California MPH Nickel Metal Hydride Water 
Green Car Congress
SEPTEMBER 20, 2021
With the water-cooled intercooler keeping turbo temperatures down, the V6 engine improves on the outgoing V8 engine in every way. The system employs a 288V sealed Nickel-Metal Hydride (Ni-MH) battery that resides under the rear passenger seats.
Green Car Congress
MARCH 2, 2009
With the replacement of the engine’s belt-driven water pump, all engine coolant pumps are now electrically operated, reducing mechanical losses and providing engine coolant flow rate control independent of engine RPM at all times. The 2ZR-FXE engine is SULEV-rated (with AT-PZEV) in California, and has a Federal Tier 2 Bin 3 rating.
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