23509 ECM Software May Cause Sudden Stop While Driving – 2021-2024 International LT & RH Trucks

SEOCONTENT-START

Posted on ISIS
05/26/2023
SERVICE PROCEDURE
SUBJECT: SAFETY RECALL
23509
MAY, 2023
Engine Control Module (ECM) programming on
certain 2021 thru 2024 International® LT® and RH™
Series trucks built 06/11/2020 thru 03/16/2023 with
engine feature code 12BET, 12BEU, 12BEV,
12BEW, 12BEX, 12BEY, 12BEZ, 12BGA, 12BGB,
12BGC, 12BGD, 12BGE, 12BGG, 12BGH, 12BEJ,
12BGK, 12BGL, 12BGM, 12BGN, or 12BGP
(International® A26 engine) and ABS feature code
04AAS, 04AZE, 04AZH, 04AZX, 04BAB, or 04BAC
(Air Brake Anti-Lock Brake System [ABS])
CUSTOMER LETTER
Print ready (PDF file) copy of the Customer Letter
DEFECT DESCRIPTION
The Engine Control Module (ECM) disregards throttle pedal input and reduces
engine torque when the ABS control unit senses a wheel speed sensor fault and
may cause the vehicle to unexpectedly slow to idle speed on the roadway. A
vehicle that unexpectedly slows to idle speed on the roadway can increase the
risk of a vehicle crash that may result in property damage, personal injury, or
death.
MODELS INVOLVED
This safety recall involves certain 2021 thru 2024 International® LT® and RH™
Series trucks built 06/11/2020 thru 03/16/2023 with engine feature code 12BET,
12BEU, 12BEV, 12BEW, 12BEX, 12BEY, 12BEZ, 12BGA, 12BGB, 12BGC,
12BGD, 12BGE, 12BGG, 12BGH, 12BEJ, 12BGK, 12BGL, 12BGM, 12BGN, or
12BGP (International® A26 engine) and ABS feature code 04AAS, 04AZE,
04AZH, 04AZX, 04BAB, or 04BAC (Air Brake Anti-Lock Brake System [ABS]).
VEHICLE ECALL 23509 R
© 2023 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 1
ELIGIBILITY
This procedure applies ONLY to vehicles marked in the International® Service
PortalsM with Safety Recall 23509. Also complete any other open campaigns
listed on the Service Portal at this time.
PARTS INFORMATION
No required parts.
TOOLS REQUIRED
Description Tool Number
Battery Charger 55 Amp PSC550CC
EZ-Tech® or Electronic Service Tool (EST) with Service N/A
Diaqnostics Solutions (SOS) Software
VEHICLE RECALL 23509
© 2023 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.
SERVICE PROCEDURE
I WARNING! To prevent personal injury and / or death, or damage to I
llproperty, park vehicle on hard flat surface, turn the engine off, set the I
parking brake and install wheel chocks to prevent the vehicle from moving I in either direction. I
WARNING! To prevent personal injury and/ or death, always wear safe eye
protection when performing vehicle maintenance.
WARNING! To prevent personal injury and / or death, or damage to
property, allow engine/ vehicle components to cool before servicing.
I WARNING! To prevent personal injury and / or death, or damage to
property, keep flames or sparks away from vehicle and do not smoke while
servicing the vehicle’s batteries. Batteries expel explosive gases.
1. Park vehicle on flat surface.
2. Shift transmission to Park or Neutral and set parking brake.
3. Turn vehicle ignition to Key OFF position.
VEHICLE RECALL 23509
© 2023 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.
4. Install wheel chocks.
5. Connect battery charger/ maintainer to vehicle batteries.
NOTE: Use SDS to program vehicles for this campaign.
6. Using SOS, connect to vehicle.
7. Using SOS, program ECM.
NOTE: All programming and troubleshooting information can be accessed
from the articles listed in the chart below, Dealer EZ-Tech®, or clicking the
link below to access the Service Diagnostic Solutions for SDS.
Service Diagnostic Solutions
NOTE: These articles contain general information about each
reprogramming method and software, with links to specific instructions.
Service Diagnostics
Solutions SOS
Service Diagnostics Solutions (SOS) User Guide
4328790
8. If assistance is needed, contact Vehicle Programming by creating an iKNow
case file or calling 1-800-336-4500, options 3, 5, 1.
NOTE: Clear all inactive / previously active faults after programming. Only
perform diagnostics or procedures on ACTIVE faults and then open a new
claim section on your work order.
9. If any active/ previously active faults are found after programming, clear them
from ECM. Only perform diagnostics or procedures on active faults.
10. Disconnect EZ-Tech® or EST from vehicle.
11. Disconnect battery charger/ maintainer from vehicle batteries.
12. Remove wheel chocks.
END OF SERVICE PROCEDURE
VEHICLE RECALL 23509
© 2023 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.
LABOR INFORMATION
Operation Number Description
A40-23509-1 Update ECM Calibration
CAMPAIGN IDENTIFICATION LABEL
Each vehicle corrected in accordance with this
campaign must be marked with a CTS-1075
Campaign Identification Label.
Complete the label and attach on a clean surface next
to the vehicle identification number (VIN) plate.
ADMINISTRATIVE/ DEALER RESPONSIBILITIES
WARRANTY CLAIMS
Time
0.5 hrs
COMPLETED
Service Location Code #
Warranty claim expense is to be charged to Warranty. Claims are to be
submitted in the normal manner, making reference to Safety Recall 23509.
Section 7 of the Warranty Policy and Procedures Manual contains further
