Lexus CT200h Owner's Manual page 610

5-2. Steps to take in an emergency
Stop the vehicle immediately.
A buzzer sounds and a warning message is shown on the multi-informa-
tion display. 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 message
610
CT200h_U (OM76040U)
Details
Indicates a malfunction in the hybrid system