Lexus LS 460 2017 Manual page 547

Engine coolant
The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the engine 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. 641)
6-3. Do-it-yourself maintenance
547
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