information related to the submission and processing of AFC / Recall claims.
As with all claim submissions, items acquired locally must be submitted in the
“Other Charges” tab. The cost of any bulk items (such as a bag of cable tie
straps, roll of wire, barrel of oil, or tube of silicone) should be prorated for the cost
of the individual pieces/ amount used during each repair.
VEHICLE RECALL 23509
© 2023 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.
GROUP – Enter n umber
NOUN – Leave b lank —- ~
GROUP
I I I
–
C (CAUSE) – Ente r either 1, 2, 3. (See below)
1. Inspected (No repair required).
2. Inspected and repaired.
3. Defective part from parts stock.
–
WARRANTY – (Wa rranty Code) Enter 40. ~
TYPE PART – En
PAD-Enter ’00
ter P for type part causing failure. c:::
~
UNITED STATES AND POSSESSIONS
NOUN C WARR. TP PAD
I I I
I
OOOCK)<l7910
The National Traffic and Motor Vehicle Safety Act, as amended, provides that
each vehicle that is subject to a vehicle recall campaign must be adequately
repaired within a reasonable time after the owner has tendered it for repair. A
failure to adequately repair within 60 days after a tender of a vehicle is prima
facie evidence of failure to repair within a reasonable time. If the condition is not
adequately repaired within 60 days, the owner may be entitled to replacement
with an identical or reasonable equivalent vehicle at no charge, or to a refund of
the purchase price less a reasonable allowance for depreciation.
Dealers must correct all vehicles subject to this campaign at no charge to the
owner, regardless of mileage, age of vehicle, or ownership, from this time
forward.
Dealers should proceed immediately to make necessary correction to units in
inventory. Federal law prohibits a dealer from delivering under a sale or lease, a
new motor vehicle or any new or used item of motor vehicle equipment (including
a tire) covered by the notification of a recall until the defect or noncompliance is
remedied.
Dealers must make every effort to promptly schedule an appointment with each
owner to repair his or her vehicle as soon as possible. However, consistent with
the customer notification, dealers are expected to complete the repairs on the
mutually agreed upon service date.
Dealers involved in the recall process will be furnished a listing of owner names
and addresses to enable them to follow up with owners and have the vehicles
corrected. Use of this listing must be limited to this campaign because the list
may contain information obtained from state motor vehicle registration records,
and the use of such motor vehicle registration data for purposes other than this
campaign is a violation of law in several states.
VEHICLE ECALL 23509
© 2023 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.
R
5
CANADA
Dealers must correct all vehicles subject to this campaign at no charge to the
owner, regardless of mileage, age of vehicle, or ownership, from this time
forward.
Dealers should proceed immediately to make necessary correction to units in
inventory. All inventory vehicles subject to this recall campaign must be
corrected prior to sale, transfer or delivery. If vehicles have been sold or
transferred and you are in receipt of Customer Notification Letters and
Authorization for Recall Service cards for those vehicles, the transfer location or
customer must be notified immediately from your dealer location.
Dealers must make every effort to promptly schedule an appointment with each
owner to repair his or her vehicle as soon as possible. However, consistent with
the customer notification, dealers are expected to complete the repairs on the
mutually agreed upon service date.
Dealers involved in the recall process will be furnished a listing of owner names
and addresses to enable them to follow up with owners and have the vehicles
corrected. Use of this listing must be limited to this campaign because the list
may contain information obtained from state motor vehicle registration records,
and the use of such motor vehicle registration data for purposes other than this
campaign is a violation of law in several states.
EXPORT
Export Distributors should proceed immediately to make necessary correction to
units in inventory. All inventory vehicles subject to this recall campaign must be
corrected prior to sale, transfer or delivery. If vehicles have been sold or
transferred and you are in receipt of Customer Notification Letters and
Authorization for Recall Service cards for those vehicles, the transfer location or
customer must be notified immediately from your distributor location.
Export Distributors are to submit warranty claims in the usual manner making
reference to this recall number.
Export Distributors are expected to provide full cooperation and follow-up with
respect to this important subject matter. If you have any questions or need
further assistance, please contact the Regional Service Manager at your regional
office.
VEHICLE ECALL 23509
© 2023 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.
R
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NAVISTAR, INC.
VEHICLE ECALL 23509
© 2023 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

