Toyota Prius c 2014 Owner's Manual page 375

Coolant
Engine coolant reservoir
The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the engine is cold.
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.
4-3. Do-it-yourself maintenance
Reservoir cap
"FULL" line
"LOW" line
If the level is on or below the
"LOW" line, add coolant up to the
"FULL" line. (→P. 487)
Reservoir cap
"F" line
"L" line
If the level is on or below the "L"
line, add coolant up to the "F" line.
(→P. 487)
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