Technical Service Bulletin (TSB)
Flash: Battery Pack Control Module (BPCM) Updates
REFERENCE:

TSB: 08-034-25
GROUP: 08 - Electrical

Date:

February 8, 2025

REVISION: 08-082-24

VEHICLES
AFFECTED:

2024 (JL) Jeep Wrangler
MARKET APPLICABILITY:
This bulletin applies to vehicles built on or before April 01, 2024 (MDH
**MEA
NA
0401XX) equipped with the 2.0L I4 DOHC DI Turbo PHEV Engine (Sales
**
**EE**
Code ECX).
CH
SA
IAP

CUSTOMER
SYMPTOM:

**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:**
● **P0DAB-00 - Hybrid/EV Cell Balancing Performance.**
● P0607-00 - ECU Internal Performance.
● P0AA1 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed.
● P0AA4 - Hybrid Battery Negative Contactor Circuit Stuck Closed.
● P0C78 - Hybrid/EV Battery System Precharge Time Too Long.
● P0CA6 - Hybrid/EV Battery Charging Current High.
● P0B24 - Hybrid/EV Battery "A" Voltage Unstable.
● P1C5E - Hybrid/EV Battery State Of Health Failied.
● P0BBE - Hybrid/EV Battery Pack Voltage Variation.

CAUSE:

BPCM software

This bulletin supersedes Technical Service Bulletin (TSB) 08-082-24, date of issue March 19, 2024,
which should be removed from your files. All revisions are highlighted with **asterisks** and include
an additional DTC and an updated Customer Symptom statement, adding additional markets, updated
RSU statement, updated Repair Procedure steps and new LOP.
**This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU)
23-322, date of issue November 21, 2023. 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.**
REPAIR SUMMARY:
This bulletin involves updating the BPCM with the latest available software.

Z08 FSAR-TSB-4843

-2-

CLAIMS DATA:

Labor Operation No:
**18-19-87-AL

18-19-87-AM

Failure Code

Labor Description
Battery Pack Control
Module (BPCM), Inspect
(0 - Introduction)
Battery Pack Control
Module (BPCM), Inspect
and Reprogram
(0 - Introduction)
RF
CC

Skill Category
6 - Electrical and Body
Systems

Labor Time
0.2 Hrs.

6 - Electrical and Body
Systems

0.7 Hrs.**

Required Flash
Customer Concern

The dealer must choose which failure code to use depending on if this is a Rapid Service Update
(RSU) or Technical Service Bulletin.
● The “RF” failure code is required for essential module flash/reprogramming and can only be used after
confirmation that the VIN is included on the RSU.
● The failure code “RF” (Required Flash) can no longer be used on Technical Service Bulletin flashes. The
“RF” failure code must be used on an RSU.
● If the customer’s concern matches the SYMPTOM/CONDITION identified in the Technical Service Bulletin,
failure code CC is to be used. When utilizing this failure code, the 3C’s must be supplied.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in DealerCONNECT/
Service Library, verify all related systems are functioning as designed. If DTCs or symptom conditions, other
than the ones listed above are present, record the issues on the repair order and repair as necessary before
proceeding further with this bulletin.
If a customer’s VIN is listed in VIP or your RSU VIN list, perform the repair. If any vehicle not on the VIN list
exhibits the DTCs, perform the repair.
SPECIAL TOOLS/EQUIPMENT:

Description
wiTECH or Equivalent

Ref. No.
–

Notes
–

-3-

Z08 FSAR-TSB-4843

**REPAIR PROCEDURE:
WARNING!
● Before performing the software reprogramming, it is necessary to make the vehicle safe.
● When performing repairs that directly involve or imply possible contact with live high voltage
components/systems, the technician must ensure that the power supply of the high-voltage system
is disconnected throughout the operation.
● Only specifically trained technicians qualified to perform repairs on vehicles with high voltage
systems under current national laws/regulations are authorized to work on the vehicle.
● Before performing any diagnostic repair work on the vehicle, carefully read and comply with
the general instructions for working safely on hybrid/electric vehicles and use suitable general
equipment and Personal Protective Equipment (PPE).
● The vehicle must not be connected to a high voltage charger when performing software updates.
NOTE: Install a battery charger to maintain a 12 volt system voltage.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
1. Is the vehicle on the RSU VIN list?
● YES >>> Proceed to Step 2.
● NO >>> Proceed to Step 3.
2. Does the BPCM have the latest software already installed?

3.

4.
5.

6.

7.
8.
9.

● YES >>> This bulletin has been completed, use inspect LOP (18-19-87-AL) to close the active RSU.
● NO >>> Proceed to Step 3.
Has the 95B recall instructions been completed on this vehicle?
● YES>>> Proceed to Step 4.
● NO>>> Follow the 95B Recall Instructions and utilize the LOPs contained within the Recall.
Disable HV Battery Contactors using wiTECH - Go to the Misc Functions tab --> Select Disable HV Battery
Contactors --> then follow the wiTECH prompts.
Use wiTECH to confirm that the contactors are open and waiting five minutes. If the contactors do not
open turn the ignition on then off. Once successful a note will appear on the wiTECH screen indicating the
contactors are open.
Reprogram the BPCM with the latest software. If issues arise when flashing a module using the wiTECH
Diagnostic Application, please submit a ticket to the Helpdesk. The helpdesk can be found within the Help
menu.
Enable HV Battery Contactors using wiTECH - Go to the Misc Functions tab --> Select Enable HV Battery
Contactors For Service--> then follow the wiTECH prompts.
Perform a Drive Cycle Routine using wiTECH - Go to BPCM --> Go to the System Tests tab --> Select
95B / 96B Drive Cycle --> then follow the wiTECH prompts.
Clear all DTCs that may have been set in any module due to reprogramming. The wiTECH application will
automatically present all DTCs after the flash and allow them to be cleared.**

POLICY:
Reimbursable within the provisions of the warranty.
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.