**************************************************************************************************************

Navistar, Inc.
2701 Navistar Drive
Lisle, IL 60532 USA
navistar.com
A NAVISTAR COMPANY
IMPORTANT SAFETY RECALL 23509
NHTSA RECALL NO. 23V-220
This notice applies to your vehicle identified on the
enclosed card.
MAY 2023
Mailed on
05/26/2023
Compliance
Dear INTERNATIONAL® Customer,
This notice is sent to you in accordance with the
requirements of the National Traffic and Motor Vehicle
Safety Act.
Navistar has decided that a defect which relates to motor
vehicle safety exists in certain 2021 thru 2024 LT® and
RH® series trucks built 06/11/2020 thru 03/16/2023 with
engine feature code 12BET, 12BEU, 12BEV, 12BEW,
12BEX, 12BEY, 12BEZ, 12BGA, 12BGB, 12BGC, 12BGD,
12BGE, 12BGG, 12BGH, 12BEJ, 12BGK, 12BGL, 12BGM,
12BGN, or 12BGP (International® A26B engine) and ABS
feature code 04AAS, 04AZE, 04AZH, 04AZX, 04BAB, or
04BAC (Air Brake Anti-Lock Brake System [ABS]).
REASON FOR THIS RECALL
The Engine Control Module (ECM) disregards throttle
pedal input and reduces engine torque when the ABS
control unit senses a wheel speed sensor fault and may
cause the vehicle to unexpectedly slow to idle speed on the
roadway.
RISK TO MOTOR VEHICLE SAFETY
A vehicle that unexpectedly slows to idle speed on the
roadway can increase the risk of a vehicle crash that may
result in property damage, personal injury, or death.
DEFECT REMEDY
The repair will involve updating the ECM software to the
latest calibration. Authorized repair locations have software
and instructions to repair your vehicle. The repair will be
performed free of charge and take approximately 45
minutes to complete.
ACTIONS YOU SHOULD TAKE
If you own this vehicle, please schedule an appointment
with any Authorized repair center to have your vehicle
repaired. You can find your nearest dealer by using the
dealer locator at
https://www.internationaltrucks.com/dealer-locator or by
calling 1-800-448-7825 or find the nearest Love’s center at
https://www.loves.com .
*Love’s and Speedco locations in Texas cannot perform
warranty services.
If you have already paid for repairs prior to this notice
that corrected the defect, you may be eligible for
reimbursement of certain repair expenses if they occurred
03/30/2022 thru 06/05/2023. Present your original repair
paperwork and proof of payment to any
INTERNATIONAL® dealer and your eligibility will be
reviewed. You may also submit a claim using the enclosed
Request for Reimbursement card.
If you are the lessor of this vehicle, please forward a
copy of this notice to the lessee within ten days to comply
with federal regulations.
If you do not own this vehicle, please fill out and return
mail the enclosed card so that you will not be contacted
again about this recall.
IF YOU NEED FURTHER ASSISTANCE
If you believe that Navistar has failed to remedy the defect
without charge or within a reasonable time, please follow
the procedure described in the Owner Assistance Guide
section in your Owner’s Manual or call toll free 1-800-448-
7825.
You may also submit a complaint to the Administrator,
National Highway Traffic Safety Administration, 1200 New
Jersey Ave, SE, Washington, DC 20590; or call the toll
free Vehicle Safety Hotline at 1-888-327-4236 (TTY: 1-800-
424-9153); or go to http://www.safercar.gov.
Navistar requests your prompt attention and patience
regarding the correction of this defect and apologizes for
any inconvenience this may cause you.
Navistar, Inc.

