2021 International LT recalls

• Brakes#2024655October 31, 2024

  9,683 units affected

  Issue: On certain trucks, poor signal strength could cause the electronic control unit (ECU) to stop working or not to work properly. As a result, some safety systems may not work, including the antilock braking system, automatic traction control, electronic stability control, active cruise control and the collision mitigation system. Safety Risks: Vehicle safety systems that don't work correctly could increase the risk of a crash. Corrective Actions: International Motors will notify owners by mail and advise you to take your truck to a dealership to reprogram the ECU software.

• Lights And Instruments#2023303May 26, 2023

  4,703 units affected

  Issue: On certain vehicles, the warning light for the antilock brake system (ABS) doesn't stay on when there's a problem with the system, and the vehicle is moving. Safety Risk: A driver that is not warned about a problem with the antilock brake system could have an increased risk of a crash. Corrective Actions: Navistar will notify owners by mail and instruct you to take your vehicle to a dealership to update the brake system electronic control unit software.

• Lights And Instruments#2023293May 18, 2023

  1,764 units affected

  Issue: On certain trucks, the backup lamps could be blocked and may not be visible. As a result, the trucks don't meet the requirements of the Canadian regulations. Note: This recall only affects trucks equipped with a pintle hook lowering bracket and feature code 01WPN, 01 WPS, or 01VAL. Safety Risk: Backup lamps that aren't visible could cause a person not to recognize that the vehicle is backing and increase the risk of a crash. Corrective Actions: Navistar will notify owners by mail and instruct you to take your truck to a dealership to install new tail stop/turn signal lamps with integrated backup lamps.

• Engine#2022518September 15, 2022

  1,171 units affected

  Issue: On certain trucks, the connecting rod bushings could fail due to a manufacturing defect. This could cause an engine failure that can result in a sudden loss of power with an inability to restart. Note: This is an expansion of recall 21505 (Transport Canada Recall 2021-240). Safety Risk: A sudden loss of engine power could increase the risk of a crash. Additionally, a stalled vehicle could also increase the risk of crash. Corrective Actions: Navistar will notify owners by mail and instruct you to take your truck to a dealer install a detection system to warn a driver if there is a problem with the connecting rod bushing. The system will cause a red engine warning light to turn on if a problem is detected, before a connecting rod failure happens. Engines found with a suspect connecting rod will be repaired.

• Electrical#2022407July 28, 2022

  1,417 units affected

  Issue: On certain trucks, the battery ground cables that connect to the vehicle frame could overheat. If this happens, the battery post could separate and cause a loss of electrical power. As a result, the engine could shut off suddenly. Safety Risk: Overheated battery ground cables could create a burn risk. A loss of power while driving could increase the risk of a crash. Corrective Actions: Navistar will notify owners by mail and instruct you to take your truck to a dealership to replace the alternator positive and ground cables. The dealer will also reroute the alternator ground connection from the frame rail to the starter.

• Engine#2021240April 22, 2021

  790 units affected

  Issue: On certain trucks, the connecting rod bushings could fail due to a manufacturing defect. This could cause an engine failure that can result in a sudden loss of power with an inability to restart. Note: This replaces recall 20504 (Transport Canada recall 2020-198). Trucks that previously had new connecting rods installed or that have the latest engine software update do not require this repair. Safety Risk: A sudden loss of engine power could increase the risk of a crash. Additionally, a stalled vehicle could also increase the risk of crash. Corrective Actions: Navistar will notify owners by mail and instruct you to take your truck to a dealer install a detection system to warn a driver if there is a problem with the connecting rod bushing. The system will cause a red engine warning light to turn on if a problem is detected, before a connecting rod failure happens. Engines found with a suspect connecting rod will be repaired.

• Brakes#2021196April 1, 2021

  32 units affected

  Issue: On certain trucks, the spring brake chambers may have been built with defective springs. Over time, this could cause wear and result in an air leak that can cause the parking brake to apply suddenly. Safety Risk: A parking brake that self-applies while driving could increase the risk of a crash. Corrective Actions: Navistar will notify owners by mail and instruct you to take your truck to a dealer to inspect the spring brake chambers. Any chamber with a shifted pressure plate will be replaced.

