Parts for your 2017 Mitsubishi Outlander-Tx valve

The TX Valve on the 2017 Mitsubishi Outlander: What You Need to Know

When it comes to air conditioning systems, the TX valve, or thermal expansion valve, often takes centre stage as a critical component. However, for the 2017 Mitsubishi Outlander, it turns out that the vehicle does not use a traditional TX valve. Instead, the air conditioning system relies on an orifice tube or sometimes an electronically controlled expansion valve depending on the market and specific model configurations. Why is this the case? Let's break it down and look at the implications for maintaining your Outlander's A/C system.

The TX valve's main job in many air conditioning systems is to regulate the flow of refrigerant into the evaporator. It senses the temperature and pressure of the refrigerant and adjusts how much refrigerant enters the evaporator, ensuring optimal cooling performance and efficiency. This helps prevent the evaporator from freezing up while controlling the amount of refrigerant that changes state from liquid to gas. The TX valve plays a crucial role in protecting the system and maximising comfort during hot summer drives.

Now, the 2017 Mitsubishi Outlander's air conditioning system tends to use an orifice tube instead of a traditional TX valve. This is a small fixed-size tube that restricts refrigerant flow, performing a similar function but in a simpler and more cost-effective way. Orifice tubes are common in many Japanese and Korean vehicles due to their reliability and ease of maintenance. Instead of dynamically adjusting refrigerant flow like a TX valve, the orifice tube relies on system pressure differences to regulate refrigerant expansion.

Using an orifice tube means that the Outlander's HVAC system has fewer moving parts compared to a system with a TX valve. This can translate into fewer things that might go wrong over time when owning a vehicle in Australia's diverse climates. Also, the orifice tube design tends to be robust and requires less frequent maintenance compared to TX valves. So, while some vehicles benefit from the precision of a TX valve, Mitsubishi has opted for a simpler, proven method in the Outlander.

From a maintenance perspective, owners do not need to worry about inspecting or replacing a TX valve on the 2017 Outlander as there is none fitted. Instead, the maintenance focus shifts to ensuring the orifice tube remains free of blockages and the whole A/C system stays in good condition. Regular servicing with a qualified technician will typically include checking refrigerant levels, inspecting hoses and connections for leaks, and verifying the system pressures to keep things running smoothly.

What if the orifice tube becomes clogged? This can happen if contaminants enter the system or if the A/C compressor sheds material due to wear. Symptoms like weak cooling performance, strange noises, or even evaporator freezing can indicate trouble. Replacement of the orifice tube is a relatively straightforward service but must be handled carefully to prevent contaminating the system further. It's essential to have the system flushed and evacuated properly before fitting a new orifice tube to maintain system integrity.

Considering the 2017 Outlander's air conditioning setup, it's a plus that the absence of a TX valve means fewer potential failure points. TX valves can sometimes stick or malfunction, particularly in environments with a lot of temperature fluctuations or where the refrigerant quality can vary. For Australian drivers, with our hot summers and extended use of air conditioning, the reliability of the orifice tube system is a real benefit.

Still, that does not mean the Outlander's air conditioning system is maintenance-free. Regular checks are important, especially if you notice a drop in cooling efficiency or hear strange sounds from the system. Keeping refrigerant topped up to the correct specifications and ensuring the A/C compressor runs smoothly will help avoid costly repairs down the track. Technicians may also recommend periodic replacement of the receiver/drier or accumulator, which helps filter moisture and debris, complementing the orifice tube and protecting your 2017 Outlander's A/C system.

In a nutshell, while the thermal expansion valve might be a well-known component in many vehicles, the 2017 Mitsubishi Outlander takes a different approach. Its use of an orifice tube rather than a TX valve reflects a design choice favouring simplicity, durability, and ease of maintenance, which suits the everyday driver looking for reliability and effective air conditioning throughout Australia's seasons.