Dodge bulletin 08-356-25
What it saysSecurity 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… NHTSA’s full summary ↓
Dodge filed this with NHTSA as a service bulletin dated Oct 25, 2025, received Oct 29, 2025, about the electrical system. It names 1 model year (2026). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
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.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 08-356-25 | Service bulletin | Oct 25, 2025 | 11024565 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 6 complaints with NHTSA since 2015. 3 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
I am filing a safety defect complaint regarding a 2026 Dodge Charger Daytona (400V electric vehicle platform) that suffered a catastrophic high-voltage system shutdown at approximately 1,261 miles. The vehicle had charge remaining and was being prepared for charging when it experienced a forced EV system shutdown and would not restart.
2026 Dodge Charger · Electrical System · filed with NHTSA Feb 24, 2026 · ODI 11720267
The contact owns a 2026 Dodge Charger. The contact stated that the vehicle failed to start after refueling. Another motorist attempted to assist the contact with jumpstarting the vehicle; however, the vehicle failed to start and was towed to a dealer.
2026 Dodge Charger · Electrical System · filed with NHTSA Aug 6, 2026 · ODI 11755271
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group203 other manufacturer communications filed against the Dodge Charger under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Dodge list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 08-401-26 | Service bulletin | Oct 24, 2026 | Flash: Radio Frequency Hub Module (RFHM) Update Customers may comment on the following: SYMPTOM: ● Driver and passenger doors do not lock or… |
| 08-400-26 | Service bulletin | Oct 24, 2026 | Flash: Body Control Module (BCM) Update Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPT… |
| 08-399-26 | Service bulletin | Oct 24, 2026 | Flash: Radio Frequency Hub Module (RFHM) Update Customers may comment on the following: SYMPTOM: ● Driver and passenger doors do not lock or… |
| 08-398-26 | Service bulletin | Oct 24, 2026 | Flash: Body Control Module (BCM) Update Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPT… |
| 08-395-26 | Service bulletin | Oct 23, 2026 | Flash: Driver Door Module (DDM) and Passenger Door Module (PDM) Update Customers may experience the following: SYMPTOM: ● Driver and/or pass… |
| 08-394-26 | Service bulletin | Oct 23, 2026 | Flash: Driver Door Module (DDM) and Passenger Door Module (PDM) Update Customers may experience the following: SYMPTOM: ● Driver and/or pass… |
| 08-393-26 | Service bulletin | Oct 23, 2026 | Flash: Driver Door Module (DDM) and Passenger Door Module (PDM) Update Customers may experience one or more of the following: SYMPTOM: ● **D… |
| 08-392-26 | Service bulletin | Oct 23, 2026 | Flash: Driver Door Module (DDM) and Passenger Door Module (PDM) Update Customers may experience one or more of the following: SYMPTOM: ● **D… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Dodge, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Dodge 08-356-25 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 08-356-25 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Stellantis warranty extension on file lists the ones Stellantis has filed.
Which vehicles does 08-356-25 cover?
The manufacturer filed it against 1 model year: 2026 Dodge Charger. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built on or before 8 Sep 2025 — the build date is on the certification label in the driver’s door jamb.