TSB:Some 2015 ? 2017 model year Prius C vehicles may exhibit a condition where the brake, ABS,
and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the
following Diagnostic Trouble Codes (DTCs): C1391, C1252, C1256, or C1253 will be stored in the
vehicle memory to be used as verification. This condition may be caused by a small internal brake
fluid leak inside the brake actuator. Follow the Repair Procedure in this bulletin to address
this condition.
