Lexus LS 600h L 2015 Owner's Manual page 447

Coolant
Engine coolant reservoir
■
The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the hybrid system is cold.
Reservoir cap
1
"FULL" line
2
"LOW" line
3
If the level is on or below the
"LOW" line, add coolant up to the
"FULL" line. (P. 530)
LS600hL_U(OM50E41U)
6-3. Do-it-yourself maintenance
445
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