• Powertrain#2021095February 24, 2021

  6 units affected

  Issue: On a small number of trucks, the cap screws that attach the flywheel to the crankshaft may not have been properly tightened. As a result, the flywheel could detach. If this happens, there could be a loss of power to the wheels and parts could be ejected from the engine compartment. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Parts that are ejected from the engine compartment could create a risk of injury. Corrective Actions: Cummins will notify owners by mail and instruct you to take your truck to a Cummins authorized service center to tighten the flywheel cap screws. Cummins will repair damaged components, as necessary.

• Electrical#2021068February 17, 2021

  5,146 units affected

  Issue: On certain trucks, the ring terminal that attaches the battery ground cable to the frame may break. If this happens, there could be a loss of electrical power and the engine could shut off suddenly. Safety Risk: A loss of power while driving could increase the risk of a crash. Corrective Actions: Navistar will notify owners by mail and instruct you to take your vehicle to a dealer to replace the battery ground cable.

Canadian data updated August 24, 2026

• ELECTRICAL SYSTEM:SOFTWARE#25V817000November 25, 2025

  International Motors, LLC (International) is recalling certain 2016 7600, 2016-2023 Lonestar, 2018 8600, 2018-2023 LT, 2021-2026 MV, 2022-2023 RH, 2023-2026 HX, and 2025-2026 HV vehicles. 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, such as 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.

  Remedy: International will work with Bendix to reprogram the ECU, free of charge. Owner notification letters were mailed January 19, 2026. Owners may contact International's customer service at 1-800-448-7825. International's number for this recall is 25525. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning January 12, 2026.

• ELECTRICAL SYSTEM:SOFTWARE#24V818000October 31, 2024

  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.

  Remedy: 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#23V370000May 25, 2023

  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 Brake Systems."

  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.

  Remedy: 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.

• EXTERIOR LIGHTING:BACK UP LIGHTS#23V353000May 18, 2023

  Navistar, Inc. (Navistar) is recalling certain 2000-2003 International 8100, 2001-2003 International 9100i, 2001-2007 International 9400i, 2001-2010 International 9200i, 2002-2007, 2009 International 8500, 2003-2007, 2013 International 9900i, 2003-2018 International 8600, 2004, 2007 International 9900iX, 2008-2018 International ProStar, 2010-2011, 2013, 2016 International LoneStar, 2011-2012, 2016 International 4400, 2017-2024 International LT, 2018-2024 International RH, 2019-2021 International LS, 2019-2024 International MV vehicles. The back-up lights offer low visibility when the vehicle is in reverse and bobtail mode. Also, the vehicles have not been equipped with additional unobstructed back-up lights. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

  Risk: Low visibility or obstructed back up lights may not alert other drivers that the vehicle is backing up, increasing the risk of a crash.

  Remedy: Dealers will replace the existing rear stop/turn signal lights, free of charge. Owner notification letters were mailed May 06, 2024. Owners may contact Navistar's customer service at 1-800-448-7825. Navistar's number for this recall is 23514.

• ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE#23V220000March 30, 2023

  Navistar, Inc. (Navistar) is recalling certain 2021-2024 International LT and RH trucks. The engine control module (ECM) may be unresponsive to throttle pedal application, which can cause the vehicle to unexpectedly slow to idle speed on the road.

  Risk: A vehicle that unexpectedly slows to idle speed on the roadway can increase the risk of a crash.

  Remedy: Dealers will update the ECM software, free of charge. Owner notification letters are expected to be mailed May 26, 2023. Owners may contact Navistar's customer service at 1-800-448-7825. Navistar's number for this recall is 23509.

• ENGINE#22V691000September 15, 2022

  Navistar, Inc. (Navistar) is recalling certain 2018-2021 International HV, 2018-2020 International HX, 2018-2021 International LT and International RH vehicles. The connecting rod wrist pin may crack, resulting in connecting rod failure.

