Lexus CT200H Manual page 505

Coolant
The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the hybrid system is cold.

Engine coolant reservoir
1
Reservoir cap
2
"FULL" line
3
"LOW" line
If the level is on or below the
"LOW" line, add coolant up to
the "FULL" line. (P. 628)

Power control unit coolant reservoir
1
Reservoir cap
2
"FULL" line
3
"LOW" line
If the level is on or below the
"LOW" line, add coolant up to
the "FULL" line. (P. 628)

Coolant selection
Only use "Toyota Super Long Life Coolant" or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
"Toyota Super Long Life Coolant" is a mixture of 50% coolant and 50% deion-
ized 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 reservoir
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.
CT200h_OM_OM76102E_(EE)
7-3. Do-it-yourself maintenance
501
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