# Service bulletin L\-TT\-0348\-25

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: 11022957
- Published by NHTSA: 2025\-09\-09
- Manufacturer's number: L\-TT\-0348\-25
- Manufacturer's date: 2025\-08\-15
- Campaign id or software version: L\-TT\-0348\-25
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

Customers state Parking Brake efficiency concerns. The conditions can include the following: • The PKB Pedal feels loose or requires full depression for proper engagement. • Ineffective on steep surfaces, allowing the vehicle to roll with transmission in Neutral. • Ineffective on steep surfaces, allowing the vehicle to roll slightly with transmission in Park. \[Transmission Dependency\]

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022957-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022957-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- 2020 to 2023 LEXUS GX

## Other bulletins for the same vehicles and component

- [L\-TT\-0348\-25 Rev1](/bulletins/11028724.md), 2026-02-11, Service bulletin: SERVICE BRAKES. Customers state Parking Brake efficiency concerns. The conditions can include the following: • The Parking Brake Pedal feels loose or requires full depression for proper engagement. • When not fully depressed, effectiveness on steep surfaces may be reduced, allowing the vehicle to roll with transmission in Neutral. • When not fully depressed, effectiveness on steep surfaces may be reduced, allowing the vehicle to roll slightly with transmission in Park.

JSON: [/v1/bulletins/11022957](/v1/bulletins/11022957)

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