2021 International HX technical service bulletins
150 technical service bulletins and manufacturer communications cover the 2021 International HX.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This article provides service part information for replacing a cracked gauge cluster lens
- Effective January 1, 2008 , engines built for vehicles registered in California or a CARB (Air Resources...
- This article provides guidance to dealership personnel, Technical Services personnel, Dealer Service...
- This document will guide the user through the changes of the dielectric grease/coatings used in certain...
- Certain International® trucks and IC BusTM CE Series buses may have out of date BCM programing that may
- This document provides guidance for assessing the feasibility of implementing a customer-requested change...
- This document is to inform dealers, customers, and body builders/TEMs of a known BCM software issue with...
- New CARB Idle Reduction Change Request
- This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files
- Engine replacements for all International engines will need to follow this procedure.
- This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle...
- This document provides: Steps to take when switch pack programming fails, or when switch pack disappears...
- This document will guide the user through understanding Prop Shaft Codes and understanding the variations...
- In some instances, the driver's or passenger's door pod may become unresponsive, where it will not respond...
- In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of...
- This document is to notify the field of an issue with BCM that causes various electrical system concerns...
- Title: Belt Noise or Edge Fraying in HX Vehicles Equipped with S13 Applies To: S13 Engine Serial Number...
- Title: Service Portal iKNow Feedback Case Types Applies To: All
- Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
- Title: HX Rattle and Squeak Service Instructions Applies To: HX Series Trucks exhibiting complaints of a...
- Title: A/C Refrigerant and Oil Capacities Applies To: All current models
- Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
- Title: S13 Gear Housing Leak (By The Air Compressor) Applies To: S13 Integrated Powertrain LT RH HX
- Title: Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition...
- Title: Erratic BCM and RPM Behavior with Kernel 747-752 Applies To: All MV, HV, HX with RPM modules
- Title: Replacing the Crankshaft Gear on S13 Engines
- Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
- Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
- Title: Supplemental A26 MAF Fault Diagnostics Applies To: All A26 Engines
- This document reminds technicians of the critical relationship between the truck's suspension and the...
- Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of...
- Title: Supplemental A26 MAF Fault Diagnostics
- Title: Connecting an Auxiliary APU to the S13 Coolant System
- International® HX® Series trucks built 9/1/2021 thru 8/21/2024 with Bendix 4-Channel Air Brakes ABS or...
- This article addresses chassis lean conditions on all chassis
- This document will guide the user through repairing frame cracks and installing inner and outer frame...
- This document will guide the user through relocating the No-Idle system's voltage sense source from the...
- This document will guide the user through diagnosing X15 belt noise and fretting on the HX chassis only
- The purpose of
- This document will provide the user with cleaning options and procedures for aluminum bright work parts...
- This document is to guide users to eliminate brake pedal rattle noise.
- This document details the procedure that must be followed to ensure proper alternator troubleshooting.
- Certain International vehicles built with A26 engines does meet the emission requirements for...
- Suggested alignment target values when performing a vehicle axle alignment.
- Starter Diagnostics and warranty claim procedure; all engines EXCLUDING Cummins ISB engine with Allison...
- A26 & S13
- J1939 Data Link Source Address Information
- Tire Pressure Monitoring system; Feature Codes 16VLS, 16VUY, 16VVA, 16VVM, or 16VUZ
- A26 and S13 Fuel Gelling; only vehicles equipped with International A26 or S13 engines
- Rebuilding Cylinder Heads on Certain MaxxForce 11/13, N13, and A26 engines; 2010 to present.
- Endurant Plumbing Retrofit; only models built with endurant transmission built before 11/01/2023
- No Idle HVAC run time shorter than expected
- Diagnosis of chassis wander complaints.
- General Wheel Speed Sensor Troubleshooting
- How to request a horsepower quote; all International and Cummins engines
- HX, PayStar, and 9900 Transmission Shifter Disengaging
- J1939 Data Link Troubleshooting
- Snap-On torque wrench requirement for all big bore engine connecting rod bolts; A26, MaxxForce 13, N13 engines
- Potential A/C Compressor Parts shortage
- Fifth Wheel Unlock
- QLS Emergency Calibration Revert Process
- Removal and Installation of the Air Cleaner Assembly Cover and Air Filters; All Engines and only HX and LT...
- This Emissions Recall applies to truck models for which, per agreement with EPA and CARB, Navistar, Inc....
- New air compressor incorporates an oil feed dowel O-ring
- N2 telematics module not communicating with OCC systems
- Per agreement with EPA and CARB, Cummins, Inc. provided an emergency calibration for Cummins ISB, B6.7,...
- Tire Pressure Monitoring systems (TPMS); Only LT, RH, HV, HX, or MV series trucks with feature code 16VLS,...
- HX series grille surround; only models shipped without grille surround installed
- Lift Axle potential interference; adjusting clearance when lift axle is in the "up" position
- New Air compressor Incorporates an oil feed dowel O-ring; only models built with MaxxForce 11/13, N13, or...
