Lexus RZ450E 2023 Owner's Manual page 567

Cooling system
*
Capacity
Coolant type
*
: The coolant capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
NOTICE
Cooling system coolant
■
In order to ensure maximum performance of the traction battery cooling system and limit
risks of battery short-circuit and other damage to your vehicle, Lexus recommends using
"Toyota Genuine Traction Battery Coolant" or similar high-quality ethylene glycol-based,
low electric conductivity coolant, non-amine and non-borate coolant with azole addi-
tives.
Lexus cannot guarantee that the use of a product other than "Toyota Genuine Traction
Battery Coolant" will prevent risks of battery short circuit or other damage.
Never use water as it will cause damage.
Do not reuse coolant that has been removed from the radiator.
7.8 qt. (7.4 L, 6.5 Imp. qt.)
Use either of the following:
 "Toyota Genuine Traction Battery Coolant"
 Similar high-quality ethylene glycol-based, low electric
conductivity coolant, non-amine and non-borate coolant
with azole additives.
Do not use plain water alone.
10-1. Specifications
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