Parts for your 2013 Honda Elysion-Tx valve

2013 Honda Elysion TX Valve — Purpose, Fitment and Service Advice

Technical sources confirm the 2013 Honda Elysion does use a TX valve (thermal expansion valve). The Honda Electronic Parts Catalogue (EPC) for RR1–RR4 Elysion models lists a “Valve Assy., Expansion (DENSO)” within the evaporator section, and Honda workshop manual diagrams show the TX valve mounted at the evaporator inlet behind the dash. DENSO’s HVAC parts references for Elysion (2004–2015) also specify an expansion valve rather than an orifice tube. So, for this vehicle, a TX valve is absolutely relevant and fitted from factory.

On the Elysion, the TX valve meters refrigerant into the evaporator, maintaining the right superheat so the air coming through the vents stays consistently cold without freezing up. It reacts to temperature and pressure changes, adjusting flow as the cabin load changes—think hot arvo, idling in traffic, or a cool morning run. When it’s working properly, you get stable vent temps and a compressor that doesn’t have to work harder than it should.

As part of routine servicing, the TX valve isn’t a scheduled replacement item, but it’s smart to check A/C performance each year. If cooling is weak, swings hot–cold, or the system ices up, the valve could be sticking or restricted. A pressure test with manifold gauges and a temp probe across the evaporator lines will usually pinpoint a lazy TX valve.

• Common clues of a crook TX valve: poor cooling at idle, frost on the evaporator line, rapid cycling, or uneven vent temps left-to-right.
• Best practice when replacing: recover refrigerant, remove the evaporator case to access the valve, replace O-rings, and add the correct PAG oil amount for component loss.
• Always replace the receiver/drier (or desiccant bag) if the system’s been opened, and evacuate to deep vacuum before re-gassing with the specified charge.

Because the valve sits at the evaporator in the HVAC case, labour can be the bigger part of the job. A tidy, leak-free reassembly—with torque on the flare fittings, fresh seals, and a precise refrigerant charge—makes all the difference to long-term reliability. For owners in Aus and NZ, a periodic A/C performance check and cabin filter replacement help keep that TX valve’s control stable and the Elysion’s air icy-cold.

Popular questions about 2013 Honda Elysion TX valves

Where is the TX valve on a 2013 Honda Elysion?

It’s mounted at the evaporator inlet inside the HVAC case behind the dashboard. Access typically requires removing the glovebox and portions of the evaporator housing, so it’s more involved than an under‑bonnet swap.

What symptoms point to a failing TX valve on an Elysion?

Weak cooling, temperature surging, frosting on the evaporator line, and rapid compressor cycling are common signs. Gauge readings often show low suction and unstable superheat when the valve is sticking or restricted.

Do you need to re-gas after replacing the TX valve?

Yes. The system must be recovered, evacuated with a vacuum pump, and recharged with the specified R134a amount and correct PAG oil balance. Skipping the vacuum or mischarging can hurt cooling and compressor life.