant and fitted on the 2016 Ford Mondeo.

The TX valve is the part that meters refrigerant into the evaporator, using a temperature-sensing bulb and internal diaphragm to keep the evaporator at the ideal superheat. On the 2016 Mondeo’s variable-displacement compressor system, that balance is what delivers reliably cold air without icing up the core or wasting fuel. When the TXV is doing its job, cabin temps come down quickly, the system stays stable in stop–start traffic, and the compressor doesn’t have to overwork.

Like any precision metering device, the TXV can be upset by moisture, corrosion, or debris (such as desiccant breakdown from an aged receiver-drier that’s integrated in the condenser on many Mondeo variants). Telltale signs include slow cool-down, inconsistent cooling between idle and cruising, frost on the suction line, or pressure readings that don’t match ambient conditions.

• Common symptoms: weak cooling at idle or at speed, hissing at the firewall, frosting or sweating lines, and erratic high/low-side pressures.
• Typical causes: contamination, internal wear, or moisture, rarely electronic control issues (the TXV itself is mechanical).

Replacement isn’t a routine service item, it’s done when diagnostics point to a sticking or restricted valve. The Mondeo’s TXV is mounted at the evaporator inlet on the HVAC case at the bulkhead. Access varies by engine and RHD/LHD layout, but refrigerant recovery is always required before disconnecting lines. Best-practice on this platform is to replace the valve and all relevant O-rings, flush lines (where approved), and renew the receiver-drier/desiccant (often part of the condenser) if the system has been open or contaminated. After reassembly, a deep vacuum, a nitrogen pressure test if contamination was suspected, and a precise recharge to the under-bonnet specification are essential. Use the Ford-specified refrigerant and PAG oil type/quantity shown on the vehicle label or workshop manual.

To keep the TXV happy: run the A/C regularly year-round, keep the cabin filter fresh to maintain airflow, and fix condenser damage promptly. If cooling issues persist after a correct recharge, have a licensed A/C technician verify TXV operation, check the compressor control valve, and confirm condenser efficiency.

FAQs

Does a 2016 Ford Mondeo use a TX valve or an orifice tube?
It uses a thermostatic expansion valve (TXV). Ford’s workshop information for the CD391 platform and multiple parts catalogues list a dedicated expansion valve at the evaporator inlet for this model year.

Where is the TX valve on a 2016 Mondeo?
It’s mounted at the evaporator inlet on the HVAC case at the bulkhead (firewall), where the A/C pipes enter the cabin. Access can require removing trims or components near the cowl area. Refrigerant must be professionally recovered before removal.

Should the receiver-drier be replaced when changing the TX valve?
Yes, if the system has been open or contaminated. On many 2016 Mondeos the desiccant is integrated into the condenser, that means replacing the condenser or its serviceable desiccant bag (if applicable). Always install new O-rings and recharge to spec.