2023 International MV TSBs
89 Technical Service Bulletins across 14 categories
Categories
Engine
23 bulletinsThis article provides diagnostic and repair guidance for International MV trucks equipped with D-shaped fuel tanks that...
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exhibit a no-start condition, low power under increased fuel demand, an illuminated check engine light, or Cummins Fault Code 559. The condition may be caused by an excessively long fuel pickup tube contacting the bottom of the fuel tank and restricting fuel flow.
This document will guide the user through the changes of the dielectric grease/coatings used in certain areas on all...
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International vehicles built after 1/8/2018. International's Electrical Engineering Team made this change to improve the longevity of the OEM coatings and to improve applications at the factory.
This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature.
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Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 1037 to ensure continued compliance with greenhouse gas (GHG) regulations.
This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature.
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Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 1037 to ensure continued compliance with greenhouse gas (GHG) regulations.
New CARB Idle Reduction Change Request
Engine replacements for all International engines will need to follow this procedure.
In some geographic areas, ambient temperatures reaching below 40F (4C), including high levels of humidity, an operator...
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may experience engine stalling, low performance, and/or poor aftertreatment performance. This is caused by condensation accumulating and freezing within the Charge Air Cooler (CAC); affecting air flow into the engine. This article lists currently available winter front covers that can be installed on the front grille and bumper to reduce cold air flow to the engine compartment.
In some geographic areas, ambient temperatures reaching below 15F (-10 C), including high levels of humidity, an...
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operator may experience engine stalling, low performance, and or poor aftertreatment performance. This is caused by condensation accumulating and freezing within the Charge Air Cooler (CAC); affecting air flow into the engine. This article lists all the currently available winter front covers that can be installed on the front grille and bumper to reduce cold air flow to the engine compartment.
The copper air compressor discharge line with air dryer feature code 04VLE on Cummins L9 Series engines may crack and leak air due to engine vibration.
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This document will guide the user through the repair strategy to replace the hard copper line with a flexible Teflon version.
Title: Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure Applies...
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To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or Clean Idle Sticker, Clean Truck Check
Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or...
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Clean Idle Sticker, Clean Truck Check
The purpose of this document is to guide a user to resolve fault code 285 & 286 for Cummins engines.
Starter Diagnostics and warranty claim procedure; all engines EXCLUDING Cummins ISB engine with Allison transmission or...
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PSI engine.
How to request a horsepower quote; all International and Cummins engines
Starter kicks out after 1 second on MV and HV with Cummins L9 Engines
Cummins B6.7 and L9 engines with codes 285 and 286
Per agreement with EPA and CARB, Cummins, Inc.
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provided an emergency calibration for Cummins ISB, B6.7, ISL9, L9, and X15 engines when a DEF Quality Sensor (DQS) was not available. This action addressed the Diesel Exhaust Fluid (DEF) Quality Sensor failures in the field and the unavailability of parts due to the worldwide chip shortage. This recall is step two of this program designed to revert all affected vehicles back to the certified calibration and to provide them with the latest improved DQS and Coolant Control Valve (CCV) designs. Additionally, the emergency calibration and the restoration to the certified calibration with the latest improved DQS and Coolant Control Valve (CCV) designs have no effect on vehicle Emissions.
Cummins Programming guide and fault codes285 & 265; only vehicles built with Cummins B6.7, X15, or L9 engines
Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles equipped with PSI...
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engines or Cummins ISB engine with Allison transmissions
QLS Emergency ECM Calibration; only models equipped with Cummins B6.7, X15, L9, or International A26 engines
QLS Emergency Calibration.
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applies to 2016 and newer Cummins B6.6, X15, and L9 engines and all A26 engines
Bus, DuraStar, and MV air compressor inlet hose chaffing/leaking; equipped with Cummins ISB / B6.7 Engines
Other
20 bulletinsThis document will guide the user through troubleshooting steps to submitting a case file for a horsepower request.
This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes.
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(Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.)
MODELS INVOLVED: International MV Series trucks
Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
Switch Pack Programming Troubleshooting Information
This document will provide the user with cleaning options and procedures for aluminum bright work parts that become...
