Lexus CT200h Owner's Manual page 597

Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehicle
that may lead to an accident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Warning light
CT200h_U (OM76040U)
Warning light/Details
Charging system warning light
Indicates a malfunction in the vehicle' s charging system
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low
High coolant temperature warning light
Changes from a flashing to a solid light when the engine
coolant temperature increases
5-2. Steps to take in an emergency
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