Lexus LS 600h L 2015 Owner's Manual page 448

446
6-3. Do-it-yourself maintenance
Power control unit coolant reservoir
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The coolant level is satisfactory if it is between the "F" and "L" lines on
the reservoir when the hybrid system is cold.
Reservoir cap
1
"F" line
2
"L" line
3
If the level is on or below the "L"
line, add coolant up to the "F" line.
(P. 530)
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 mixture of 50% coolant and 50% deionized
water. (Minimum temperature: -31F [-35C])
Canada:
"Toyota Super Long Life Coolant" is a mixture 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.
LS600hL_U(OM50E41U)