Lexus RZ (USA / CAN)

Additional Notes

• The Lexus RZ 450e AWD front electric drive differential carries a service fill capacity of 3.9 liters, while the rear electric drive differential holds 3.1 liters. Both figures represent service fill values, meaning the amounts apply to a fluid top-up or partial drain-and-refill procedure rather than a complete overhaul fill.
• For Canadian-market RZ 450e AWD units, both the front and rear electric drive differentials share a single interval specification: a fluid check at 48,000 km or 24 months, whichever comes first, under normal use conditions.
• The USA-market RZ 450e AWD specifies a front and rear differential fluid check at 30,000 miles or 36 months under normal use conditions. The kilometer-based Canadian interval of 48,000 km converts to approximately 29,826 miles, placing both markets at a closely equivalent distance threshold despite the different unit systems.
• Under severe use conditions, the USA-market RZ 450e AWD front electric drive differential requires a fluid change at 60,000 miles or 72 months. A check interval under normal use transitions to a change requirement under severe use, reflecting the greater stress placed on differential fluid in demanding operating conditions.
• The rear electric drive differential on the USA-market RZ 450e AWD also carries a severe-use change interval of 60,000 miles or 72 months, matching the front differential's severe-use schedule exactly. Both differentials share the same 3.1-liter and 3.9-liter service fill capacities regardless of whether the interval is a check or a change.
• The Canadian-market specification lists only a check interval for both differentials, with no separate severe-use change interval present in the data. The USA-market specification, by contrast, distinguishes between normal-use check intervals and severe-use change intervals for both axles.