2010 Toyota Prius Owners Manual - Page 530

5 -2 . St e ps t o t a k e in a n e m e rge nc y I f a w a r ning m e ssa ge is displa ye d If a warning is shown on the multi-information display, stay calm and perform the following actions: Master warning light Multi-information display The master warning light also comes on or flashes in order to indicate that a message is currently being displayed on the multi-information display. ITO52P158 If any of the warning light turns on again after performing the following actions, contact your Toyota dealer. 508