TSB: Some 2012 ? 2014 model year Prius V hybrid vehicles may exhibit a condition where the brake,
ABS, and/or TRAC warning light(s) are on and/or a Check VSC message displays. Diagnostic
Trouble Codes (DTCs) C1391, C1252, C1256, or C1253 may be stored. This condition may be
caused by a small internal brake fluid leak inside the brake booster assembly with master
cylinder. Follow the Repair Procedure in this bulletin to address this condition.
