Parts for your 2020 Honda Cr-v-Thermostat

2020 Honda CR‑V Thermostat — What It Does and When to Replace It

Technical sources confirm the 2020 Honda CR‑V uses an engine coolant thermostat. Honda’s CR‑V (2017–2022) Service Manual outlines thermostat inspection and replacement for the 1.5‑litre turbo L15BE, and Honda’s electronic parts catalogue lists a Thermostat Assembly for 2020 models (common OEM reference includes 19301‑5AA‑A01, application varies by VIN). Hybrid variants also use thermostats within the engine coolant loop as described in Honda service information. So the thermostat is absolutely relevant on a 2020 CR‑V.

On a 2020 Honda CR‑V, the thermostat’s job is to get the engine up to operating temp quickly and then keep it there, typically in the high‑80s to low‑90s °C. It stays closed while the engine warms, then opens to send coolant through the radiator once the target temp is reached. That steady temperature means better fuel economy, lower emissions, consistent cabin heat, and longer engine life. If it sticks open, the CR‑V can run cool, use more fuel, and throw a P0128 fault. If it sticks closed, it can overheat and risk engine damage.

For servicing, the thermostat isn’t a time‑based replacement item, but it’s smart to check cooling performance during regular maintenance. Follow the owner’s manual for coolant change intervals and always use Honda‑approved premixed coolant (blue Type 2 in most markets). During a coolant service, a technician should:

• Scan live engine coolant temperature and confirm stable warm‑up.
• Inspect for leaks, crusty seals, or discoloured coolant.
• Verify radiator fan operation and heater performance under the bonnet and inside the cabin.
• Bleed air correctly after any coolant work, on the 1.5T, a proper vacuum fill or careful bleed helps avoid air pockets.

Replacement is recommended if there’s slow warm‑up, fluctuating temp gauge, weak heater output, overheating under load, a cool lower hose after warm‑up, or DTC P0128. On many 1.5T CR‑Vs the thermostat is integrated in a housing, replacing the complete assembly with a genuine‑spec unit is the tidy fix. Always fit a new O‑ring/gasket, torque the housing bolts correctly, refill with the right coolant, and pressure‑test. After a road test, recheck levels once the engine cools.

Owners in Australia and New Zealand will find preventative replacement sensible when tackling major cooling work (like a water pump) on higher‑kilometre vehicles. As always, confirm the exact procedure and part by VIN through Honda service information or a trusted parts desk.

Where is the thermostat on a 2020 CR‑V?

It’s housed where the lower radiator hose meets the engine. On the 1.5‑litre turbo, the integrated thermostat housing sits at the front of the engine near the transmission side. Hybrids also have a thermostat in the engine coolant loop, though the layout differs.

What are the signs the thermostat needs replacing?

Slow warm‑up, a temp gauge that hunts around, poor heater performance, overheating, a cool lower hose after warm‑up, or fault code P0128. Fuel use can climb and the cooling fan may run more than usual.

Do they need new coolant after a thermostat change, and which type?

Yes. Refill with Honda‑approved premix coolant (commonly Honda Type 2, blue) and bleed air properly. Avoid mixing universal coolants, sticking with the correct formulation protects seals, the water pump, and the turbo’s thermal management on the 1.5T.