Service bulletin S2521000005
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11026809 |
| Published by NHTSA | 2025-12-23 |
| Manufacturer's number | S2521000005 |
| Manufacturer's date | 2025-12-17 |
| NHTSA component | SERVICE BRAKES; POWER TRAIN |
NHTSA's summary
The customer states the ABS and Traction Control warning comes on. Vehicle sets wheel speed BSCM/ABS fault codes.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Brakes, Transmission and driveline
| JEEP GRAND CHEROKEE | 2021, 2022, 2023, 2024, 2025, 2026 |
|---|---|
| JEEP GRAND CHEROKEE 4XE | 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| JEEP GRAND CHEROKEE L | 2021, 2022, 2023, 2024, 2025, 2026 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V413000 | 2026-06-30. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL) |
|---|---|
| 2023335 | 2023-06-08. Powertrain |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| S2621000004 | 2026-10-07. Service bulletin. The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines (850RE Transmission Only) |
|---|---|
| S238A000038 REV.D | 2026-09-17. Service bulletin. Auto Emergency Braking (AEB) Unavailable – Service Required Message In Cluster |
| 08-289-26 REV. A | 2026-08-06. Service bulletin. Transmission Control Module (TCM) Diagnostic N/A - This bulletin was released in error. SYMPTOM: |
| 08-289-26 | 2026-07-29. Service bulletin. Transmission Control Module (TCM) Diagnostic Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following DTCs: ● P2797-00 - Auxiliary Transmission Fluid Pump Performance ● P1625-00 - Park Pawl System Failure NOTE: Park system still functions, no impact to park engagement. NOTE: Vehicle will not experience unintended movement. Customers may also experience one or more of the following: ● Vehicle no start due to battery discharge. ● 'Start/stop inop' message. ● 'Service Transmission' message on in Instrument Panel Cluster (IPC). |
| 113528 | 2026-07-23. Service bulletin. SHAFT - AXLE HALF |
| 113529 | 2026-07-23. Service bulletin. SHAFT - AXLE HALF |
| 113123 | 2026-07-08. Service bulletin. SPRING KIT - DISC BRAKE PAD |
| 21-053-26 | 2026-07-08. Service bulletin. Service Transmission Message Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P2797-00 - Auxiliary Transmission Fluid Pump Performance. Customers may also comment on the following: ● Engine Stop-Start (ESS) does not operate. ● "Service Transmission" message displayed in the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly replacing the transmission oil pump motor. |
| 21-041-26 REV. A | 2026-07-02. Service bulletin. Transmission Auxiliary Oil Pump Failure Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set **one or more the following Diagnostic Troubles Code (DTCs): ● U0287-00 - Lost Communication With Transmission Fluid Pump Module 1.** ● P0B0D-00 - Electric/Auxiliary Transmission Fluid Pump Motor Control Module. Customers may also comment on the following: ● Vehicle is in limp mode. This bulletin involves replacing the transmission oil pump. |
| 21-049-26 | 2026-06-16. Service bulletin. Flash: Transmission Control Module (TCM) Updates Customers may experience one or more of the following: ● Intermittently during low‑speed parking maneuvers when the driver moves from Drive (D) to Reverse (R) at the exact moment the Engine Stop/Start (ESS) system shuts the engine off. ● When the timing aligns, the engine will not automatically restart, and the Instrument Panel Cluster (IPC) displays a shift to park to start reated message. ● NOTE: The behavior results from safety logic that prevents the PCM from restarting the engine while the transmission is in an engaged gear. NOTE: No Diagnostic Trouble Codes (DTCs) or Malfunction Indicator Lamp (MIL) are set because the system is functioning as designed. NOTE: This may appear as an ESS stall, but it is actually a controlled inhibit, not a malfunction. NOTE: The condition is difficult to reproduce due to the timing window required. This bulletin involves inspecting and possibly reprogramming the PCM and Transmission Control Module (TCM) with the latest available software. |