Lexus RZ (USA / CAN)

Coolant capacity & service interval

Lexus RZ (USA / CAN) coolant capacity ranges from 6,5 to 7,4 liters. Service intervals include 5000 miles/ 6 months, 15000 miles/ 18 months, 80000 km/ 60 months, and 200000 km/ 150 months. The data covers 6 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • RZ 450e AWD (CAN) (2022- )
  • Inverter
  • Use: Normal
  • Capacity 7,4 liter (Service fill)
  • Change 80000 km/ 60 months
  • RZ 450e AWD (CAN) (2022- )
  • Inverter
  • Use: First change only
  • Capacity 7,4 liter (Service fill)
  • Change 200000 km/ 150 months
  • RZ 450e AWD (CAN) (2022- )
  • Heater
  • Use: Normal
  • Capacity 6,5 liter (Service fill)
  • Change 80000 km/ 60 months
  • RZ 450e AWD (CAN) (2022- )
  • Heater
  • Use: First change only
  • Capacity 6,5 liter (Service fill)
  • Change 200000 km/ 150 months
  • RZ 450e AWD (USA) (2022- )
  • Inverter
  • Use: Normal
  • Capacity 7,4 liter (Service fill)
  • Check 15000 miles/ 18 months
  • RZ 450e AWD (USA) (2022- )
  • Heater
  • Use: Normal
  • Capacity 6,5 liter (Service fill)
  • Check 5000 miles/ 6 months

Additional Notes

  • The Lexus RZ 450e AWD carries two separate cooling circuits: one serving the inverter and one serving the heater. Each circuit has a distinct capacity, which means a full coolant service requires accounting for both systems independently rather than as a single fill volume.
  • The inverter cooling system holds 7.4 liters as a service fill, while the heater cooling system holds 6.5 liters as a service fill. Both figures represent the amount of coolant added during a routine service rather than a complete system drain and refill from empty.
  • For the Canadian market RZ 450e AWD, both the inverter and heater cooling systems share the same normal-use change interval of 80,000 km or 60 months, whichever comes first.
  • The Canadian specification includes a separate first-change-only interval for both cooling circuits, set at 200,000 km or 150 months. A first-change-only interval means the coolant installed at the factory is formulated to last significantly longer before the initial replacement, after which the standard recurring interval applies.
  • The USA market specification for the inverter cooling system lists a check interval of 15,000 miles or 18 months under normal use conditions, rather than a change interval. The 7.4-liter service fill capacity remains the same as the Canadian specification.
  • The USA market heater cooling system carries a check interval of 5,000 miles or 6 months under normal use, which is notably shorter than the inverter circuit's 15,000-mile check interval in the same market. The service fill capacity for the heater circuit is 6.5 liters, consistent with the Canadian figure.

Other Systems