Lexus HS 250 Hybrid 2010–2012 — technical service bulletin
Bulletin L-SB-0013-23 · NHTSA communication 10234306 · issued Mar 2, 2023
Technical service bulletin
communication type
Electronic Stability Control
component
2010–2012
model years
3
vehicle entries
Official summary
TSB: Some 2010 ? 2012 model year HS 250h 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 veri+G4fication. This condition may be caused by a small brake fluid leak inside the brake booster assembly with master cylinder. Follow the Repair Procedure in this bulletin to address this condition.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.