- Cummins Programming guide and fault codes285 & 265; only vehicles built with Cummins B6.7, X15, or L9 engines
- Telematics installation guidelines
- Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles...
- Rebuilding cylinder heads on certain EPA 2010 MaxxForce 11/13, N13, and A26 Engines
- Rebuilding Cylinder Heads on Certain International MaxxForce 11/13 engines and all International N13 and...
- The Proposition 65 and/or DEF warning light labels may not have been installed at time of vehicle manufacture.
- HX vertical exhaust S-pipe alignment
- Installation of the 7104674C92 Engine Sensor Harness on 2021 and Newer International A26B engines.
- QLS Emergency ECM Calibration; only models equipped with Cummins B6.7, X15, L9, or International A26 engines
- HX series rear crossmember cracking.
- QLS Emergency Calibration
- J1939 Data link source address information
- HX Radiator Debris Damage
- Pico Scope CCOS (Crankcase Separator Test)
- PicoScope Test 5V & 12V Intermittent Open and Short circuit diagnostics
- PicoScope Test
- PicoScope Test for Datalink (CAN) Health Shorts & opens
- PicoScope Test Resistance and Ohmmeter
- PicoScope Test One Channel RCT
- Under certain conditions, the Engine Control Module (ECM) programming may not detect when the Exhaust Gas...
- The Body Control Module (BCM) may have outdated software that could result in active Over The Air (OTA)...
- Potential A/C Compressor Parts Shortage
- International A26 engine fuel delivery pressure sensor and harness pigtail eliminated
- Cab water leak trouble shooting tips
- HX series band clamp assembly installation guide
- 16VLS, 16VUY, 16VVA, and 16VUZ Tire Pressure Monitoring System (TPMS).
- Certain HX series trucks may have a DEF tank jumper harness with a missing circuit
- Certain HX series trucks built 01/21/2021 through 09/20/2021.
- Cab water leak troubleshooting tips; HX with steel cab only
- Water leaks past plastic vapor barrier sheet in the inner cavity of the cab entry door
- Installing P/N 7104373C91 A26 Engine Sensor Harness
- 2021 A26
- The No Idle HVAC blower motor may stay ON when ignition ignition is turned to the key OFF position...
- Greenhouse Gas Phase 2 Regulatory Compliance Implementation
- QLS Emergency Calibration; Models equipped with 2016 and newer Cummins B6.7, X15 and L9 engines or...
- Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
- QLS Emergency Calibration; Models with 2016 Cummins ISX, A26 and EPA 2017 and newer Cummins X15, L9, or...
- How to obtain As built parameter list
- New or replacement body control Module (BC,BCM) not detected; Gen 4 BCM
- The Environmental Protection Agency (EPA) and California Air Resources Board (CARB) have approved an...
- The ESPAR heater may not function properly because of a constant voltage supply from the BCM to the ESPAR...
- QLS Emergency Calibration
- Engine Oil Capacities
- Oil leaks at the Bottom of the Oil Filter Module; Only International A26, N13, or 2010 and newer 11 and 13...
- Certain HX Series trucks may have been built with an incorrect dash mounted air filter minder.
- Snap-On torque wrench requirement for all big bore engine connecting rod bolt(s).
- Cab water leak troubleshooting tips
- General wheel speed sensor troubleshooting
- Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
- 2022 Model year HX series exhibiting complaints of a rattle or squeak from the vertical exhaust slider due...
- CPA BEAM RCT and Idle Test for A26 engine; only trucks equipped with International A26 engine
- A26 Fuel Delivery Pressure Sensor (FDP) and Harness Pigtail Eliminated; only trucks equipped with...
- Radio clock changes time automatically; Only vehicles built after March 2020 and excluding CV
- Frame Rail Straightness Inspection Procedure
- Tridem Axle Oil Temperature Cluster Messages
- Suggested alignment target values when performing a vehicle axle alignment
- Programming Procedure for Center Panel Switch Packs
- 1 channel CPA RCT test for A26 or CV 6.6L; Only trucks built with International A26 or 6.6 engines
- Fuel Filters, Winter Additives, and Blending Fuels for Cummins® Engines
- For certain International HX Series trucks with Cummins® X15 engines, the bolts that attach the idler...
- The bolts that attach the trailing arm to the steerable auxiliary lift axle may not be long enough to...
- Dielectric Grease Change
- Driveline Information Center and Troubleshooting Procedures
- Bluetooth Cannot Be Connected to Radio
- Repair Procedures for Vehicles Struck by Lightning
- Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics
- This document will guide the user through the proper use of the A26 Misfire Detection Session to determine...
- A/C Refrigerant and Oil Capacities
- Radio Diagnostics and Information
- Chrome Plated C-Loop Mirror Flat Glass Cracks
- Cleaning and Disinfecting Trucks and Buses
- Hx X15
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