# Service bulletin L\-SB\-0028\-26

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11038392
- Published by NHTSA: 2026\-10\-08
- Manufacturer's number: L\-SB\-0028\-26
- Manufacturer's date: 2026\-09\-30
- Campaign id or software version: L\-SB\-0028\-26
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

Some 2018 – 2023 model year LC 500, and LC 500h, 2021 – 2023 model year LC 500c, 2018 – 2023 model year LS 500, and LS 500h, 2015 model year RX 450h, and 2018 – 2022 model year RX 450h vehicles may exhibit a condition in which the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the following specific Diagnostic Trouble Codes \(DTCs\) C1391, C1252, C1256, and/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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038392-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038392-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes

## Trouble codes named

C1252, C1253, C1256, C1391

## Vehicles listed

- 2018 to 2023 LEXUS LC
- 2018 to 2023 LEXUS LC HYBRID
- 2018 to 2023 LEXUS LS
- 2018 to 2023 LEXUS LS HYBRID
- 2015 LEXUS RX HYBRID
- 2018 to 2022 LEXUS RX HYBRID

## Other bulletins for the same vehicles and component

- [L\-SB\-0013\-20 Rev2](/bulletins/11028716.md), 2026-02-11, Service bulletin: SERVICE BRAKES. OBSOLETE NOTICE January 22, 2026: This bulletin is now obsolete. Please see L\-SB\-0003\-26.
- [L\-SB\-0003\-26](/bulletins/11028715.md), 2026-02-11, Service bulletin: SERVICE BRAKES. Certain 2018 – 2026 model year LC 500 and 2018 – 2025 LC 500h vehicles are equipped with high\-friction brake pads specifically designed for superior braking performance and response. As a result, the front or rear brakes may exhibit a squeal/squeak noise. For customers who find these characteristics objectionable, brake pads with alternative material are now available as service parts.
- [L\-SB\-0013\-22 Rev](/bulletins/10253239.md), 2024-04-15, Service bulletin: SERVICE BRAKES. TSB: Some 2018 ? 2023 model year LS 500 and LS 500h vehicles may exhibit a knock/clunk noise from the rear of the vehicle when applying the brakes while driving forward and/or in reverse. The noise is most noticeable when coming to a complete stop. Improved rear brake pads are available to correct this condition.

JSON: [/v1/bulletins/11038392](/v1/bulletins/11038392)

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