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Reservoir cap
A
"MAX" line
B
"MIN" line
C
If the level is on or below the "MIN" line,
add coolant up to the "MAX" line.
Coolant selection
■
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 recom-
mends using "Toyota Genuine Traction Bat-
tery Coolant" or similar high-quality
ethylene glycol-based, low electric conduc-
tivity coolant, non-amine and non-borate
coolant with azole additives.
Lexus cannot guarantee that the use of a
product other than "Toyota Genuine Trac-
tion 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.
For more details about coolant, contact
your Lexus dealer.
■
If the coolant level drops within a short
time of replenishing
Visually check the hoses, heater 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.
8-4. Inspection of consumables
WARNING
When the EV system is hot
■
Do not remove the power control unit
coolant reservoir caps.
The cooling 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 and adding the brake
fluid
Checking fluid level
■
The brake fluid level should be
between the "MAX" and "MIN" lines
on the tank.
Reservoir cap
A
"MAX" line
B
437
8
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