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stained or tarnished.
Cummins ISB Starting system diagnostics.
J1939 Data Link Source Address Information
Diagnosis of chassis wander complaints.
J1939 Data Link Source Address Information
J1939 Data Link Troubleshooting
Telematics installation guidelines - Only units with 500K data link
J1939 Data link source address information
Pico Scope CCOS (Crankcase Separator Test)
PicoScope Test One Channel RCT
PicoScope Test Resistance and Ohmmeter
PicoScope Test for Datalink (CAN) Health Shorts & opens
Certain 2022 and 2023 HV and MV series trucks and 2022 RE series commercial buses with feature codes 8TXK or 08TXM...
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(Bendix Wingman Prewire option) may have been built without the warning label to notify the driver that the collision mitigation system is not operational.
The grilles and/or grille surround may experience premature bubbling or peeling.
Electrical
16 bulletinsCertain International trucks and IC BusTM CE Series buses may have out of date BCM programing that may cause erroneous...
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fault codes after a vehicle sits for 2 or 3 days.
Certain International trucks and IC BusTM CE Series buses may have out of date BCM programing that may cause erroneous...
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fault codes after a vehicle sits for 2 or 3 days.
This document is to inform dealers, customers, and body builders/TEMs of a known BCM software issue with kernels 747 through 752.
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Units built after November of 2024 as well as older units that were updated with DLB between 11/5/2024 and 6/26/2025 with Remote Power Modules (RPM) modules, can experience loss of RPM functionality as well as other electrical system concerns. Kernel 753 was released to DLB on 6/26/2025 to address these concerns.
This document provides: Steps to take when switch pack programming fails, or when switch pack disappears after body...
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control module update Sample scenarios Additional information to assist readers in understanding DLB switch pack programming
Title: Erratic BCM and RPM Behavior with Kernel 747-752 Applies To: All MV, HV, HX with RPM modules
Title: Battery Disconnect Switch Replacement - Best Practices Applies To: All Models with Battery Disconnect Switch
This document details the procedure that must be followed to ensure proper alternator troubleshooting.
This document covers battery diagnostics, maintenance and storage requirement.
Cummins B6.7 Grid Heater Relay
General Wheel Speed Sensor Troubleshooting
N2 telematics module not communicating with OCC systems.
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Only models built with feature codes 10ADT, 10AEY, 10AEU, 10AEZ, 10AGB, or 10AGC built from 04/04/2019 through 11/01/2022.
PicoScope Wheel Speed Sensor Test
PicoScope Test - Battery Loss of Charge - Parasitic Draw Test
PicoScope Test 5V & 12V Intermittent Open and Short circuit diagnostics
eMV Battery Thermal Management System (BTMS) coolant lines unsupported; Electric MV only
EMV Cabin heat module enters locked state
Body & Paint
5 bulletinsIn some instances, the driver's or passenger's door pod may become unresponsive, where it will not respond to any manual...
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inputs from the driver or passenger. In some of these situations, it is possible for this symptom to be present without any fault codes becoming active. This article will guide the user through performing a hard reset of a door pod, which can restore the door pod to its operational condition, thereby avoiding the need for replacement. The steps in this article should be performed BEFORE diagnostics are completed for any active faults.
02/19/2025 - Added models including CE Bus with similar hood stop design 11/19/2024 - Updated service part numbers...
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06/11/2024 - Added rubber hose option as alternate repair 04/23/2024 - Added P/N for grease 03/29/2024 - Initial Article Release
This article addresses chassis lean conditions on all chassis.
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This does not include any diagnostics for body leans such as a cab lean. Keep in mind that a chassis lean may cause or accentuate a cab lean. Filling out the printable form and using the notes in blue will help you to determine the source of the lean and identify the action and parts required to correct the lean.
This document will guide the user through installing the upper mounting hardware in place of the missing C-Loop and/or...
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look down mirrors.
Cab water leak trouble shooting tips
Transmission
4 bulletinsThis document is to notify the field of an issue with BCM that causes various electrical system concerns after the vehicle sits for 2-3 days.
