Lexus RX (EU)

Differential fluid capacity & service interval

The Lexus RX (EU) uses differential fluid with capacities of 1.7 liter and 3.1 liter depending on the configuration. The data covers 3 configurations.

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

TypeSpecifications
  • RX 350h AWD (2022- )
  • Rear, electric drive
  • Use: Normal
  • Capacity 1,7 liter
  • Code: Q610 1/1
  • RX 450h+ AWD (2022- )
  • Rear, electric drive
  • Use: Normal
  • Capacity 1,7 liter
  • Code: Q610 1/1
  • RX 500h AWD (2022- )
  • Rear, electric drive
  • Use: Normal
  • Capacity 3,1 liter
  • Code: QA10 1/1

Additional Notes

  • The Lexus RX (EU) differential fluid specifications cover the rear electric drive unit across three AWD hybrid variants introduced from 2022.
  • The rear electric drive differential on the RX 350h AWD and RX 450h+ AWD each holds 1.7 liters under normal use conditions.
  • The RX 500h AWD carries a notably larger rear electric drive differential capacity of 3.1 liters under normal use conditions, which is nearly double the volume specified for the other two variants.
  • A rear electric drive differential is a sealed unit that transfers torque to the rear axle via an electric motor rather than a mechanical driveshaft, and fluid capacity in such units reflects the internal volume required to lubricate gears and bearings within that assembly.
  • The 3.1-liter figure on the RX 500h AWD suggests a physically larger or more complex rear drive unit, consistent with the higher-output powertrain architecture associated with the 500h designation.
  • All three configurations list normal as the use condition, meaning the stated capacities apply to standard operating environments rather than severe-duty or first-fill scenarios.

Other Systems