Lexus LS600hl - Page 833

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6-3. Do-it-yourself maintenance
LS600h/LS600hL_EE(OM50D61E)
 Power control unit coolant reservoir
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
“F” line
“L” line
If the level is on or below the
“L” line, add coolant up to the
“F” line. (P. 906)
 Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality eth-
ylene glycol based non-silicate, non-amine, non-nitrite, and non-borate cool-
ant with long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Minimum temperature: -35C [-31F])
For more details about coolant, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
 If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reser-
voir caps, drain cock and water pump.
If you cannot find a leak, have any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
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