2011-2015 Toyota Prius and Prius PHV ABS Brake Warning Light On


Some 2011 – 2015 model year Prius and 2012 – 2015 model year Prius Plug-in 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, and 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 bulletin T-SB-0024-19 to address this condition.

R & R Brake Booster Assembly With Master Cylinder and R & R Brake Booster Pump Assembly

This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle’s in-service date.