2024 Ic Bus Cesb TSBs
78 Technical Service Bulletins across 12 categories
Categories
Other
18 bulletinsVIN and Incomplete Vehicle Document Label Replacement Procedure
IC Bus Operator's Manuals
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.)
SUBJECT: Hill Hold Assist Installation
Title: Driveline Vibration w/SPL170 Applies To: 2021 - 2025 International IC Bus Electric CE Series
Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
Title: Next Gen Bus Incorrect Cluster Lens for Allison Mode Switch Applies To: Next Gen Bus
Title: 6090/6091 Connector Damage Applies To: IC Bus Electric CE Series, International eMV Series
Title: Next Gen Bus Top Step Tread Nosing Repair Applies To: Next Gen Bus, PB11000 and PC11000
Applies To: Units built 12/20/2022 - 11/11/2024 On the following models with Feature Codes: CE Bus- 0510234 LT RH-...
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001MBS & 0510234 LT RH- 008TRR or 0510234 & 001LRM or 001LRV or 001LRN or 001LRL
This document will provide the user with the correct ride height specification for a flat-floor special needs CE Bus with feature code 14WAW.
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The ride height should be 11.13" (+-.25").
J1939 Data Link Source Address Information
Diagnosis of chassis wander complaints.
Luggage rack upholstery repair; only busses equipped with luggage rack.
J1939 Data Link Source Address Information
J1939 Data Link Troubleshooting
Telematics installation guidelines - Only units with 500K data link
Engine
14 bulletinsThe purpose of this article is to provide updated repair guidelines for the engine oil pan leak on all 8.8L gasoline and LPG engines.
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Engine oil can leak from the rear of the engine oil pan due to an excessive gap in the sealing area between the engine oil pan and the engine block.
The purpose of this article is to provide updated repair guidelines for the engine oil pan leak on all 8.8L gasoline and LPG engines.
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Engine oil can leak from the rear of the engine oil pan due to an excessive gap in the sealing area between the engine oil pan and the engine block.
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.
Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
Certain IC Bus CE Series buses may have an incorrect concentration of antifreeze / coolant installed in the engine
How to request a horsepower quote; all International and Cummins engines
CE Bus Engine Cover Sealing
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
Electrical
13 bulletinsThis document will guide the user through installing 12V disconnect label to the battery door.
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.
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 will guide the user through inspecting the air conditoning cube fuse at the low-voltage (LV) battery for the correct amperage rating.
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It has been found, that certain Electric CE Series Buses had a 75A rating cube fuse installed vs the correct 150A rating needed.
SUBJECT: High-Voltage Distribution Unit (HVDU) Connector Plug
Title: Next Gen CE Bus Starter Interlock Dash Chime Applies To: Next Gen CE Bus with starter interlock feature built...
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prior to 2/19/25
Electrical Door Calibration Confirmation
Certain electric vehicles may have been built without the Level 2 Manual Service Disconnects (MSDs).
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This document walks the user through installing the Level 2 MSDs and high-voltage circuits needed
Updates to Air Conditioning (A/C) Control Module Software and ECU Software links in Tool Information table.
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Updates to software references in Steps 13, 23, 29, 30, 39, and 40. Added note prior to Step 14.
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
Body & Paint
10 bulletinsThis document will guide the user through adding a water deflector above the exterior entrance door switch for all Next...
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Gen Buses MY2024 through MY2026
Entrance door set screw may loosen over time and with use.
Entrance door set screw may loosen over time and with use.
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.
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See symptoms below for an example of the issue.
This document provides guidance for troubleshooting issues with the entrance door.
Title: Alternate Entrance Door Skirt Light Non-Functioning Repair
Title: Missing ground for XVIEW mirror light Applies To: Vehicles Marked In Service Portal
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.
These certain buses may have roof water leaks resulting from incorrect assembly described in Roof Joint Recalls 23501...
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and 23502.
Bus roof leaks
Fuel System
5 bulletinsThis document provides guidance for troubleshooting issues with the entrance door of the Next Gen CE Bus.
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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.
This document is for Diesel buses MY2020, MY2021, MY2022, MY2023, and MY2024 specifically built between 11/30/20 and...
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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.
This document will instruct the user on installing and programming a fuel water separator heater system for a Next Gen...
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Bus built without the heater option.
Title: Next Gen Bus Heated Fuel Water Separator Retrofit Applies To: Next Gen Bus
Bus Diesel fuel Cap Leaks; only models built 11/30/2020 through 05/18/2023
HVAC & Climate
5 bulletinsTitle: A/C Refrigerant and Oil Capacities Applies To: All current models
Title: Servicing Air Conditioning Systems on Electric Vehicles
Title: Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Models
Title: Next Gen Bus AC Bracket Interference with Stepwell Heater Hose
Air Compressor Inlet Hose Chaffing / Leaking
Brakes
3 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.
uide the user through the details on faults set during the use of EV regenerative braking during cold weather operations
This document is to guide users to eliminate brake pedal rattle noise.
Transmission
3 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
Title: Next Gen Bus Allison 2500 Transmission Yoke Bolt Torqu
Pre-Delivery & Maintenance
3 bulletinsTitle: Service Portal iKNow Feedback Case Types Applies To: All
Bus seat back foam inspection guidelines
Webasto Thermo Pro 90 Service and Repair Manual; Only CE bus with feature code 0049JAN or 0049JAP
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.
Title: Radio Clock is Freezing Applies To: Next Gen CE Bus
Software & Calibration
1 bulletinThis article provides step-by-step guidance for troubleshooting issues with Techline Connect software.
Hybrid & EV
1 bulletinTitle: Electric Vehicle Air Dryer Operation