Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
IK2200156
Service Bulletin/Repair Instructions
This document provides guidance for troubleshooting issues with the entrance door of the Next Gen CE Bus. While the primary focus is on achieving a properly adjusted latching entrance door, it also includes additional helpful tips. Please note that this document is not exhaustive and only addresses some common issues and their resolutions. For more detailed information, refer to Service Manual 0001283373. Also, please check the Service Portal for any open field campaigns for door improvements, such as AFC 26901 for a larger set screw. If this article or the Service Manual does not cover the topic, please create a case file for more specific assistance.
26102
Service Campaign
This document will guide the user through installing 12V disconnect label to the battery door.
26901
Service Campaign
Certain 2025 thru 2027 IC Bus™ CE Series school buses and IC Bus™ Electric CE Series school buses entrance doors may fall out of adjustment over time and with use. A door that is not adjusted properly may result in an improperly closed door and trigger an open door warning light on the dashboard.
26101
Service Campaign
Certain International® trucks and IC BusTM CE Series buses may have out of date BCM programing that may cause erroneous fault codes after a vehicle sits for 2 or 3 days.
26104
Service Campaign
Entrance door set screw may loosen over time and with use.
IK2200172
Service Bulletin/Repair Instructions
This document will guide the user through adding a water deflector above the exterior entrance door switch for all Next Gen Buses MY2024 through MY2026
IK2800082
Service Bulletin/Repair Instructions
VIN and Incomplete Vehicle Document Label Replacement Procedure
IK1500105
Service Bulletin/Repair Instructions
This document is for Diesel buses MY2020, MY2021, MY2022, MY2023, and MY2024 specifically built between 11/30/20 and 5/18/23 that are experiencing fuel leaks at the fuel tank cap for not being seated fully, and for MY2024 and MY2025 buses built between 1/2/24 and 9/19/25 for fuel necks being loose.
IK2600255
Service Bulletin/Repair Instructions
This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. 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.
IK2700129
Service Bulletin/Repair Instructions
This article provides step-by-step guidance for troubleshooting issues with Techline Connect software.
IK2200166
Service Bulletin/Repair Instructions
This document will instruct the user on installing and programming a fuel water separator heater system for a Next Gen Bus built without the heater option.
IK0800691
Service Bulletin/Repair Instructions
This document is intended to inform dealers, technicians, parts departments, and customers of a change made to radio software to support updated Collision Mitigation, Lane Departure Warning (LDW), and Blind Spot Monitoring systems. If replacing the radios on the vehicles described below, the radio either needs to be built after a specific build date or have the software version verified/updated. If outdated radio software is used on these vehicles, the audible tones for these systems may not be heard by the driver. The applicable vehicles were all built with the correct radio. This iKNnow article only applies if replacing the radio for a service event in one of the vehicles listed below.
IK2600090
Other
New CARB Idle Reduction Change Request
IK4300035
Service Bulletin/Repair Instructions
This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files. 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.
IK2600047
Service Bulletin/Repair Instructions
Engine replacements for all International engines will need to follow this procedure.
IK1600272
Service Bulletin/Repair Instructions
This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and windshields using an ultrasonic sound detector.
IK1201009
Service Bulletin/Repair Instructions
In some geographic areas, ambient temperatures reaching below 40°F (4°C), including high levels of humidity, an 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 currently available winter front covers that can be installed on the front grille and bumper to reduce cold air flow to the engine compartment.
IK0600030
Service Bulletin/Repair Instructions
This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes. (Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.)
IK2200169
Service Bulletin/Repair Instructions
This document will guide the user through repairing a Next Gen CE Bus Driver's Window with loose, displaced, or falling-out upper or lower seals. See symptoms below for an example of the issue.
IK2200119
Service Bulletin/Repair Instructions
IC Bus Operator's Manuals
IK0800688
Service Bulletin/Repair Instructions
This 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. 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.
IK3400001
Service Bulletin/Repair Instructions
Title: Service Portal iKNow Feedback Case Types Applies To: All
IK2300017
Service Bulletin/Repair Instructions
Title: Electric Vehicle Air Dryer Operation
IK1400005
Service Bulletin/Repair Instructions
Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
IK2300042
Service Bulletin/Repair Instructions
Title: Driveline Vibration w/SPL170 Applies To: 2021 - 2025 International® IC Bus® Electric CE Series
24213
Service Campaign
SUBJECT: Hill Hold Assist Installation
25106
Service Campaign
SUBJECT: High-Voltage Distribution Unit (HVDU) Connector Plug
IK0800686
Service Bulletin/Repair Instructions
Title: Radio Clock is Freezing Applies To: Next Gen CE Bus
IK1900022
Service Bulletin/Repair Instructions
Title: A/C Refrigerant and Oil Capacities Applies To: All current models
IK0900157
Service Bulletin/Repair Instructions
Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
IK2200170
Service Bulletin/Repair Instructions
Title: Next Gen CE Bus Starter Interlock Dash Chime Applies To: Next Gen CE Bus with starter interlock feature built prior to 2/19/25
IK2300021
Service Bulletin/Repair Instructions
Title: Servicing Air Conditioning Systems on Electric Vehicles
IK0500054
Service Bulletin/Repair Instructions
Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
IK2600069
Service Bulletin/Repair Instructions
Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
IK2200088
Service Bulletin/Repair Instructions
Title: Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Models
IK2300041
Service Bulletin/Repair Instructions
Title: 6090/6091 Connector Damage Applies To: IC Bus® Electric CE Series, International® eMV™ Series
IK0800672
Service Bulletin/Repair Instructions
Applies To: Units built 12/20/2022 - 11/11/2024 On the following models with Feature Codes: CE Bus- 0510234 LT RH- 001MBS & 0510234 LT RH- 008TRR or 0510234 & 001LRM or 001LRV or 001LRN or 001LRL
IK2200155
Service Bulletin/Repair Instructions
This document will guide the user through correcting a water leak on the Advantage Roof Hatch due to improper harness routing. This is for buses built with the Advantage Roof Hatch between 3/18/24 and 5/1/24.
IK1400023
Service Bulletin/Repair Instructions
This article addresses chassis lean conditions on all chassis. 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.