Lexus RX, AL10 (USA / CAN)

Transfer case fluid capacity & service interval

Lexus RX, AL10 (USA / CAN) transfer case fluid capacity is 0,8 liter. Service intervals include checking every 16000 km or 15000 miles/ 18 months, and changing every 15000 miles/ 18 months. The data covers 3 configurations.

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

TypeSpecifications
RX 350 AWD (CAN) (2009-2015)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 16000 km
RX 350 AWD (USA) (2009-2015)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 15000 miles/ 18 months
RX 350 AWD (USA) (2009-2015)
  • Use: Severe
  • Capacity 0,8 liter
  • Change 15000 miles/ 18 months

Additional Notes

  • The Lexus RX 350 AWD (AL10) transfer case holds 0.8 liter of fluid across all listed configurations for the 2009-2015 model years, a figure consistent with the compact transfer units found in car-based AWD crossovers rather than truck-derived systems.
  • The 0.8 liter capacity applies equally to both the Canadian and US market variants, indicating no regional difference in the physical transfer case unit between the two markets.
  • The Canadian market specification calls for a fluid check interval of 16,000 km under normal use conditions, while the US market equivalent is set at 15,000 miles every 18 months under the same normal use conditions.
  • The 18-month time component in the US market interval means the fluid check is due at whichever threshold arrives first, whether the mileage or the time limit, a common dual-trigger structure in manufacturer maintenance schedules.
  • Under severe use conditions, the US market specification changes the service action from a check to a full fluid change at the same 15,000 miles or 18 months interval, meaning the interval distance and time remain identical while the required service operation becomes more involved.
  • The distinction between a fluid check under normal use and a fluid change under severe use at the same mileage and time threshold reflects how operating conditions affect fluid degradation rather than the frequency of attention the transfer case receives.

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