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Service bulletin L-SB-0036-21 Rev

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10211805
Published by NHTSA2022-05-16
Manufacturer's numberL-SB-0036-21 Rev
Manufacturer's date2022-04-11
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING; EQUIPMENT

NHTSA's summary

TSB: Some 2020 model year ES 350, ES 300h, UX 200, and UX 250h vehicles may exhibit one or more of the following conditions: ?Diagnostic Trouble Code (DTC) B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Lexus app does not accept the activation code. ?Lexus app is inoperative. ?SOS call center does not receive the vehicle?s location in a timely manner. ?Lexus app shows an error 42 when trying to execute a command. ?Unable to remote start the vehicle with the key fob (if equipped). ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Destination Assist is inoperative Some 2020 ? 2021 model year ES 350, ES 300h, UX 200, and UX 250h vehicles may exhibit one or more of the following conditions: ?DTC B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Lexus App is inoperative. ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Depleted 12V vehicle battery when in IG-OFF. Some 2020 ? 2021 model year ES 350, ES 300h, UX 200, and UX 250h and 2021 model year ES 250 vehicles may exhibit one or more of the following conditions: ?Depleted 12V vehicle battery when in IG-OFF. Some 2020 ? 2021 model year ES 350, ES 300h, UX 200, and UX 250h and 2021 model year ES 250 vehicles may exhibit one or more of the following conditions: ?Remote Engine Start inoperative (fob and app). ?Remote Engine Start inoperative (app only). ?B15CC49 backup battery malfunction. ?Power Door Lock inoperative (app and fob). Some 2020 ? 2022 model year ES 350, ES 300h, UX 200, and UX 250h, 2021 ? 2022 model year ES 250 vehicles may exhibit one or more of the following conditions: ?Connected Services inoperative. ?Safety Connect calls not completing intermittently. ?DCM signal strength grayed OUT on head unit with strike through. DCM reset and firmware update is now available to address these conditions.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine, Equipment and accessories, 12-volt battery

Trouble codes named

B15A8, B15CC

Vehicles listed
LEXUS ES HYBRID2020 to 2022
LEXUS ES2502021 to 2022
LEXUS ES3502020 to 2022
LEXUS UX HYBRID2020 to 2022
LEXUS UX2002020 to 2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.