Technical Service Bulletin (TSB)
Flash: Folding Seat Module (FSM) Update
REFERENCE:

VEHICLES
AFFECTED:

CUSTOMER
SYMPTOM:

TSB: 08-213-23
GROUP: 08 - Electrical

Date:

September 2, 2023

2023 (WS) Grand Wagoneer/Wagoneer
This bulletin applies to vehicles built on or before July 31, 2023 (MDH
0731XX) equipped with 3RD Row Seat - 60/40 Power Recline (Sales Code
CBB).

REVISION:

–

MARKET APPLICABILITY:

NA

MEA

SA

IAP

EE

CH

The customer may describe the following:

• The third row seats are stuck in down/cargo position and will not return to the upright seat position with
the auto up button.
Customers will not be able to unfold the seats from one button press.
Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has
been set:

• B1F28-54 - 3rd Row Seat LT - Recline Motor 1- Missing Calibration.
CAUSE:

FSM Software.

This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 23-255, date
of issue September 02, 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. This RSU will expire 18 months after the date of issue.
REPAIR SUMMARY:
This bulletin involves performing a software update and calibration routine on the FSM.

08-213-23

-2-

CLAIMS DATA:
Labor Operation No:

Labor Description

Skill Category

Labor Time

18-52-29-9A

Module, Folding Seat (FSM)
- Inspect
(0 - Introduction)

6 - Electrical and Body
Systems

0.2 Hrs.

18-52-29-9B

Module, Folding Seat (FSM)
- Inspect and Reprogram
and Perform Parameter
Update and Calibrate 3rd
Row Seat
(0 - Introduction)

6 - Electrical and Body
Systems

0.2 Hrs.

Failure code

RF

Required Flash

CC

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
any of the symptoms listed above in the customer symptom section, perform the Repair Procedure.
SPECIAL TOOLS/EQUIPMENT:
Description

Ref. No.

Notes

wiTECH or Equivalent

–

–

-3-

08-213-23

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. Is the vehicle on the RSU VIN list?
• YES>>> Proceed to Step 2.
• NO>>> Proceed to Step 3.
2. Does the FSM have the latest software already installed?
• YES>>> This bulletin has been completed, use inspect LOP (18-52-29-9A) to close
the active RSU.
• NO>>> Proceed to Step 3.
3. Reprogram the FSM with the latest available software. Detailed instructions for flashing control
modules using the wiTECH Diagnostic Application are available by selecting the application’s
“HELP” tab.
4. 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.
5. Using wiTECH, select “Fold Stow Module”.
6. Select “Misc Functions”.
7. Select “3rd Row Seats Calibration Routine” and follow screen prompts.
8. Clear all DTCs again that may have been set.
9. Verify the third row seats will fold and unfold properly using the one touch button.
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.