**************************************************************************************************************

OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-220
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Navistar, Inc. APR 06, 2023 NHTSA Recall No. : 23V-220 Manufacturer Recall No. : 23509 Manufacturer Information :
Manufacturer Name : Navistar, Inc.
Address : 2701 Navistar Drive
Lisle IL 60532 Company phone : 331-332-1590
Population :
Number of potentially involved : 770 Estimated percentage with defect : 100 %
Vehicle Information : Vehicle 1 : 2021-2024 International LT
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL
Descriptive Information : • The suspect population is identified by models equipped with engine feature code 12BET, 12BEU, 12BEV, 12BEW, 12BEX, 12BEY, 12BEZ, 12BGA, 12BGB, 12BGC, 12BGD, 12BGE, 12BGG, 12BGH, 12BEJ, 12BGK, 12BGL, 12BGM, 12BGN, or 12BGP
(International® A26B engine) and ABS feature code 04AAS, 04AZE, 04AZH, 04AZX, 04BAB, or 04BAC (Air Brake Anti-Lock Brake System [ABS] WABCO).
• The inclusive dates of manufacture were determined by when these specific feature code combinations went into production through when Navistar implemented a ship hold at all manufacturing plants.
• The vehicles in the suspect population were built with International® A26B engines and with certain ABS feature codes where all other similar vehicles not subject to this recall were not.
There are 432 LT series trucks in the suspect population.
Production Dates : JUN 11, 2020 – MAR 10, 2023
VIN Range 1 : Begin : NR End : NR ntial Part 573 Safety Recall Report 23V-220 Page 2 Vehicle 2 : 2021-2024 International RH
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL
Descriptive Information : • The suspect population is identified by models equipped with engine feature code 12BET, 12BEU, 12BEV, 12BEW, 12BEX, 12BEY, 12BEZ, 12BGA, 12BGB, 12BGC, 12BGD, 12BGE, 12BGG, 12BGH, 12BEJ, 12BGK, 12BGL, 12BGM, 12BGN, or 12BGP
(International® A26B engine) and ABS feature code 04AAS, 04AZE, 04AZH, 04AZX, 04BAB, or 04BAC (Air Brake Anti-Lock Brake System [ABS] WABCO).
• The inclusive dates of manufacture were determined by when these specific feature code combinations went into production through when Navistar implemented a ship hold at all manufacturing plants.
• The vehicles in the suspect population were built with International® A26B engines and with certain ABS feature codes where all other similar vehicles not subject to this recall were not.
There are 338 RH series trucks in the suspect population.
Production Dates : JUN 11, 2020 – MAR 16, 2023
VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect :
Description of the Defect : The Engine Control Module disregards throttle pedal input and reduces engine torque when the ABS control unit senses a wheel speed sensor fault and may cause the vehicle to unexpectedly slow to idle speed on the roadway.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : A vehicle that unexpectedly slows to idle speed on the roadway can increase the risk of a vehicle crash that may result in property damage, personal injury, or death.
Description of the Cause : A change was made to The Engine Control Module (ECM) programming to support better cruise control response, however when detecting ABS wheel speed sensor faults over the CAN network, this change, interpreted the faults as very high vehicle speeds. The engine then reduced torque, and disregarded throttle pedal input in an effort to reduce the erroneously interpreted high speeds. Identification of Any Warning
that can Occur : None Involved Components : The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-220 Page 3 Component Name 1 : ECM Programming Component Description : Programming Software Component Part Number : No Part Number Supplier Identification : Component Manufacturer
Name : NR Address : NR
NR
Country : NR Chronology :
The full chronology exceeds the 2000 character limit and will be uploaded as a Miscellaneous document. Description of Remedy :
Description of Remedy Program : • The remedy will involve updating the ECM software to the latest
calibration that will release in April 2023.
• Navistar’s plan for reimbursement of pre-notification remedies, on file with NHTSA and dated 05/06/2022, applies and reimbursement instructions will be included in the customer notification. How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production : The remedy software includes a vehicle speed quality check that, under certain conditions (like a WSS fault) can switch the vehicle speed source from a wheel speed sensor to the transmission output shaft if necessary, where the recalled software did not include vehicle speed quality check.
/23/2023 – Navistar quarantines all vehicles at its assembly plants including future builds that will have the ECM software updated when the new software becomes available in April 2023. Recall Schedule :
Description of Recall Schedule : It is estimated that the Customer and Dealer notification letters will be
mailed by 05/26/2023.
Planned Dealer Notification Date : MAY 26, 2023 – MAY 26, 2023
Planned Owner Notification Date : MAY 26, 2023 – MAY 26, 2023 The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-220
Page 4
The information contained in this report was submitted pursuant to 49 CFR §573
* NR – Not Reported

