# Service bulletin 21\-004\-25

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: 11012829
- Published by NHTSA: 2025\-01\-14
- Manufacturer's number: 21\-004\-25
- Manufacturer's date: 2025\-01\-11
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN
- Manufacturer's system: Transmission Control Module

## NHTSA's summary

"Flash: Transmission Control Module \(TCM\) 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 \(DTCs\): ● P06E4 \- Control Module Wake\-up Circuit Performance. ● B12B4 \- Charge Status Indicator Module Internal. ● P061B \- Internal Control Module Torque Calculation Performance. ● P0810 \- Clutch Position Control Error. ● P2885 \- Engine Disconnect Clutch Engagement Fault. Customers may experience one or more of the following: ● Vehicle loses propulsion capability. ● 'Shift To Park' notification on. ● 'Service Transmission' warning light on. ● Requires key cycle to recover. ● Shifts rough occasionally. ● Harsh shifts when tipping in during a coast down. ● Shifts roughly during coast down. This bulletin involves reprogramming the Transmission Control Module \(TCM\), Powertrain Control \(PCM\) and the Auxiliary Hybrid Control Processor \(AHCP\) also known as Power Inverter Module \(PIM\) or reprogramming the TCM and PCM only with the latest available software"

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11012829-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11012829-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Transmission and driveline

## Trouble codes named

B12B4, P061B, P06E4, P0810, P2885

## Vehicles listed

- 2024 JEEP WRANGLER 4XE

## Recalls for the same vehicles and component

- [25V741000](/recalls/nhtsa/25V741000.md), 2025-10-30: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [25V710000](/recalls/nhtsa/25V710000.md), 2025-10-17: ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE \(HPCU\):SOFTWARE
- [24V871000](/recalls/nhtsa/24V871000.md), 2024-11-19: EXTERIOR LIGHTING; ELECTRICAL SYSTEM:WIRING
- [24V720000](/recalls/nhtsa/24V720000.md), 2024-09-27: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [24V652000](/recalls/nhtsa/24V652000.md), 2024-09-05: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

## Other bulletins for the same vehicles and component

- [S2608000038](/bulletins/11038557.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
- [08\-355\-26](/bulletins/11038545.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. Flash: Drivetrain Control Module \(DTCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● C147B\-92 \- Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are displayed in the Instrument Panel Cluster \(IPC\). ● The vehicle does not engage 4WD properly. This bulletin involves reprogramming the DTCM with the latest available software.
- [S2608000038](/bulletins/11038520.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
- [08\-355\-26](/bulletins/11038508.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. Flash: Drivetrain Control Module \(DTCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● C147B\-92 \- Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are displayed in the Instrument Panel Cluster \(IPC\). ● The vehicle does not engage 4WD properly. This bulletin involves reprogramming the DTCM with the latest available software.
- [S2621000004](/bulletins/11038329.md), 2026-10-07, Service bulletin: POWER TRAIN. 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 \(850RE Transmission Only\)
- [114741](/bulletins/11037596.md), 2026-09-30, Service bulletin: POWER TRAIN. TRANSMISSION KIT \- WITH TORQUE CONVERTER
- [114749](/bulletins/11037591.md), 2026-09-30, Service bulletin: ELECTRICAL SYSTEM. CHARGER \- BATTERY
- [S2623000048 REV.A](/bulletins/11037353.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM; SEATS. Customer States Driver Seat inoperative. Seat Fuse F59 30A Found blown.
- [9100900](/bulletins/11037346.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [9100872](/bulletins/11035991.md), 2026-08-06, Service bulletin: ELECTRICAL SYSTEM. Display Exchange part has been superseded. Order the latest Z part number: Z8607669AC \-\-\> Z8791155AA \(Active Exchange Part\) Z8607669AD \-\-\> Z8791669AA \(Active Exchange Part\) Z8607669AE \-\-\> Z8791156AA \(Active Exchange Part\) Z8607671AC \-\-\> Z8791157AA \(Active Exchange Part\) Z8607671AD \-\-\> Z8791158AA \(Active Exchange Part\) Z8607671AE \-\-\> Z8791159AA \(Active Exchange Part\)

JSON: [/v1/bulletins/11012829](/v1/bulletins/11012829)

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