Jeep bulletin 21-042-26
What it saysNot applicable to vehicles built for US market. 1.5L Transmission Diagnosis Service Solution Customers may experience one or more of the following: SYMPTOM: Transmission warning light on and/or vehicle jerking. NHTSA’s full summary ↓
Jeep filed this with NHTSA as a service bulletin dated Sep 19, 2026, received Jun 3, 2026, about the power train — 3 documents under this number: 21-042-26 REV. B, 21-042-26 REV. A and 1 more. It names 10 model years (2021–2025). 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 NHTSA’s summary states it — build dates and equipment as the manufacturer filed them. The dealer checks the VIN and the build date on the door jamb; a vehicle outside the window is not covered by this bulletin.
Not applicable to vehicles built for US market. 1.5L Transmission Diagnosis Service Solution Customers may experience one or more of the following: SYMPTOM: ● Transmission warning light on and/or vehicle jerking. ● Vehicle is not shifting correctly or has no traction. This service bulletin is to provide a diagnostic guide for a transmission warning light on, vehicle jerking, not shifting correctly or no traction symptoms.
Trouble codes it names: P08F2 P08F3 P0A7D P0AF8 P2787 P27F3 P284D P28C7 P28D5 all 9 read from the document itself; NHTSA’s summary names none
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 21-042-26 REV. B | Service bulletin | Sep 19, 2026 | 11037469 | |
| 21-042-26 REV. A | Service bulletin | Jun 30, 2026 | 11034905 | |
| 21-042-26 | Service bulletin | May 28, 2026 | 11033330 |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 18-19-05-92 | Multi Module Flash | 0.7 hrs |
Read by machine from the document NHTSA serves (3 pages), read Oct 5, 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 themAlso filed against model years this site has no page for: 2024 Jeep Renegade; 2025 Jeep Renegade.
A 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 8 model years this bulletin names have filed 558 complaints with NHTSA since 2015. 30 of them name 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.
The contact owned a 2021 Jeep Renegade. The contact stated that while driving approximately 70 MPH, the transmission erroneously shifted into the neutral, causing the vehicle to abruptly decelerate. The vehicle was later towed to the local dealer, but no service was performed, and the cause of the failure was not yet determined.
2021 Jeep Renegade · Power Train · filed with NHTSA Jun 20, 2024 · ODI 11595477
The contact owns a 2023 Jeep Compass. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle jerked. The contact heard a whining sound when the transmission shifted. The vehicle was taken to the dealer however, the failure could not be duplicated.
2023 Jeep Compass · Power Train · filed with NHTSA Jul 1, 2024 · ODI 11597983
The contact owns a 2024 Jeep Compass. The contact stated that while driving approximately 40 MPH, the vehicle stalled and started jerking, with the battery warning light illuminated. The contact stated that the steering wheel was shaking abnormally during the failure. The vehicle was restarted.
2024 Jeep Compass · Power Train · filed with NHTSA Oct 14, 2025 · ODI 11693307
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 group36 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 |
|---|---|---|---|
| 21-063-26 | Service bulletin | Sep 25, 2026 | Not applicable to vehicles built for US market. Fault Code P120F-00 Present In Hybrid The vehicle may illuminate the Malfunction Indicator L… |
| 21-061-26 | Service bulletin | Sep 25, 2026 | Not applicable to vehicles built for US market. Park Lock Piston Leaking Customers may comment on the following: SYMPTOM: ● Power loss - jer… |
| 21-059-26 | Service bulletin | Aug 4, 2026 | Not applicable to vehicles built for US market. Gear Changing Issue The customer must describe the following: SYMPTOM: ● Poor driveability/s… |
| 21-058-26 | Service bulletin | Jul 21, 2026 | Transmission Oil Pump - Service Transmission Message Customers must experience a Malfunction Indicator Lamp (MIL) illumination, and the vehi… |
| 21-050-26 | Service bulletin | Jun 6, 2026 | Not applicable to vehicles built for US market. Vehicle Will Not Start With Display Of The Message "Electric Traction System Fault" Customer… |
| 21-048-26 | Service bulletin | Jun 3, 2026 | Not applicable to vehicles built for US market. No Switching To Electric Mode The customer must describe the following: ● Vehicle not switch… |
| 21-046-26 | Service bulletin | Jun 3, 2026 | Not applicable to vehicles built for US market. Time To Change From Reverse Gear To Drive Gear Excessive Customers may experience the follow… |
| 21-045-26 | Service bulletin | Jun 3, 2026 | Not applicable to vehicles built for US market. Whining Noise From The Transmission Whining noise from the transmission |
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 21-042-26 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 21-042-26 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 21-042-26 cover?
The manufacturer filed it against 10 model years: 2025 Jeep Compass, 2024 Jeep Compass, 2023 Jeep Compass, 2022 Jeep Compass, 2021 Jeep Compass, 2023 Jeep Renegade and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.