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This can affect all LT, RH, MV, HV models, 2021MY and up HX, 2024MY and up CE Bus with BCM kernel version 752, 753, and 754. Vehicles built or updated with DLB between 6/1/25 and 11/4/25 are suspected of having these kernels installed on the BCM. The most common complaint is that the steering wheel switches do not function, which, depending on the vehicle model and options, can cause the bus door, pupil warning lights, radio controls, marker interrupt, and cruise control to stop working. Other complaints can include short circuit faults from multiple sensor circuits attached to the BCM setting at the same time, the vehicle will not go into gear, the headlights are stuck on, the brake lights are stuck on, or the parking brake alarm is sounding (horn chirping) with the parking brake set. As of 11/4/25, these symptoms can be resolved by updating the BCM to kernel 755 or later with DLB.
Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
The steering gears may have been assembled with less than the required input shaft ball bearings and can result in a...
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fracture of the input shaft and loss of steering.
As reported by R. H. Sheppard Co., Inc.
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in their defect report to NHTSA (Recall 22E-047), steering gears were assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear worm-shaft and loss of vehicle steering.
Hybrid & EV
4 bulletinsCertain EV Series vehicles may have been built with incorrect MSD removal instruction labels.
Electric vehicle charging concerns; electric vehicles only
Electric vehicle charging concerns
Electric vehicle enters no torque mode
Suspension
3 bulletinsThis article addresses chassis lean conditions on MV with IROS suspension.
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It does not include any diagnostics for body leans, such as a cab lean. Keep in mind that a chassis lean may cause or accentuate a cab lean.
This document reminds technicians of the critical relationship between the truck's suspension and the driveline operating angles.
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The information applies to diesel, gas, and electric vehicles.
Front cab mount bushings/insulators MV, HV, DuraStar, and WorkStar vehicles used in severe vocations
HVAC & Climate
3 bulletinsTitle: A/C Refrigerant and Oil Capacities Applies To: All current models
CAC to air compressor intake tube separating at connection; Only MV series built 11/30/2022 through 02/09/2023.
Air Compressor Inlet Hose Chaffing / Leaking
Tires & Wheels
3 bulletinsTire Pressure Monitoring system; Feature Codes 16VLS, 16VUY, 16VVA, 16VVM, or 16VUZ
Tire Pressure Monitoring systems (TPMS); Only LT, RH, HV, HX, or MV series trucks with feature code 16VLS, 16VUY,...
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16VVA,16VUZ, or 16VVM
16VLS, 16VUY, 16VVA, and 16VUZ Tire Pressure Monitoring System (TPMS).
Infotainment
2 bulletinsThis tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files.
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It allows users to quickly load files either manually or directly from the Diamond Logic Builder Vehicles folder using VIN-based selection. As files are added or removed, the comparison runs automatically with no manual action required. The program presents results in an interactive table that shows feature codes, descriptions, access levels, and whether each feature is present in each selected file. Built-in search, filtering, and sorting make it easy to locate specific features or focus only on differences between files. Column visibility can be customized to show or hide descriptions and access information as needed. Users can remove files individually or clear all files at once, with results updating instantly. The tool also includes reporting and export options that reflect exactly what is visible on screen, allowing results to be printed, copied, saved as text, or exported to CSV for use in Excel or other spreadsheet tools. Overall, the program streamlines the process of comparing vehicle feature configurations, helping users quickly identify differences, validate setups, and document results without manual comparison or external tools.
eMV Noise Generator Overdrive Speakers; Electric MV only
Brakes
2 bulletinsThis document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and...
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windshields using an ultrasonic sound detector.
This document is to guide users to eliminate brake pedal rattle noise.
Lighting
2 bulletinsCertain MV Series trucks may have an incorrect driveshaft installed in the vehicle that can cause a vibration that may...
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be felt by the driver.
Fifth Wheel Unlock - Trailer Lamp Detection; Only Vehicles built with Feature Code 597017
Pre-Delivery & Maintenance
1 bulletinTitle: Service Portal iKNow Feedback Case Types Applies To: All
Software & Calibration
1 bulletinQLS Emergency Calibration Revert Process