Lexus RX, XU30 (EU)

Automatic transmission fluid capacity & service interval

Lexus RX, XU30 (EU) automatic transmission fluid capacity ranges from 3,5 to 9,1 liters. Service intervals include checking at 45000 km or 36 months and changing at 90000 km or 72 months. The data covers 8 configurations.

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

TypeSpecifications
RX 350 (2006-2009)
  • Use: Normal
  • Capacity 9,1 liter (Dry fill)
  • Capacity 3,6 liter (Service fill)
  • Check 45000 km/ 36 months
  • Code: U151F 5/1
RX 350 (2006-2009)
  • Use: Severe
  • Capacity 9,1 liter (Dry fill)
  • Capacity 3,6 liter (Service fill)
  • Check 45000 km/ 36 months
  • Change 90000 km/ 72 months
  • Code: U151F 5/1
RX 350 AWD (2006-2009)
  • Use: Normal
  • Capacity 9,1 liter (Dry fill)
  • Capacity 3,6 liter (Service fill)
  • Check 45000 km/ 36 months
  • Code: U151F 5/1
RX 350 AWD (2006-2009)
  • Use: Severe
  • Capacity 9,1 liter (Dry fill)
  • Capacity 3,6 liter (Service fill)
  • Check 45000 km/ 36 months
  • Change 90000 km/ 72 months
  • Code: U151F 5/1
RX 300 (2004-2006)
  • Use: Normal
  • Capacity 9,1 liter (Dry fill)
  • Capacity 3,5 liter (Service fill)
  • Check 45000 km/ 36 months
  • Code: U151F 5/1
RX 300 (2004-2006)
  • Use: Severe
  • Capacity 9,1 liter (Dry fill)
  • Capacity 3,5 liter (Service fill)
  • Check 45000 km/ 36 months
  • Change 90000 km/ 72 months
  • Code: U151F 5/1
RX 300 (2003-2003)
  • Use: Normal
  • Capacity 9,1 liter (Dry fill)
  • Capacity 3,6 liter (Service fill)
  • Check 45000 km/ 36 months
  • Code: U151F 5/1
RX 300 (2003-2003)
  • Use: Severe
  • Capacity 9,1 liter (Dry fill)
  • Capacity 3,6 liter (Service fill)
  • Check 45000 km/ 36 months
  • Change 90000 km/ 72 months
  • Code: U151F 5/1

Additional Notes

  • The Lexus RX XU30 (EU) automatic transaxle carries a dry fill capacity of 9.1 liters across all configurations covered in the 2003-2009 range, a figure that reflects the total fluid volume required when filling a fully drained or rebuilt unit, including the torque converter and all internal passages.
  • Service fill capacity, which represents the amount of fluid exchanged during a routine drain-and-refill procedure, is listed at 3.6 liters for the RX 300 (2003-2003) and at 3.5 liters for the RX 300 (2004-2006), a difference of 0.1 liter between the two production periods despite sharing the same 9.1-liter dry fill figure.
  • The RX 350 and RX 350 AWD (2006-2009) both return to the 3.6-liter service fill value, aligning with the earliest RX 300 specification rather than the 3.5-liter figure used in the 2004-2006 period.
  • Under normal use conditions, the specified interval for all configurations is a fluid check at 45,000 km or 36 months, with no fluid change interval listed for normal use.
  • Under severe use conditions, the same 45,000 km / 36-month check interval applies, and a fluid change interval of 90,000 km or 72 months is additionally specified, doubling the check interval in terms of distance and time.
  • The AWD variant of the RX 350 (2006-2009) shares identical automatic transaxle fluid capacities and service intervals with the front-wheel-drive RX 350 of the same years, with both listing 9.1 liters dry fill, 3.6 liters service fill, and the same check and change intervals under their respective use conditions.

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