Lexus RZ (EU)

Coolant capacity & service interval

Lexus RZ (EU) coolant capacity ranges from 4,5 to 7,4 liters. Service intervals include 90000 km, 195000 km, and 240000 km. The data covers 8 configurations.

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

TypeSpecifications
  • RZ 300e (2023- )
  • Inverter
  • Use: Normal
  • Capacity 5,9 liter (Service fill)
  • Change 90000 km
  • RZ 300e (2023- )
  • Inverter
  • Use: First change only
  • Capacity 5,9 liter (Service fill)
  • Change 240000 km
  • RZ 300e (2023- )
  • Heater
  • Use: Normal
  • Capacity 4,5 liter (Service fill)
  • Change 90000 km
  • RZ 300e (2023- )
  • Heater
  • Use: First change only
  • Capacity 4,5 liter (Service fill)
  • Change 195000 km
  • RZ 450e AWD (2023- )
  • Inverter
  • Use: Normal
  • Capacity 7,4 liter (Service fill)
  • Change 90000 km
  • RZ 450e AWD (2023- )
  • Inverter
  • Use: First change only
  • Capacity 7,4 liter (Service fill)
  • Change 240000 km
  • RZ 450e AWD (2023- )
  • Heater
  • Use: Normal
  • Capacity 4,5 liter (Service fill)
  • Change 90000 km
  • RZ 450e AWD (2023- )
  • Heater
  • Use: First change only
  • Capacity 4,5 liter (Service fill)
  • Change 195000 km

Additional Notes

  • The Lexus RZ (EU) separates coolant servicing into two distinct circuits: the inverter cooling system and the heater cooling system, each carrying its own capacity and change interval specifications.
  • On the RZ 300e, the inverter cooling system holds 5.9 liters as a service fill, while the heater cooling system holds 4.5 liters as a service fill, reflecting the different volume demands of each circuit.
  • The RZ 450e AWD inverter cooling system carries a service fill capacity of 7.4 liters, which is notably larger than the 5.9-liter figure for the same circuit on the RZ 300e, consistent with the AWD variant managing two motor inverters rather than one.
  • Both variants share an identical 4.5-liter service fill capacity for the heater cooling system, regardless of drivetrain configuration.
  • Under normal use conditions, both the inverter and heater cooling systems across both variants share a 90,000 km change interval.
  • The first change only interval for the inverter cooling system is set at 240,000 km on both the RZ 300e and the RZ 450e AWD, which is significantly longer than the standard 90,000 km normal-use interval for the same circuit.
  • The heater cooling system carries a first change only interval of 195,000 km on both variants, which differs from the 240,000 km first change only interval assigned to the inverter cooling system, indicating the two circuits follow separate long-interval schedules.

Other Systems