2026-09-15
Lexus ES 250/300h Water Pump Replacement Malaysia
The ES 250 water pump (2AR-FE) is belt-driven and typically lasts 100,000–150,000 km. Replace when leaking or bearing is noisy. The ES 300h has an additional electric water pump for the hybrid inverter — this rarely fails but costs if it does. Always use Toyota SLLC when refilling.
Lexus ES Water Pump
- ES 300h (2AR-FXE): mechanical water pump driven by serpentine belt; also has an electric auxiliary water pump for hybrid system cooling
- Electric auxiliary pump (ES 300h): small electric pump circulates coolant through inverter when engine is off — inspect at 100,000 km; failure causes inverter overheating
- Water pump gasket: replace gasket whenever water pump is replaced — Toyota recommends genuine gasket only
- Coolant flush timing: change Toyota SLLC pink coolant at 160,000 km then 80,000 km — always pair with water pump inspection