NHTSA ID Number: 11019435
Manufacturer Communication Number: 18-027-25
TSB/Document Date: 2025-06-10
Summary
"Flash: Powertrain Control Module (PCM) Updates Customers may experience the following: ● Engine knocking or ""pinging"" during extreme hot and dry ambient temperatures if only using 91 Octane fuel This bulletin involves reprogramming the PCM with the latest available software."
Technical Service Bulletin (TSB)
Flash: Powertrain Control Module (PCM) Updates
REFERENCE:
TSB: 18-027-25
GROUP: 08 - Electrical
Date:
June 4, 2025
VEHICLES
AFFECTED:
2022 (JL) Jeep
Wrangler
This bulletin applies to vehicles equipped with a 6.4L V8 SRT HEMI
MDS Engine (Sales Code ESG) and a 8-Spd Auto 8HP75 Trans (Sales
Code DFV).
REVISION: —
MARKET APPLICABILITY:
NA
MEA
SA
IAP
EE
CH
CUSTOMER
SYMPTOM:
Customers may experience the following:
● Engine knocking or "pinging" during extreme hot and dry ambient temperatures if only using 91 Octane
fuel.
CAUSE:
PCM software updates.
REPAIR SUMMARY:
This bulletin involves reprogramming the PCM with the latest available software.
CLAIMS DATA:
Labor Operation No:
18-19-06-JR
Failure Codes
Labor Description
Module, Powertrain
Control (PCM) Reprogram
(0 - Introduction)
CC
Skill Category
1 - Engine Repair And
Performance
Labor Time
0.3 Hrs.
Customer Concern
The dealer must use failure code CC with this Technical Service Bulletin.
● If the customer’s concern matches the SYMPTOM identified in the Technical Service Bulletin, failure code
CC is to be used.
● When utilizing this failure code, the 3C’s (customer’s concern, cause and correction) must be provided for
processing Technical Service Bulletin flash/reprogramming conditions.
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 the customer describes the symptom/condition listed above, perform the repair procedure.
SPECIAL TOOLS/EQUIPMENT:
Description
wiTECH or Equivalent
Ref. No.
–
Notes
–
REPAIR PROCEDURE:
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. Reprogram the PCM 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.
2. 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.
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TSB/Document ID: 18-027-25
Replacement Service Bulletin Number:
MFR Communication Date: 2025-06-04
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System: Powertrain Control Module
MFR Component Subsystem:
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