**************************************************************************************************************

OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-220
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Navistar, Inc. MAR 30, 2023 NHTSA Recall No. : 23V-220 Manufacturer Recall No. : 23509 Manufacturer Information :
Manufacturer Name : Navistar, Inc.
Address : 2701 Navistar Drive
Lisle IL 60532 Company phone : 331-332-1590
Population :
Number of potentially involved : 770 Estimated percentage with defect : 100 %
Vehicle Information : Vehicle 1 : 2021-2024 International LT
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL
Descriptive Information : • The suspect population is identified by models equipped with engine feature code 12BET, 12BEU, 12BEV, 12BEW, 12BEX, 12BEY, 12BEZ, 12BGA, 12BGB, 12BGC, 12BGD, 12BGE, 12BGG, 12BGH, 12BEJ, 12BGK, 12BGL, 12BGM, 12BGN, or 12BGP
(International® A26B engine) and ABS feature code 04AAS, 04AZE, 04AZH, 04AZX, 04BAB, or 04BAC (Air Brake Anti-Lock Brake System [ABS] WABCO).
• The inclusive dates of manufacture were determined by when these specific feature code combinations went into production through when Navistar implemented a ship hold at all manufacturing plants.
• The vehicles in the suspect population were built with International® A26B engines and with certain ABS feature codes where all other similar vehicles not subject to this recall were not.
There are 432 LT series trucks in the suspect population.
Production Dates : JUN 11, 2020 – MAR 10, 2023
VIN Range 1 : Begin : NR End : NR ntial Part 573 Safety Recall Report 23V-220 Page 2 Vehicle 2 : 2021-2024 International RH
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL
Descriptive Information : • The suspect population is identified by models equipped with engine feature code 12BET, 12BEU, 12BEV, 12BEW, 12BEX, 12BEY, 12BEZ, 12BGA, 12BGB, 12BGC, 12BGD, 12BGE, 12BGG, 12BGH, 12BEJ, 12BGK, 12BGL, 12BGM, 12BGN, or 12BGP
(International® A26B engine) and ABS feature code 04AAS, 04AZE, 04AZH, 04AZX, 04BAB, or 04BAC (Air Brake Anti-Lock Brake System [ABS] WABCO).
• The inclusive dates of manufacture were determined by when these specific feature code combinations went into production through when Navistar implemented a ship hold at all manufacturing plants.
• The vehicles in the suspect population were built with International® A26B engines and with certain ABS feature codes where all other similar vehicles not subject to this recall were not.
There are 338 RH series trucks in the suspect population.
Production Dates : JUN 11, 2020 – MAR 16, 2023
VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect :
Description of the Defect : The Engine Control Module disregards throttle pedal input and reduces engine torque when the ABS control unit senses a wheel speed sensor fault and may cause the vehicle to unexpectedly come to a stop on the roadway.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : A vehicle that unexpectedly comes to a stop on the roadway can increase the risk of a vehicle crash that may result in property damage, personal injury, or death.
Description of the Cause : A change was made to The Engine Control Module (ECM) programming to support better cruise control response, however when detecting ABS wheel speed sensor faults over the CAN network, this change, interpreted the faults as very high vehicle speeds. The engine then reduced torque, and disregarded throttle pedal input in an effort to reduce the erroneously interpreted high speeds. Identification of Any Warning
that can Occur : None Involved Components : The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-220 Page 3 Component Name 1 : ECM Programming Component Description : Programming Software Component Part Number : No Part Number Supplier Identification : Component Manufacturer
Name : NR Address : NR
NR
Country : NR Chronology :
The full chronology exceeds the 2000 character limit and will be uploaded as a Miscellaneous document. Description of Remedy :
Description of Remedy Program : • The remedy will involve updating the ECM software to the latest
calibration that will release in April 2023.
• Navistar’s plan for reimbursement of pre-notification remedies, on file with NHTSA and dated 05/06/2022, applies and reimbursement instructions will be included in the customer notification. How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production : The remedy software includes a vehicle speed quality check that, under certain conditions (like a WSS fault) can switch the vehicle speed source from a wheel speed sensor to the transmission output shaft if necessary, where the recalled software did not include vehicle speed quality check.
/23/2023 – Navistar quarantines all vehicles at its assembly plants including future builds that will have the ECM software updated when the new software becomes available in April 2023. Recall Schedule :
Description of Recall Schedule : It is estimated that the Customer and Dealer notification letters will be
mailed by 05/26/2023.
Planned Dealer Notification Date : MAY 26, 2023 – MAY 26, 2023
Planned Owner Notification Date : MAY 26, 2023 – MAY 26, 2023 The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-220
Page 4
The information contained in this report was submitted pursuant to 49 CFR §573
* NR – Not Reported

SEOCONTENT-END