NHTSA ID Number: 11029667
Manufacturer Communication Number: 08-072-26
TSB/Document Date: 2026-03-05
Summary
High Voltage Battery
Pack Replacement XU1 Warranty Extension Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0BBE-00 - Hybrid Battery Pack Voltage Variation. ● P1C5E-00 - Battery State Of Health Failed. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P0B28-00 - Hybrid/EV Battery "B" Voltage Unstable. NOTE: ● Any warranty qualifying issues outside of these specific DTCs will continue to be covered per the HV battery standard warranty coverage. ● Battery packs may contain cells with separator damage. Customers may comment on the following: ● “Service Charging System” message displayed in the Instrument Panel Cluster (IPC) and charging is inhibited. This bulletin involves replacing the high voltage battery pack.
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TSB/Document ID: 08-072-26
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-18
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
Technical Service Bulletin (TSB)
High Voltage Battery Pack Replacement XU1 Warranty Extension
REFERENCE:
TSB: 08-072-26
GROUP: 08 - Electrical
Date:
February 18, 2026
VEHICLES
AFFECTED:
2021 - 2025 (JL) Jeep Wrangler
2022 - 2026 (WL) Jeep Grand Cherokee / Grand Cherokee L
This bulletin applies to vehicles equipped with a 2.0L I4 DOHC DI
Turbo PHEV Engine (Sales Code ECX).
REVISION: —
MARKET APPLICABILITY:
NA
MEA
SA
IAP
EE
CH
NOTE: This bulletin applies
to the North America,
South America,
Enlarged Europe, India
Asia & Pacific, Middle
East & Africa and China
markets.
CUSTOMER
SYMPTOM:
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):
● P0DAB-00 - Hybrid/EV Cell Balancing Performance.
● P0BBE-00 - Hybrid Battery Pack Voltage Variation.
● P1C5E-00 - Battery State Of Health Failed.
● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable.
● P0B28-00 - Hybrid/EV Battery "B" Voltage Unstable.
NOTE: ● Any warranty qualifying issues outside of these specific DTCs will continue to be covered per
the HV battery standard warranty coverage.
● Battery packs may contain cells with separator damage.
Customers may comment on the following:
● “Service Charging System” message displayed in the Instrument Panel Cluster (IPC) and charging is
inhibited.
CAUSE:
Manufacturer defect
REPAIR SUMMARY:
This bulletin involves replacing the high voltage battery pack.
M08 FSAR-TSB-6819
-2-
CLAIMS DATA:
Labor Operation No:
08-08-04-97
08-08-04-98
Failure Code
Labor Description
Battery, 400 Volt Replace (JL Models
Only)
(3 - Highly Skilled)
Battery, 400 Volt Replace (WL Models
Only)
(3 - Highly Skilled)
ZZ
Skill Category
6 - Electrical and Body
Systems
Labor Time
3.2 Hrs.
6 - Electrical and Body
Systems
4.1 Hrs.
Service Action
RELATED LOP:
Labor Operation No:
07-FF-01-52
Labor Description
Skill Category
Drain and Fill - EV Battery 6 - Electrical and Body
Cooling System
Systems
(3 - Highly Skilled)
Labor Time
0.2 Hrs.
Qty
1 (AR)
Part No.
68540591AA
1 (AR)
1 (AR)
68637390AA
1 (AR)
68488244GA
1 (AR)
68540591GA
Notes
High Voltage Battery Pack
(WL)
High Voltage Battery Pack
(JL)
High Voltage Battery Pack
(WL)
High Voltage Battery Pack
(JL)
High Voltage Battery Pack
(WL)
SPARE PARTS:
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 the customer describes the symptom/condition listed above perform the repair procedure.
-3-
M08 FSAR-TSB-6819
SPECIAL TOOLS/EQUIPMENT:
Description
wiTECH or Equivalent
Ref. No.
–
Notes
–
REPAIR PROCEDURE:
WARNING!
● 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).
1. Replace the High Voltage Battery Pack. Refer to the detailed procedures available in DealerCONNECT >
Service Library> under: 12 - Electrified Powertrain System / High Voltage Battery / High Voltage Battery /
Removal and Installation.
2. Clear any DTCs that may have been set.
POLICY:
Warranty Extension to extend the current warranty period to unlimited years and miles from vehicles in-service
date. See Warranty Bulletins: U.S. D-26-06, Canada SAB 2026-05, PR/USVI ID-26-06, China: ID-26-07,
Australia ID-26-08, Japan ID-26-09, South Korea ID-26-10, Iceland ID-26-11, New Zealand ID-26-12, Thailand
ID-26-13, Israel ID-26-14, Enlarged Europe ID-26-15, Middle East & Africa ID-26-16 and South America
ID-26-17 for details associated with the Warranty Extension.
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.
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