Dodge bulletin 21-036-24
What it says"Flash: Transmission Control Module (TCM) Updates Customers may experience: Shift paddles will not work when the shifter is in Drive. NHTSA’s full summary ↓
Dodge filed this with NHTSA as a service bulletin dated Sep 5, 2024, received Jun 7, 2024, about the power train — 2 documents under this number: 21-036-24 REV. A and 1 more. It names 1 model year (2024). 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.
"Flash: Transmission Control Module (TCM) Updates Customers may experience: ● Shift paddles will not work when the shifter is in Drive. Shift paddles only work when the transmission is in manual mode. This bulletin involves reprogramming the TCM with the latest available software."
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 21-036-24 REV. A | Service bulletin | Sep 5, 2024 | 11007641 | PDF, 123 KB |
| 21-036-24 | Service bulletin | May 21, 2024 | 11001285 | PDF, 133 KB |
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 79 complaints with NHTSA since 2015.
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 power train
Source: same model, same component group5 other manufacturer communications filed against the Dodge Hornet under the same component group (power train), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 18-038-24 REV. A | Service bulletin | Dec 13, 2024 | "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mu… |
| 18-037-24 REV. B | Service bulletin | Nov 23, 2024 | "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mu… |
| 21-045-24 | Service bulletin | Sep 12, 2024 | "Flash: Transmission Control Module (TCM) Updates - P0610 - ECU Vehicle Options Mismatch Technicians must experience a Malfunction Indicator… |
| S2408000083 | Service bulletin | Jul 26, 2024 | Malfunction Indicator Lamp (MIL) on, Start Stop Does Not Operate, Vehicle May Not Start |
| S2305000003 | Service bulletin | Aug 2, 2023 | P0258B Electric Vacuum Pump (EVP) Performance Diagnostic Trouble Code (DTC) |
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 21-036-24 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 21-036-24 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 21-036-24 cover?
The manufacturer filed it against 1 model year: 2024 Dodge Hornet. 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 21 Mar 2024 — the build date is on the certification label in the driver’s door jamb.