Parts for your 2014 Suzuki Splash-Thermostat

2014 Suzuki Splash thermostat — purpose, servicing and replacement

Yes, the 2014 Suzuki Splash uses a thermostat. Technical sources that document this include: the Suzuki Splash workshop manual for K10B/K12B engines (Cooling System section, which details the thermostat and housing), the Suzuki Electronic Parts Catalogue (Cooling group, listing the thermostat assembly and gasket for MY2014 Splash), and reputable aftermarket catalogues (Mahle/Knecht, Gates, Wahler) that list direct-fit thermostats for Splash 1.0 and 1.2 engines. Together these confirm the thermostat is a standard, fitted component on the 2014 Splash.

On this model, the thermostat sits in a compact housing on the engine, controlling coolant flow to keep operating temperature in the sweet spot. When cold, it keeps coolant in the engine so the Splash warms up quickly, once it’s up to temp, it opens to send coolant through the radiator. That means better fuel use, smoother running, less wear, and proper heater performance on chilly mornings across Aus and NZ.

As part of regular servicing, it’s smart to keep an eye on thermostat health rather than replace it on a fixed timetable. Typical warning signs include:

• Slow warm-up or the temp gauge sitting low (stuck open)
• Overheating, fan running a lot, or coolant boiling (stuck closed)
• Heater going cold at speed but hot at idle
• ECU fault codes related to coolant temp plausibility

For a 2014 Splash that’s now a few years old, many workshops recommend inspecting the thermostat any time the cooling system is serviced. If the radiator, water pump, or hoses are being renewed—or if there’s a history of overheating—replacing the thermostat and its seal is low-cost insurance. Use an OEM-quality unit with the manufacturer-specified opening temperature (typically mid–high 80s °C for these engines).

When fitting, refresh the coolant with the correct spec, clean gasket surfaces, torque the housing bolts evenly, and bleed the system to avoid airlocks. After a road test, recheck for leaks and confirm stable operating temperature. If the Splash runs hot even with a new thermostat, also check the radiator cap, cooling fan operation, and water pump flow. Look after the thermostat and coolant, and the little Splash will handle city traffic and long, hot highway runs without breaking a sweat.

FAQs

Where is the thermostat on a 2014 Suzuki Splash?
The thermostat is housed in a small alloy or composite housing mounted on the engine, with the upper radiator hose connected nearby. It’s designed for quick warm-up and easy service access. Follow the hose from the radiator back to the engine and you’ll spot the housing and seal.

What temperature does the Splash thermostat open?
For K10B and K12B engines used in the Splash, the specified opening temperature is typically in the mid–high 80s °C range. Always match the exact spec listed for the VIN/engine code on the parts catalogue or under-bonnet label to keep the ECU’s warm-up and fan control strategies happy.

Should the thermostat be replaced as routine maintenance?
It’s generally replaced on condition rather than by mileage. That said, on older vehicles it’s sensible to renew it during major cooling system work or if there’s any overheating, slow warm-up, or fluctuating heater performance. Fresh coolant and a new cap at the same time is a good shout.