Jeep bulletin 08-307-26
What it saysAWD Drivetrain Control Module (DTCM) Reconfiguration Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble… NHTSA’s full summary ↓
Jeep filed this with NHTSA as a service bulletin dated Aug 5, 2026, received Aug 13, 2026, about the power train. 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.
AWD Drivetrain Control Module (DTCM) Reconfiguration Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● C0094-4B - 4WD/AWD Rear Differential Unit Temperature Sensor-over Temperature. ● C149B-98 - RDM-Component Or System Over Temperature. Customers may also experience one or more of the following: ● Poor AWD performance. ● 4WD Light illumination. This bulletin involves reconfiguring the DTCM.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 08-307-26 | Service bulletin | Aug 5, 2026 | 11036153 |
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 Power Train, 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.
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 group17 other manufacturer communications filed against the Jeep Cherokee 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 |
|---|---|---|---|
| 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… |
| 03-001-26 | Service bulletin | Jul 9, 2026 | Unable to Complete 01C Recall Drive Cycle C14A7-97 Active Technicians may experience the following: SYMPTOM: ● After performing Recall 01C… |
| 9100819 | Service bulletin | May 26, 2026 | If VIN is built before CP: April 28th, 2026, please order 06514796AA (Transmission bolts) along when replacing or servicing transmission ass… |
| 21-027-26 | Service bulletin | Apr 11, 2026 | Two Speed Power Transfer Unit Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibi… |
| ID-26-22 MIDDLE EAST & AFRICA | Warranty extension | Apr 8, 2026 | (XX1) Two Speed Power Transfer Unit (PTU) - Select 2017 - 2019 Jeep Cherokee (KL) |
| ID-26-21 | Warranty extension | Apr 8, 2026 | (XX1) Two Speed Power Transfer Unit (PTU) - Select 2017 - 2019 Jeep Cherokee (KL) |
| ID-26-21 ENLARGED EUROPE | Warranty extension | Apr 8, 2026 | (XX1) Two Speed Power Transfer Unit (PTU) - Select 2017 - 2019 Jeep Cherokee (KL) |
| ID-26-20 APAC | Warranty extension | Apr 8, 2026 | (XX1) Two Speed Power Transfer Unit (PTU) - Select 2017 - 2019 Jeep Cherokee (KL) |
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 08-307-26 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 08-307-26 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.
Which vehicles does 08-307-26 cover?
The manufacturer filed it against 1 model year: 2026 Jeep Cherokee. 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 after 2 Jan 2025; built on or before 16 Jul 2026 — the build date is on the certification label in the driver’s door jamb.