Parts for your 2022 Toyota Aqua-Water pump

2022 Toyota Aqua water pump — what it does and when to service it

Based on Toyota’s technical literature and parts data, a water pump is absolutely used on the 2022 Toyota Aqua. The second‑generation Aqua (MXPK11/MXPK16) with the M15A‑FXE hybrid petrol engine employs an electrically driven engine coolant water pump, and the hybrid system also uses a separate electric pump for the inverter/PCU cooling loop. This is documented across Toyota’s Technical Information System (TIS) repair manuals for the M15A‑FXE cooling system, the Toyota Electronic Parts Catalogue (EPC) for Aqua MXPK1#, and Toyota’s New Model Features material for the latest Aqua/Yaris Hybrid platform.

On this model, the water pump’s job is straightforward: keep coolant circulating through the engine and radiator so temperatures stay in the sweet spot. Because it’s an electric pump (not belt‑driven), it’s managed by the vehicle’s ECU for smarter flow control, better warm‑up, and improved efficiency. There’s also that separate electric pump for the hybrid inverter, so keeping both cooling circuits healthy matters for long battery and power electronics life.

During regular servicing, it’s worth a quick once‑over:

• Check coolant level and condition