Parts for your 2020 Nissan X-trail-Thermostat

2020 Nissan X‑Trail Thermostat

Yes, the 2020 Nissan X‑Trail does use a thermostat. This is confirmed by Nissan’s X‑TRAIL (T32) service/repair manual (Cooling System – “CO” section, 2019–2020 editions), which details the thermostat and water inlet assembly and the test/replacement procedure. Nissan’s Electronic Parts Catalogue (often referred to as FAST) also lists a thermostat assembly for T32 petrol and diesel variants, and major aftermarket catalogues (e.g., Gates and Dayco) supply direct-fit thermostats for the 2020 X‑Trail. So, a thermostat is both relevant and fitted from factory.

The thermostat in a 2020 Nissan X‑Trail quietly keeps the engine right in its sweet spot. It controls coolant flow so the engine warms up quickly, then holds a stable operating temperature for smooth performance, decent fuel economy, reliable cabin heat, and lower emissions. It’s a wax‑pellet type unit, typically set to begin opening in the low‑to‑mid 80s °C and be fully open by the mid‑90s °C, depending on the specific engine. When it’s shut, the coolant stays in the engine to warm up fast, once at temp, it meters flow to the radiator to stop things getting too hot.

While it isn’t a routine “every service” item, the thermostat deserves attention during cooling‑system maintenance. On an X‑Trail that’s clocked up plenty of kilometres, or one that’s seen an overheating episode, replacing the thermostat and its O‑ring is cheap insurance. It’s also smart to do when tackling related jobs like a water pump, radiator, or major hose replacement. Sticking with Nissan‑approved coolant (commonly the blue long‑life type) mixed to the correct ratio with demineralised water will help the thermostat and the rest of the system go the distance.

• Common signs it’s not happy: slow warm‑up, up‑and‑down temp gauge, weak cabin heat, electric fans running more than usual, coolant seeping at the housing, or a Check Engine Light with a P0128 code.
• Replacement tips: start with a cold engine, drain enough coolant to sit below the housing, fit a new seal, clean mating surfaces, and tighten fasteners evenly. After refilling, bleed air properly (heater on HOT, allow fans to cycle) or use a vacuum filler to avoid air locks.

There’s no ongoing “service” for the thermostat itself beyond keeping the cooling system clean and full of the right coolant. If an owner notices those tell‑tale symptoms, it’s time to test it and, if needed, swap it out before a minor niggle turns into an overheating headache.

Popular questions

Where is the thermostat on a 2020 X‑Trail?
It’s housed in the water inlet at the engine end of the lower radiator hose. Follow the lower hose from the radiator to the engine—where it meets the alloy/plastic housing is where the thermostat sits. Always work on it with the engine stone cold to avoid scalding coolant.

How often should the thermostat be replaced?
It isn’t a scheduled‑interval item. Replace it if there are symptoms (P0128, slow warm‑up, overheating, leaks) or as preventative maintenance during major cooling‑system work. Many owners choose to renew it around 8–10 years or roughly 160,000–200,000 km if the vehicle is a long‑term keeper.

Is it OK to drive with a faulty thermostat?
Not recommended. Stuck open usually won’t overheat immediately but can cause poor fuel economy, weak heater performance, and extra engine wear. Stuck closed can trigger rapid overheating and serious engine damage. If the gauge climbs or warnings appear, stop, let it cool, and sort the fault before driving on.