Lexus RZ450E 2023 Owner's Manual page 436

436
8-4. Inspection of consumables
"MIN" line
C
If the level is on or below the "MIN" line,
add coolant up to the "MAX" line. (P.557)
■ Coolant selection
Only use "Toyota Super Long Life Coolant"
or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology.
"Toyota Super Long Life Coolant" is a mix-
ture of 50% coolant and 50% deionized
water. (Minimum temperature: -31°F
[-35°C])
For more details about coolant, contact
your Lexus dealer.
If the coolant level drops within a short
■
time of replenishing
Visually check the radiator, hoses, power
control unit coolant reservoir caps, drain
cock and water pump.
If you cannot find a leak, have your Lexus
dealer, test the cap and check for leaks in
the cooling system.
WARNING
When the heater system is hot
■
Do not remove the heater coolant reser-
voir caps.
The heater system may be under pres-
sure and may spray hot coolant if the cap
is removed, causing serious injuries, such
as burns.
NOTICE
When adding coolant
■
Coolant is neither plain water nor
straight antifreeze. The correct mixture
of water and antifreeze must be used to
provide proper lubrication, corrosion
protection and cooling. Be sure to read
the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to pre-
vent it from damaging parts or paint.
Checking the radiator and con-
denser
Check the radiator and condenser and
clear away any foreign objects.
If either of the above parts is extremely
dirty or you are not sure of their condi-
tion, have your vehicle inspected by
your Lexus dealer.
WARNING
When the EV system is hot
■
Do not touch the radiator or condenser
as they may be hot and cause serious
injuries, such as burns.
When the electric cooling fan are
■
operating
Do not touch the motor compartment.
With the power switch in ON, the elec-
tric cooling fan may automatically start to
run if the air conditioning is on and/or the
coolant temperature is high. Be sure the
power switch is OFF when working near
the electric cooling fan or radiator grille.
Checking the power control unit
coolant
The coolant level is satisfactory if it is
between the "MAX" and "MIN" lines
on the reservoir when the EV system is
cold.