2021 International Hx problems, complaints & recalls
Safety recalls (4)
Electrical System:software 2024-10-31 · campaign 24V818000 · 105,276 vehicles
Defect: International Motors, LLC (International) is recalling certain 2021-2024 Lonestar, 2021-2025 RH, HV, MV, LT, HX, and 2022 PROSTAR vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop working.
Risk: Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may have diminished or lost functionality, increasing the risk of a crash.
Fix: International will work with Bendix to reprogram the ECU software, free of charge. Owner notification letters were mailed December 16, 2024. Owners may contact International customer service at 1-800-448-7825. International's number for this recall is 24515.
Service Brakes, Air:antilock:abs Warning Light 2023-05-25 · campaign 23V370000 · 59,684 vehicles
Defect: Navistar, Inc. (Navistar) is recalling certain 2021-2024 International HV, HX, LoneStar, LT, MV, eMV, and RH trucks, and IC Bus CE, 2021-2023 IC Bus RE, and 2022-2023 IC Bus TC Commercial Buses. The anti-lock brake system (ABS) indicator light does not remain illuminated when a malfunction exists, and when the vehicle's ignition switch is on, and the vehicle is in motion. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brak
Risk: An ABS indicator light that fails to remain illuminated will not alert the driver of an ABS malfunction, which could increase the risk of a crash.
Fix: Towing variant vehicles under this campaign will not be repaired under recall 24V-8918. Dealers will update the software, free of charge. Owner notification letters are expected to be mailed July 24, 2023. Owners may contact Navistar's customer service at 1-800-448-7825. Navistar's number for this recall is 23515.
Structure:body 2023-03-16 · campaign 23V170000 · 5,769 vehicles
Defect: Navistar, Inc. (Navistar) is recalling certain 2020-2024 International HX vehicles. The grille surround may corrode and detach from the truck.
Risk: A detached grille surround can fall to the roadway and become a road hazard, increasing the risk of a crash.
Fix: Dealers will replace the grille surround, free of charge. Owner notification letters were mailed November 21, 2023. Owners may contact Navistar's customer service at 1-800-448-7825. Navistar's number for this recall is 23507.
Suspension:multiple Axle 2020-08-20 · campaign 20V494000 · 80 vehicles
Defect: Navistar, Inc. (Navistar) is recall certain 2020-2021 International HX vehicles equipped with SL2065 steerable lift axle suspension systems with a 20,000lb capacity. The lower rear pivot cap screws that connect the trailing arm to the steerable auxiliary lift axle that may not be long enough to sufficiently engage the locking feature of the corresponding nuts.
Risk: The short screws can cause the hardware to separate from the suspension system and become road hazards, increasing the risk of a crash and/or injury.
Fix: Navistar will notify owners, and dealers will replace all of the lower rear pivot cap screws and associated nuts and washers, free of charge. The recall began October 8, 2020. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 20507.
Service bulletins (147)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Electrical System 2026-06-09 · IK0800560 · Service Bulletin/Repair Instructions
this document will guide the user through the changes of the dielectric grease/coatings used in certain areas on all 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 t
Electrical System 2026-05-22 · 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.
Electrical System 2026-04-23 · 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 green
Electrical System 2026-04-07 · 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.
Electrical System 2026-02-13 · IK0800684 · Service Bulletin/Repair Instructions
this document is to inform dealers, customers, and body builders/tems of a known bcm software issue with kernels 747 through 752. 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 experie
Engine 2026-02-05 · IK2600090 · Other
new carb idle reduction change request
Showing the 6 most recent of 147 bulletins. Search all of them free at nhtsa.gov.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.