Technical Service Bulletin (TSB)
Flash: Body Control Module (BCM) Updates
REFERENCE:

TSB: 08-019-26
GROUP: 08 - Electrical

Date:

January 27, 2026

VEHICLES
AFFECTED:

2024 (WL) Jeep Grand Cherokee / Grand Cherokee L

REVISION: 08-171-25 REV. A

MARKET APPLICABILITY:
NA

MEA

SA

IAP

EE

CH

NOTE: This bulletin applies to
the North and South
America, Enlarged
Europe, Middle East &
Africa and India & Asia
Pacific markets.
CUSTOMER
SYMPTOM:

Customers may experience one or more of the following:
● Battery drained.
● Ignition off draw.
● Instrument Panel Cluster (IPC) goes off and on when the vehicle goes into sleep mode.
● Door lock indicator lamps stay illuminated.

CAUSE:

BCM software

This bulletin supersedes Technical Service Bulletin (TSB) 08-171-25 REV. A, date of issue November
21, 2025, which should be removed from your files. All revisions are highlighted with asterisks and
include an updated Repair Procedure.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 25-243,
date of issue November 21, 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.
REPAIR SUMMARY:
This bulletin involves inspecting and possibly updating the BCM with the latest available software.

Z08 FSAR-TSB-6737

-2-

CLAIMS DATA:

Labor Operation No:
18-19-17-Z1
18-19-17-Z2

Failure Code

Labor Description
Inspect Software Level
(0 - Introduction)
Inspect and Reprogram
Module
(0 - Introduction)
RF
CC

Skill Category
6 - Electrical and Body
Systems
6 - Electrical and Body
Systems

Labor Time
0.2 Hrs.
0.1 Hrs.

Required Flash - RSU
Customer Concern

NOTE: For EE market only, enter the RSU spending channel for the first 18 months from the date of
issue, then apply the W24.
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.
IMPORTANT! This bulletin is part of a multiple module bundle service action, utilizing a new LOP claim
structure. The Primary LOP can only be claimed once per Repair Order. Each bulletin
Related LOP will then be able to be claimed for performing each module update.
RELATED LOPS:

Labor Operation No:
18-19-17-55

18-19-87-53

Labor Description
Reprogram Body Control
Module (BCM)
(0 - Introduction)
wiTECH Routine to
Disable/Enable HV
Battery Contactors for
Service; Includes 5
Minute Waiting Period
(0 - Introduction)

Skill Category
6 - Electrical and Body
Systems

Labor Time
0.1 Hrs.

6 - Electrical and Body
Systems

0.2 Hrs.

SPECIAL TOOLS/EQUIPMENT:

Description
wiTECH or Equivalent

Ref. No.
-

Notes
-

-3-

Z08 FSAR-TSB-6737

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 Diagnostic Trouble Codes (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 customers VIN is listed in VIP or your RSU VIN list, perform the repair. If any vehicle not on the VIN list
exhibits any of the symptom listed above in the customer symptom section, perform the Repair Procedure.
REPAIR PROCEDURE:
WARNING!
● For PHEV/MHEV vehicles: 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).
WARNING!
For PHEV/MHEV vehicles: The vehicle must not be connected to a high voltage charger when
performing software updates.
NOTE: Install a battery charger to ensure battery voltage does not drop below 13.2 volts. Do not allow
the charging voltage to climb above 13.5 volts during the flash process.
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 BCM have the latest software already installed?
● YES>>> This bulletin has been completed, use inspect LOP (18-19-17-Z1) to close the active RSU.
● NO>>> Proceed to Step 3.
3. Is the vehicle PHEV/MHEV equipped?

4.
5.

6.

7.

● YES>>> Proceed to **Step 7**.
● NO>>> Proceed to Step 4.
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 BCM with the latest available 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.
For PHEV/MHEV vehicles: Enable HV Battery Contactors using wiTECH - Go to the Misc Functions tab
--> Select Enable HV Battery Contactors For Service--> then follow the wiTECH prompts.

8. 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.
NOTE: For SA market only, after applying this TSB, it is not necessary to send DID-I or DID-A.
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.