Parts for your 2020 Suzuki Splash-Tx valve

2020 Suzuki Splash TX Valve — what it does and when to service it

Based on technical documentation, the 2020 Suzuki Splash uses a thermostatic expansion valve (TX valve/TXV) in its air‑conditioning system, not a fixed orifice tube. This is supported by the Suzuki Splash (EBC) Service Manual, Heating & Air Conditioning section, the Suzuki Electronic Parts Catalogue (listing “Expansion Valve” for Splash/Ritz), and major aftermarket catalogues from OEM suppliers such as DENSO that specify a TXV for Splash/Ritz models. Even for late‑registered or imported Splash vehicles, the A/C architecture remains TXV‑based.

The TX valve’s job is to meter refrigerant into the evaporator while maintaining proper superheat. It senses outlet temperature via a bulb and adjusts flow so the evaporator stays cold without flooding liquid back to the compressor. That means faster cool‑down, steadier vent temps in stop‑start traffic, and better compressor protection.

When a TXV plays up, the Splash may show symptoms like:

• Warm air at idle but cooler on the move
• Icing on the evaporator or the small A/C line, or “hissing” that comes and goes
• Erratic high/low gauge pressures during diagnosis

Contamination (desiccant breakdown, debris) or moisture can jam the valve or cause internal corrosion and freeze‑ups. If the A/C has been open to atmosphere or a compressor has failed, inspecting or replacing the TXV is smart practice.

When servicing the TX valve on a 2020 Suzuki Splash, a licensed A/C technician should:

• Recover refrigerant, then access the TXV at the evaporator connections in the HVAC unit (behind the dash/glovebox area on Splash).
• Replace the valve and all O‑rings, lubricating with the correct PAG oil, renew the receiver‑drier or desiccant bag whenever the system is opened.
• Torque fittings to spec (per Splash service manual), evacuate, leak‑test with nitrogen/vacuum hold, and recharge with the refrigerant specified on the under‑bonnet label (typically R134a on Splash) to the exact charge mass.

Ongoing care is simple: keep the condenser face clean, change the cabin filter regularly to maintain airflow across the evaporator, and run the A/C weekly to circulate oil and keep seals healthy. If cooling seems off, get proper gauge readings and a fault check before throwing parts at it—TXV, compressor control, fan speed and low refrigerant can all create similar symptoms.

References: Suzuki Splash (EBC) Service Manual – Heating & Air Conditioning, Suzuki Electronic Parts Catalogue (EPC) entries for “Expansion Valve” on Splash/Ritz, DENSO and equivalent aftermarket catalogues specifying a TXV for Suzuki Splash/Ritz models.

Popular questions about 2020 Suzuki Splash TX valve

Does the 2020 Suzuki Splash use a TX valve or an orifice tube?
It uses a TX valve. Suzuki’s service literature for the Splash/Ritz platform and the Suzuki EPC both list an expansion (thermostatic) valve at the evaporator, rather than a fixed orifice tube. Most small Suzukis of this era run a TXV/receiver‑drier layout.

Where is the TX valve located on a Splash?
It’s mounted at the evaporator connections inside the heater/A/C unit, typically accessed behind the glovebox area. Access varies by market trim, but the valve sits where the high‑pressure liquid line and the low‑pressure outlet line meet the evaporator core.

What refrigerant and charge does the Splash A/C use?
Check the under‑bonnet A/C label for the exact refrigerant type and charge mass. Splash models are typically R134a, but charge amounts vary by engine and market equipment. Using the precise charge is essential for TXV performance and compressor longevity.