If Your Vehicle Overheats - Lexus CT200h Owner's Manual

5-2. Steps to take in an emergency

If your vehicle overheats

The following may indicate that your vehicle is overheating:
 The high coolant temperature warning light (P. 572) comes
on or flashes, or a loss of hybrid system power is experienced.
(For example, the vehicle speed does not increase.)
 "HYBRID SYSTEM OVERHEAT" (P. 586) is shown on
the multi-information display.
 Steam comes out from under the hood.
Correction procedures

If the high coolant temperature warning light comes on or
flashes
STEP 1
Stop the vehicle in a safe place and turn off the air condi-
tioning system, and then stop the hybrid system.
STEP 2
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
STEP 3
CT200h_OM_OM76067E_(EE)
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radiator
core (radiator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact any
authorized Lexus dealer or
repairer, or another duly quali-
fied and equipped professional.
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