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cold.
Reservoir cap
A
"F" line
B
"L" line
C
If the level is on or below the "L" line, add
coolant up to the "F" line. (→P.453)
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.
U.S.A.:
"Toyota Super Long Life Coolant" is a mix-
ture of 50% coolant and 50% deionized
water. (Minimum temperature: -31°F
[-35°C])
Canada:
"Toyota Super Long Life Coolant" is a mix-
ture of 55% coolant and 45% deionized
water. (Minimum temperature: -44°F
[-42°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,
engine/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.
LS500h_OM_OM50F42U_(U)
6-3. Do-it-yourself maintenance
WARNING
When the hybrid system is hot
■
Do not remove the engine/power control
unit coolant reservoir caps. (→P.456)
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 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 condition,
have your vehicle inspected by your
Lexus dealer.
WARNING
■
When the hybrid system is hot
Do not touch the radiator or condenser
as they may be hot and cause serious
injuries, such as burns.
Checking and adding the brake
fluid
Checking fluid level
■
The brake fluid level should be
391
6
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