# Service bulletin 08\-394\-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: 11026549
- Published by NHTSA: 2025\-12\-11
- Manufacturer's number: 08\-394\-25
- Manufacturer's date: 2025\-12\-05
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Telematics Box Module \(TBM\) Backup Battery Replacement When DTC B1E21 Is Present echnicians may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code \(DTC\): ● B1E21\-96 \- Backup Battery Component Internal Failure

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026549-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026549-9999.pdf)

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

## Components

Electrical system

## Trouble codes named

B1E21

## Vehicles listed

- 2019 to 2026 ALFA ROMEO GIULIA
- 2019 to 2021 ALFA ROMEO STELVIO
- 2023 to 2026 ALFA ROMEO STELVIO
- 2025 to 2026 ALFA ROMEO TONALE
- 2024 ALFA ROMEO TONALE PHEV
- 2022 to 2026 CHRYSLER PACIFICA
- 2022 to 2026 CHRYSLER PACIFICA PLUG\-IN HYBRID
- 2022 to 2026 CHRYSLER VOYAGER
- 2023 DODGE CHALLENGER
- 2023 to 2026 DODGE CHARGER
- 2022 to 2026 DODGE DURANGO
- 2023 to 2025 DODGE HORNET
- 2026 DODGE HORNET
- 2022 to 2026 JEEP COMPASS
- 2022 to 2026 JEEP GLADIATOR
- 2022 to 2026 JEEP GRAND CHEROKEE
- 2022 to 2026 JEEP GRAND CHEROKEE 4XE
- 2022 to 2026 JEEP GRAND CHEROKEE L
- 2022 to 2026 JEEP GRAND WAGONEER
- 2026 JEEP RECON
- 2019 to 2023 JEEP RENEGADE
- 2024 to 2025 JEEP RENEGADE
- 2022 to 2025 JEEP WAGONEER
- 2026 JEEP WAGONEER
- 2022 to 2026 JEEP WRANGLER
- 2022 to 2026 JEEP WRANGLER 4XE
- 2022 to 2026 RAM 1500
- 2022 to 2026 RAM 2500
- 2022 to 2026 RAM 3500
- 2022 to 2026 RAM 4500
- 2022 to 2026 RAM 5500
- 2023 to 2026 RAM PROMASTER
- 2022 RAM PROMASTER CITY

## Recalls for the same vehicles and component

- [26V362000](/recalls/nhtsa/26V362000.md), 2026-06-04: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [26V262000](/recalls/nhtsa/26V262000.md), 2026-04-23: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [26V225000](/recalls/nhtsa/26V225000.md), 2026-04-09: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [2026043](/recalls/tc/2026043.md), 2026-02-02: Electrical
- [26V059000](/recalls/nhtsa/26V059000.md), 2026-02-02: ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; EXTERIOR LIGHTING:TURN SIGNAL; EXTERIOR LIGHTING:BRAKE LIGHTS
- [25V826000](/recalls/nhtsa/25V826000.md), 2025-12-01: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [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
- [25V576000](/recalls/nhtsa/25V576000.md), 2025-09-04: ELECTRICAL SYSTEM:PROPULSION SYSTEM
- [25V530000](/recalls/nhtsa/25V530000.md), 2025-08-18: SERVICE BRAKES; 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
- [9100928](/bulletins/11038551.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM; WHEELS. TPMS full assembly\(core \& Stem To support proper failure analysis and validation, dealers must return the complete TPMS sensor assembly when submitting a claim related to a TPMS leak concern. Claims submitted with TPMS sensors that are missing the valve core and/or stem components will be considered incomplete and will not be eligible for evaluation. As a reminder, the complete Tire Pressure Monitor, including the valve stem should be returned., the claim will be rejected and subject to warranty chargeback, as Stellantis cannot perform a comprehensive root cause analysis without all original components of the assembly.
- [08\-360\-26](/bulletins/11038550.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.
- [08\-359\-26](/bulletins/11038549.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.
- [08\-357\-26](/bulletins/11038547.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.
- [08\-356\-26](/bulletins/11038546.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.
- [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.
- [08\-354\-26](/bulletins/11038544.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.
- [08\-149\-26 REV. B](/bulletins/11038543.md), 2026-10-16, Service bulletin: STEERING; ELECTRICAL SYSTEM. Flash: Electric Power Steering \(EPS\) Module Updates Customers may experience the following: SYMPTOM: ● Battery drain due to the EPS system staying active after ignition off. This bulletin involves inspecting and possibly reprogramming the EPS module with the latest available software.
- [08\-139\-26 REV. B](/bulletins/11038542.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. Flash: Radio Frequency Hub Module \(RFHM\) Updates Customer may experience the following: SYMPTOM: ● Excessive Ignition Off Draw \(IOD\) on 12v vehicle battery if keys are left within proximity range. This bulletin involves inspecting and possibly reprogramming the RFHM module with the latest available software

JSON: [/v1/bulletins/11026549](/v1/bulletins/11026549)

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