Service bulletin 08-356-25

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	11024565
Published by NHTSA	2025-10-29
Manufacturer's number	08-356-25
Manufacturer's date	2025-10-25
NHTSA component	ELECTRICAL SYSTEM

NHTSA's summary

Security Gateway Module (SGW) Software UpdateCustomers must comment on the following: The following software enhancements are available: ● Diagnostic Trouble Code (DTC) U3033-00 - Control Module Security Certificate Missing/Invalid and U3033-01 - Control Module Security Certificate Missing/Invalid - General Electrical Failure are both active or stored and cannot clear. This DTC will not turn on the Malfunction Indicator Light (MIL). ● If a Firmware Over The Air (FOTA) message appears specifically directing the customer to service OR repeated FOTA events are not being completed, then a manual flash is required for the SGW update. ● SGW module is not responding to diagnostics and is showing offline This bulletin involves flashing the SGW to the latest software level in the case that the FOTA did not function.

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

Trouble codes named

U3033

Vehicles listed
DODGE CHARGER	2026

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

Other bulletins for the same vehicles and component
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08-175-26 REV. A	2026-08-26. Service bulletin. Flash: Body Control Module (BCM) Update Technicians may find the following Diagnostic Trouble Code (DTC): SYMPTOM: ● B18AA-11 - Trunk/Gate Unlock Control 1-Circuit Short to Ground. NOTE: There are no Malfunction Indicator Lamp (MIL) illumination or related messages displaying in the Instrument Panel Cluster (IPC) for this symptom. Hatch event only occurs on BEV vehicles without JRC for Power Hatch. Customers may comment on the following: ● Battery is depleted. ● When at a full stop and the Engine Stop Start (ESS) has turned off the engine, the engine does not automatically restart once the brake pedal is released. This is accompanied by a chime and a pop-up message on the IPC indicating ESS has aborted. The vehicle can be restarted once shifted into Park and pressing the ignition button. NOTE: These symptoms occur due to the BCM sending an incorrect hood position message. The ESS event only occurs on ICE equipped vehicles. ● The hatch will not open when a release button (interior, exterior, or Frequency Operated Button Integrated Key (FOBIK)) is pressed. NOTE: Hatch event only occurs on BEV vehicles without JRC for Power Hatch. This bulletin involves inspecting and possibly reprogramming the BCM with the latest available software.