# Service bulletin 08\-035\-26

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: 11028229
- Published by NHTSA: 2026\-02\-04
- Manufacturer's number: 08\-035\-26
- Manufacturer's date: 2026\-01\-31
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Flash: Battery Pack Control Module \(BPCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ● \*\*P0B28\-00 \- Hybrid/EV Battery "B" Voltage Unstable.\*\* ● P0DAB\-00 \- Hybrid/EV Cell Balancing Performance. ● P0607\-00 \- ECU Internal Performance. ● P0AA1\-00 \- Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4\-00 \- Hybrid Battery Negative Contactor Circuit Stuck Closed. ● P0C78\-00 \- Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6\-00 \- Hybrid/EV Battery Charging Current High. ● P0B24\-00 \- Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E\-00 \- Hybrid/EV Battery State Of Health Failied. ● P0BBE\-00 \- Hybrid/EV Battery Pack Voltage Variation. \*\*Customers may also comment on the following: ● Vehicle does not start. NOTE: The no start condition is accompanied with one or more of the following DTCs: P0DAB\-00, P0607\-00, P0AA1\-00, P0AA4\-00, P0C78\-00, P0CA6\-00, P0B24\-00, P1C5E\-00 and/or P0BBE\-00. P0B28\-00 will result in a MIL for 49 days. After 49 days of the MIL, the vehicle will no longer be allowed to start.\*\* , new LOP, new Diagnosis statement and new Repair Procedure. Other changes not asterisked include the removal of a build date. This Technical Service Bulletin \(TSB\) has also been released as a Rapid Service Update \(RSU\) 25\-113, date of issue June 25, 2025. All applicable RSU VINs have been loaded. To verify this RSU service action is applicable to the vehicle, use VIP or perform a VIN search in DealerCONNECT/Service Library. All repairs are reimbursable within the provisions of warranty. B08 FSAR\-TSB\-6896 \-2\- REPAIR SUMMARY: \*\*This bulletin involves reprogramming the BPCM with the latest available software.\*\*

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028229-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028229-9999.pdf)

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

## Components

Electrical system

## Trouble codes named

P0607, P0AA1, P0AA4, P0B24, P0B28, P0BBE, P0C78, P0CA6, P0DAB, P1C5E

## Vehicles listed

- 2025 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

## 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\-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.
- [S2608000038](/bulletins/11038520.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
- [08\-356\-26](/bulletins/11038509.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.
- [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 \(Active Exchange Part\)
- [113291](/bulletins/11035084.md), 2026-07-18, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. ENCLOSURE \- SPEAKER
- [9100533 Rev 1](/bulletins/11035071.md), 2026-07-18, Service bulletin: ELECTRICAL SYSTEM. DCSD Before replacing this part for a Blank screen, screen flickering or screen inoperative concern, perform a hard reset to the Display and see if concern is resolved. Currently no dealer claims with this issue stating the RVC image is affected. Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only. Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only. Exchange Part Number Supersession For Ordering: 68607669AC \-\-\> Z8607669AC \-\-\> Z8791155AA 68607669AD \-\-\> Z8607669AD \-\-\> Z8791669AA 68607669AE \-\-\> Z8607669AE \-\-\> Z8791156AA 68607671AC \-\-\> Z8607671AC \-\-\> Z8791157AA 68607671AD \-\-\> Z8607671AD \-\-\> Z8791158AA 68607671AE \-\-\> Z8607671AE \-\-\> Z8791159AA

JSON: [/v1/bulletins/11028229](/v1/bulletins/11028229)

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