Parts for your 2017 Toyota Land cruiser-Tx valve

2017 Toyota Land Cruiser TX Valve: What It Does and How to Look After It

Yes, a TX valve (thermal expansion valve) is fitted to the 2017 Toyota Land Cruiser 200 Series. This is documented in Toyota’s Repair Manual sections covering “Air Conditioning – Cooler Expansion Valve (Removal/Installation)” and reflected in Toyota’s Electronic Parts Catalogue listings for the 200 Series (URJ202/VDJ200) showing a “Valve Sub-Assy, Expansion.” DENSO’s application catalogue also lists an A/C expansion valve for the 2017 Land Cruiser. Many AU/NZ-spec vehicles of this year use R‑134a refrigerant, always follow the under‑bonnet label for your exact charge and refrigerant type.

On the 2017 Land Cruiser, the TX valve meters refrigerant into the evaporator based on temperature and pressure, keeping the evaporator cold without letting it freeze. That smart metering is why the cabin stays comfy even on a scorching summer arvo. Models with rear air have a second expansion valve for the back evaporator, so there can be both front and rear TX valves working together.

It isn’t a routine replacement item, but it does rely on a clean, correctly charged system. If the A/C has been open to air, moisture and debris can foul the valve. Whenever the system’s opened for repairs, it’s good practice to replace the receiver/drier (often integrated with the condenser on this model), renew the O‑rings, evacuate thoroughly, and recharge to the label specification. That keeps the TX valve happy and prevents erratic cooling.

• Common clues of a crook TX valve: cold at highway speeds but warm at idle, frost on the evaporator inlet, compressor short‑cycling, or odd high/low pressure readings.
• Before blaming the valve, check cabin filter condition, condenser airflow (bugs and seeds love it), correct refrigerant charge, and that the blend doors and sensors are behaving.

Replacement is a dash‑area job for the front valve (at the evaporator inlet in the HVAC case). Rear A/C–equipped vehicles have the rear valve mounted near the rear evaporator behind trim. Use the Toyota procedure for access and torque values, and always conduct a nitrogen pressure test, deep vacuum, and precise recharge thereafter. A proper diagnosis with manifold gauges and a scan tool (to view A/C amplifier data) saves time and coin. Run the air‑con regularly year‑round, keep that cabin filter fresh, and the Land Cruiser’s TX valve will generally clock up years of reliable service.

Popular questions about the 2017 Toyota Land Cruiser TX valve

Where is the TX valve located on a 2017 Land Cruiser?

The front TX valve sits at the evaporator inlet inside the HVAC case behind the dash. If the vehicle has rear air, there’s a second TX valve mounted near the rear evaporator, typically behind the right‑hand rear quarter trim. Access varies with spec and requires trim and component removal as per the Toyota procedure.

When should the TX valve be replaced on a 200 Series?

Only after proper diagnosis confirms it’s restricted, leaking, or stuck. It isn’t a scheduled maintenance item. If the system is opened, replace the receiver/drier, renew O‑rings, evacuate, and recharge. Follow the under‑bonnet label for refrigerant type and charge mass.

What are the tell‑tale signs of a failing TX valve?

Intermittent or weak cooling, frosting on the evaporator inlet pipe, compressor short‑cycling, and pressure readings that hunt or sit out of range. Rule out low charge, blocked condenser, a dirty cabin filter, or blend door faults before condemning the valve.