Lexus GS450h Owner's Manual page 409

Coolant
The coolant level is satisfactory if it is between the "FULL"/"F" and "LOW"/"L"
lines on the reservoir when the hybrid system is cold.
Engine coolant reservoir
■
Reservoir cap
1
"FULL" line
2
"LOW" line
3
GS450h

If the level is on or below the "LOW" line, add coolant up to the "FULL" line.
(P. 535)
Power control unit coolant reservoir
■
GS450h

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. 535)
GS450h_300h_OM_OM30F92E_(EE)
6-3. Do-it-yourself maintenance
GS300h

GS300h

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. 535)
409
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