Parts for your 2015 Suzuki Splash-Tx valve

2015 Suzuki Splash TX-valve – what it does, how it fails, and when to sort it

Yes, the 2015 Suzuki Splash runs a thermostatic expansion valve (TX-valve), not an orifice tube. This is documented in Suzuki/Opel joint workshop information for the Splash/Agila B HVAC system, the Genuine Suzuki electronic parts catalogue listing “Valve, Expansion (A/C)” for Splash variants, and major OE supplier catalogues (e.g., DENSO) that specify a block-type TXV mounted at the evaporator inlet for R134a systems.

The TX-valve’s job is to meter refrigerant into the evaporator based on superheat, using a small diaphragm and sensing bulb or internal sensor to react to outlet temperature and pressure. By throttling flow, it keeps the evaporator cold without letting liquid refrigerant flood back to the compressor. On the Splash, that means stable cabin temps, decent pull-down on hot arvos, and less compressor hunting at idle.

There’s no scheduled replacement for the TXV on the Splash, but it’s worth a look whenever the A/C is serviced or opened. Typical faults include sticking (varnish or debris), loss of control due to moisture/ice, or internal wear. Tell-tales are weak cooling at lights but colder on the move, evaporator or suction-line frosting, erratic vent temps, a noisy hiss at the dash, or pressure readings showing very low low-side with normal/high high-side, or vice versa.

• When to replace: persistent poor cooling after correct regas, obvious frost patterns, compressor short-cycling, or pressure diagnostics pointing at restricted or overfeeding TXV.
• Good practice: if the system’s been opened, replace receiver–drier/desiccant, renew O-rings, evacuate properly, and refill by weight to the Splash spec for R134a. Oil-balance if components are changed.

Replacement on a Splash typically means accessing the block-type TXV at the evaporator connections (behind the glovebox area on most trims). Because the system must be recovered, evacuated and recharged, it’s a licensed A/C tech job. Always inspect for contamination, if there’s compressor debris, lines and condenser may need flushing or replacing. A fresh cabin filter helps airflow across the evaporator, easing TXV workload. There’s nothing to “adjust” on a modern TXV—if it’s sticky or leaking, swap it out.

With the right charge, healthy condenser airflow, and a responsive TXV, a Splash’s A/C should deliver quick, even cooling without fuss, even on muggy Kiwi or Aussie days.

• Technical sources referenced: Suzuki Splash/Opel Agila B workshop HVAC documentation, Genuine Suzuki EPC entries for “Valve, Expansion (A/C)”, OE supplier catalogues listing a block-type TXV for 2008–2015 Splash with R134a.

Popular questions

Does the 2015 Suzuki Splash have a TX-valve or an orifice tube?
It uses a block-style thermostatic expansion valve at the evaporator inlet. This layout appears across Splash/Agila B service literature and OE parts catalogues for the R134a system, so it’s the correct part when diagnosing metering issues.

How often should the Splash’s TX-valve be replaced?
There’s no routine interval. Replace it only if it’s faulty, contaminated, or whenever the A/C has suffered a major failure. If it’s being changed, plan on new O-rings, a fresh receiver–drier, proper evacuation, and a charge by weight.

What are the signs the TX-valve is failing on a Splash?
Look for weak cooling at idle, evaporator or suction-line frosting, hissing near the dash, compressor short-cycling, and pressure readings pointing to a restriction or overfeeding. If charge level and condenser airflow check out, the TXV is a prime suspect.