# Service bulletin L\-SB\-0020\-26 Rev1

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: 11038379
- Published by NHTSA: 2026\-10\-08
- Manufacturer's number: L\-SB\-0020\-26 Rev1
- Manufacturer's date: 2026\-09\-11
- Campaign id or software version: L\-SB\-0020\-26 Rev1
- NHTSA component: ENGINE

## NHTSA's summary

Some 2026 model year RZ 350e, RZ 450e, and RZ 550e vehicles may exhibit the Diagnostic Trouble Code \(DTC\) U25521F associated with the level 3 DC fast charging. Under certain conditions, charging may either operate normally or experience failure, with a charging malfunction message displayed on the Multi\-Information Display \(MID\). This condition is attributed to a control logic issue and potential voltage drop affecting Plug\-In Charge Control Computer Assembly functionality. The control logic has been modified to reduce the possibility of this condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038379-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038379-9999.pdf)

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

## Components

Engine

## Trouble codes named

U2552

## Vehicles listed

- 2026 LEXUS RZ

## Other bulletins for the same vehicles and component

- [L\-TT\-0350\-26](/bulletins/11036130.md), 2026-08-12, Service bulletin: ENGINE. State of Health \(SOH\): An estimate of battery health that is updated as the vehicle learns from operating and charging conditions over time. Distance Since Last Update: Indicates the distance accumulated since the last SOH calculation. A default mileage value of 40,727 at SOH 100% may be displayed until sufficient vehicle learning is completed. Once SOH value updates from 100%, the Distance Since Last Update value will re\-set to 0 miles. Both SOH and Distance Since Last Update values will continue to update as the vehicle continues to learn.
- [L\-SB\-0020\-26](/bulletins/11036125.md), 2026-08-12, Service bulletin: ENGINE. Some 2026 model year RZ 350e, RZ 450e, and RZ 550e vehicles may exhibit the Diagnostic Trouble Code \(DTC\) U255221F associated with the level 3 DC fast charging. Under certain conditions, charging may either operate normally or experience failure, with a charging malfunction message displayed on the Multi\-Information Display \(MID\). This condition is attributed to a control logic issue and potential voltage drop affecting Plug\-In Charge Control Computer Assembly functionality. The control logic has been modified to reduce the possibility of this condition.
- [L\-TT\-0349\-26](/bulletins/11031152.md), 2026-04-08, Service bulletin: ENGINE. Some Customers for the listed vehicles may have complaint of the following: unable to charge the vehicle using the supplied level 1 or 2 charger. Additionally, most will indicate one or more of the LEDs on the charger will illuminate at the time of no charge. Charging at other stations is still possible.

JSON: [/v1/bulletins/11038379](/v1/bulletins/11038379)

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