Jeep bulletin S2508000029
What it saysInstrument Panel Cluster (IPC) Message “Park Assist System Unavailable” or “Service Park Assist System”, “Rear Braking Assist Unavailable” or “Service Rear Braking Assist System" with Performance Diagnostic Trouble… NHTSA’s full summary ↓
Jeep filed this with NHTSA as a service bulletin dated Aug 14, 2026, received Apr 22, 2025, about the back over prevention — 3 documents under this number: S2508000029 REV. B, S2508000029 REV. A and 1 more. It names 16 model years (2022–2027). 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 communicationInstrument Panel Cluster (IPC) Message “Park Assist System Unavailable” or “Service Park Assist System”, “Rear Braking Assist Unavailable” or “Service Rear Braking Assist System" with Performance Diagnostic Trouble Codes (DTCs)
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| S2508000029 REV. B | Service bulletin | Aug 14, 2026 | 11036279 | |
| S2508000029 REV. A | Service bulletin | Aug 4, 2026 | 11036180 | |
| S2508000029 | Service bulletin | Apr 18, 2025 | 11017123 | PDF, 288 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.
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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 16 model years this bulletin names have filed 2,242 complaints with NHTSA since 2015. 91 of them name Service Brakes — 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.
On April 20, 2026, my 2025 Jeep Grand Cherokee L was involved in a crash due to a sudden and complete brake failure. At the time of the incident, the vehicle was in the custody of an authorized FCA dealership. An employee of the dealership was operating the vehicle when the brakes completely failed to respond, resulting in an accident.
2025 Jeep Grand Cherokee · Service Brakes · filed with NHTSA May 25, 2026 · ODI 11739926
ABS , Traction Control, Power brake booster, AEB inoperative after routine brake pads/rotor service. Vehicle was put into service mode via touch screen radio, rear brake service performed. Upon initial brake pedal application, required to exit service mode for rear brakes, to return caliper piston contact to brake pad.
2022 Jeep Grand Cherokee · Service Brakes · filed with NHTSA Mar 19, 2025 · ODI 11649367
While waiting at a drive thru, the brakes did not respond when pressed and the car kept moving forward. The emergency braking system also did not respond. The car was placed into park and the car still did not stop. This resulted in hitting the car in front of us in line
2025 Jeep Wagoneer · Service Brakes · filed with NHTSA Sep 4, 2026 · ODI 11762271
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 back over prevention
Source: same model, same component group17 other manufacturer communications filed against these Jeep models under the same component group (back over prevention), newest first. The eight newest are listed; the rest are on the Jeep list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 114283 | Warranty extension | Aug 26, 2026 | ***Recall Completion Prior to Sale of Vehicle*** |
| 114282 | Warranty extension | Aug 26, 2026 | ***Recall Completion Prior to Sale of Vehicle*** |
| 08-135-26 | Service bulletin | Mar 25, 2026 | PROXI Alignment and Drive Calibration: Park Assist Module (PAM) The vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): SY… |
| S2508000012 | Service bulletin | Jun 25, 2025 | Customer Indicates Collision Avoidance System/Blind Spot Alert Cluster Message |
| 0800824A | Service bulletin | Jan 20, 2024 | Radio Over The Air Update to U29.42 Software Version Customers may experience one or more of the following: ? Blank phone widget displayed… |
| 0800124A | Service bulletin | Jan 19, 2024 | Flash: Drivetrain Control Module (DTCM) Updates A moaning, grinding, or groaning type noise while driving between 80 - 112 kph… |
| 1800424 | Service bulletin | Jan 17, 2024 | Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further inves… |
| 0800824 | Service bulletin | Jan 6, 2024 | Radio Over The Air Update to U29.42 Software Version Customers may also experience one or more of the following: ? Blank phone widget disp… |
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 S2508000029 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 S2508000029 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 S2508000029 cover?
The manufacturer filed it against 16 model years: 2027 Jeep Grand Cherokee, 2026 Jeep Grand Cherokee, 2025 Jeep Grand Cherokee, 2024 Jeep Grand Cherokee, 2023 Jeep Grand Cherokee, 2022 Jeep Grand Cherokee and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.