Jeep bulletin 18-084-24
What it says"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs)… NHTSA’s full summary ↓
Jeep filed this with NHTSA as a service bulletin dated Nov 13, 2024, received Nov 18, 2024, about the power train. It names 2 model years (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 communication"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P018B-00 - Fuel Pressure Sensor ""B"" Circuit Range/performance. ● P1CEA-00 - Boost Side Evap Purge System Performance. ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/stuck Off. The following software update is also available: ● Poor AC performance in hot ambient temperatures. ● Engine speed display improvement for tachometer on the Instrument Panel Cluster (IPC) - smoother tachometer display (previous was too active). ● Prevent false fails with MIL on. This bulletin involves reprogramming the PCM with the latest available software."
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 18-084-24 | Service bulletin | Nov 13, 2024 | 11010635 | PDF, 132 KB |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 18-19-06-94 | Module, Powertrain Control (PCM) - Reprogram | 0.3 hrs |
Read by machine from the document NHTSA serves (2 pages), read Sep 30, 2026. A part number is shown only where it matches Jeep’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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 2 model years this bulletin names have filed 135 complaints with NHTSA since 2015. 108 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.
While driving the Wagoneer it shut down in the middle of road while at a stop light, and did a “hard” reset where all the systems had to boot back up before being able to start the Jeep. I reached out to local Jeep and to Service, and was told to bring it down so that they could run a scan.
2024 Jeep Wagoneer · Electrical System · filed with NHTSA Nov 1, 2026 · ODI 11774976
The contact owns a 2024 Jeep Wagoneer S. The contact stated that while the vehicle was parked, the vehicle unexpectedly shifted to reverse(R) and rolled backwards unintendedly at approximately 10 MPH. The brake pedal was pumped several times to stop the vehicle.
2024 Jeep Wagoneer · Power Train · filed with NHTSA Jul 2, 2026 · ODI 11748043
Screens keep shutting off or freezing. Makes a buzzing noise through the speakers on occasion. Happens almost daily and sometimes multiple times a day
2024 Jeep Grand Wagoneer · Electrical System · filed with NHTSA Oct 25, 2026 · ODI 11773475
In depth: 2024 Jeep Wagoneer electrical problems →
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 group60 other manufacturer communications filed against these Jeep models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Jeep list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 114477 | Service campaign | Sep 4, 2026 | Revised Customer Satisfaction Notification 74D – Powertrain Modules Software Update Dealer Notification The powertrain modules software on a… |
| 114026 | Service campaign | Aug 12, 2026 | CUSTOMER SATISFACTION NOTIFICATION NORTH AMERICA Powertrain Modules Software Update 80D The powertrain modules software on about 3,300… |
| 114025 | Service campaign | Aug 12, 2026 | CUSTOMER SATISFACTION NOTIFICATION NORTH AMERICA Powertrain Modules Software Update 79D The powertrain modules software on about 36 of the a… |
| 114023 | Service campaign | Aug 12, 2026 | CUSTOMER SATISFACTION NOTIFICATION NORTH AMERICA Powertrain Modules Software Update 74D SYMPTOM DESCRIPTION The powertrain modules software… |
| 79D | Service campaign | Aug 1, 2026 | CUSTOMER SATISFACTION NOTIFICATION NORTH AMERICA Powertrain Modules Software Update 79D The powertrain modules software on about 36 of the a… |
| 74D | Service campaign | Aug 1, 2026 | CUSTOMER SATISFACTION NOTIFICATION NORTH AMERICA 74D Powertrain Modules Software Update The powertrain modules software on about 18,900 of t… |
| 08-289-26 | Service bulletin | Jul 30, 2026 | Transmission Control Module (TCM) Diagnostic Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must S… |
| 9100870 | Service bulletin | Jul 27, 2026 | DIFFERENTIAL Rear Axle If replacing the Rear axle and going from AA to AC level, the bolt hole on the top of the axle will not have threads… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Jeep, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Jeep 18-084-24 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 18-084-24 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 18-084-24 cover?
The manufacturer filed it against 2 model years: 2024 Jeep Grand Wagoneer, 2024 Jeep Wagoneer. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.