Parts for your 2024 Suzuki Splash-Tx valve

2024 Suzuki Splash TX Valve: Fitment, purpose and service advice

Based on technical references, the Suzuki Splash platform uses a thermostatic expansion valve (TX valve) in its air-conditioning system. The Suzuki Splash workshop manual (Heating & Air Conditioning section, 2008–2014) specifies an A/C expansion valve mounted at the evaporator case. Its sister model, the Opel/Vauxhall Agila B, is documented in GM service information with a block-type TXV at the evaporator inlet. Major aftermarket catalogues from HVAC suppliers such as DENSO, Nissens and NRF list a direct-fit TXV for Splash/Agila B engines (including the K12B 1.2). Although the Splash was discontinued earlier, vehicles on the road in 2024 follow the same HVAC architecture. So yes—the 2024 Suzuki Splash (as a vehicle in service) is fitted with a TX valve.

The TX valve is the traffic cop of the Splash’s A/C. It meters liquid refrigerant into the evaporator and reacts to temperature/pressure so the evaporator runs at the sweet spot—cold enough to chill the cabin, but not so cold that it ices up. By controlling superheat, it also keeps liquid refrigerant out of the compressor, protecting it from damage.

On the Splash, the TXV sits at the evaporator inlet inside or just beyond the HVAC case. It’s a block-style unit sealed with O-rings, and it relies on clean, moisture-free refrigerant to work smoothly. It’s not a routine service item, it’s replaced when there’s a fault or contamination.

When to suspect the TX valve? Look for weak or erratic cooling, evaporator icing, noticeable hissing at the dash, or odd gauge readings (high superheat/low suction suggesting a starved evaporator, or low superheat/high suction indicating flooding). A stuck or contaminated TXV often traces back to moisture, desiccant breakdown or compressor debris.

• If the system is opened, replace the receiver–drier (or desiccant bag in the condenser) and the TXV if contamination is suspected.
• Always use new, correct-size O-rings lightly lubricated with the specified PAG oil.
• Torque fasteners to spec, insulate the valve where required, then nitrogen pressure test and deep vacuum before charging to the factory fill.
• Stick with the specified refrigerant (typically R-134a for Splash-era systems unless converted). Mixing gases is a no-go.
• In Australia and New Zealand, A/C work must be performed by licensed technicians—venting refrigerant is illegal and dangerous.

With the right parts and a clean, properly evacuated system, a fresh TX valve restores stable vent temps and protects the compressor—worth doing once, and doing right.

Popular questions about 2024 Suzuki Splash TX Valve

Does the Splash use a TX valve or an orifice tube?
The Splash uses a thermostatic expansion valve at the evaporator, not an in-line orifice tube. This is confirmed across the Suzuki workshop manual and the Opel/Vauxhall Agila B service information. That’s why correct diagnosis looks at TXV behaviour and superheat, rather than orifice-tube restrictions.

How often should the TX valve be replaced?
It isn’t a schedule item. Replace it when there are symptoms of metering failure, contamination, or after a compressor burn-out. If the A/C circuit is opened for major work, many techs will renew the TXV and receiver–drier together to protect the refreshed system.

What else should be replaced with the TX valve?
Plan on new O-rings, the receiver–drier or desiccant bag, and a system flush if there’s debris. After assembly, the system needs a nitrogen leak test, deep evacuation, then a charge to the exact spec. This process keeps the new TXV happy and the cabin nice and chilly.