2026-09-15
Lexus RX 350/450h Water Pump Replacement Malaysia
RX 350 water pump (2GR-FE) is belt-driven — replace when coolant leaks from weep hole or bearing becomes noisy. Combine with coolant flush for total. RX 450h has both a mechanical water pump and an electric inverter coolant pump. Mechanical pump failure is the more common scenario —
Lexus RX Water Pump
- RX V6 (2GR-FE/FKS): serpentine belt-driven mechanical water pump — inspect at 100,000 km; V6 cooling system is reliable if coolant is maintained
- RX 450h: electric auxiliary water pump for inverter/motor cooling — additional inspection item beyond main engine water pump
- Water pump weep hole: all Lexus/Toyota water pumps have a weep hole under the shaft — a slow drip here means shaft seal is going; replace before it becomes a proper leak
- RX coolant: Toyota SLLC pink — mix with distilled water only; do not mix with green or blue coolant types