Chrysler bulletin 2100624
What it saysFlash: Transmission Control Module (TCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. NHTSA’s full summary ↓
Chrysler filed this with NHTSA as a service bulletin dated Jan 10, 2024, received Mar 18, 2024, about the exterior lighting. It names 1 model year (2022). 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 communicationFlash: Transmission Control Module (TCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: ? P0729-00 - Automatic Transmission 6th Gear Incorrect Ratio. The customer may also experience one or more of the following: ? Vehicle is in limp mode. ? Rough shift. This bulletin involves reprogramming the TCM with the latest available software.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 2100624 | Service bulletin | Jan 10, 2024 | 10251840 | not found |
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 5 complaints with NHTSA since 2015. 2 of them name Electrical System, Power Train — 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.
Just had this problem on my 2019 Chrysler 300. Recall came years after I had it and after I sold it. I got lucky and found out and got a reimbursement for the repair. Recall issued for "faulty Diode on Alternator". Very dangerous b/c the car will just cut out on you when you are trying to accelerate... like crossing a road etc.
2022 Chrysler 300 · Electrical System · filed with NHTSA Mar 19, 2025
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.
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chrysler, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Chrysler 2100624 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 2100624 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.
Which vehicles does 2100624 cover?
The manufacturer filed it against 1 model year: 2022 Chrysler 300. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.