Condition where the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays

Bulletin number

T-SB-0013-23

Component

Electronic stability control: automatic (ASC)

Summary

TSB: Some 2016 ? 2018 model year Prius V 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, and/or C1253 will be stored in the vehicle?s memory to be used as verification. This condition may be caused by a small brake fluid leak inside the brake booster assembly with master cylinder.

Owners of these vehicles have filed 2 complaints in the driver assistance category.