  Risk: Connecting rod failure can cause an engine shutdown, increasing the risk of a crash.

  Remedy: Dealers will install new knock detection software to warn the driver prior to engine connecting rod failure, and replace connecting rods as necessary, free of charge. Owner notification letters were mailed February 24, 2023. Owners may contact Navistar's customer service at 1-800-448-7825. Navistar's number for this recall is 22518.

• ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES#22V546000July 28, 2022

  Navistar, Inc. (Navistar) is recalling certain 2018-2021 International LoneStar and 2016-2021 International LT vehicles. The cables that connect the batteries to the vehicle frame may become excessively hot, and in some cases, cause battery post separation.

  Risk: Excessively hot battery ground cables may cause personal injury during battery maintenance repairs. In addition, a battery post that separates from the battery can result in an engine stall without warning, increasing the risk of a crash.

  Remedy: Dealers will replace the alternator positive and ground cables, and relocate the alternator ground to the starter, free of charge. Owner notification letters are expected to be mailed September 26, 2022. Owners may contact Navistar's customer service at 1-800-448-7825. Navistar's number for this recall is 22516.

• ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES#22V164000March 17, 2022

  Navistar, Inc. (Navistar) is recalling certain 2018-2023 International LT vehicles equipped with a 1500W Purkeys inverter system. The positive battery cable may be incorrectly routed, causing it to chafe on the side skirt frame and become damaged.

  Risk: A damaged battery cable can cause an electrical short, increasing the risk of a fire.

  Remedy: Dealers will replace any damaged battery cables and install new inverter cable brackets and saddles, free of charge. Owner notification letters were mailed May 16, 2022. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 22507.

• ENGINE#21V281000April 22, 2021

  Navistar, Inc. (Navistar) is recalling certain 2019-2021 International LT and RH trucks. The wrist pin may crack and cause connecting rod failure.

  Risk: Connecting rod failure may cause a stall, increasing the risk of a crash.

  Remedy: Navistar will notify owners and dealers will install a detection system software to warn the driver prior to engine connecting rod failure and engines with a defective connecting rod will be repaired, free of charge. Vehicles previously repaired under Recall 20V255 that received only a software update will need to return to the dealer for the new remedy. Owner notification letters were mailed on June 11, 2021. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21505.

• SERVICE BRAKES, AIR#21V227000April 1, 2021

  Navistar, Inc. (Navistar) is recalling certain 2021 International LT, RH, MV, and HV vehicles equipped with Bendix pressure switches. A retainer was not properly seated in the SC-3 single check valve and may not provide source air isolation when pressure is applied. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."

  Risk: Unintended spring brake application may occur, increasing the risk of a crash.

  Remedy: Navistar will notify owners, and dealers will replace the SC-3 check valves, free of charge. Owner notification letters were mailed on May 28, 2021. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21503.

• PARKING BRAKE#21V226000April 1, 2021

  Navistar, Inc. (Navistar) is recalling certain 2021 International LT and International RH vehicles. The spring inside the spring brake chamber may allow the pressure plate to shift and wear a hole through the diaphragm.

  Risk: A hole in the diaphragm may cause an air leak, causing the parking brake to engage and increasing the risk of a crash.

  Remedy: Navistar will notify owners, and dealers will inspect and, as necessary, replace the spring brake chambers, free of charge. Owner notification letters were mailed on May 28, 2021. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21502.

• ENGINE#21V112000February 24, 2021

  Navistar, Inc. (Navistar) is recalling certain 2021 International LT vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.

  Risk: A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.

  Remedy: Navistar will work with the engine manufacturer Cummins Inc. to notify owners, and Cummins dealers will properly tighten the capscrews and inspect for possible damage, repairing any damage found, free of charge. The recall began on March 29, 2021. Owners may contact Navistar customer service at 1-800-448-7825.

• ENGINE#21V079000February 17, 2021

  Navistar, Inc. (Navistar) is recalling certain 2018-2021 International LoneStar and 2017-2021 International LT vehicles. The battery ground cable ring terminal at the frame connecting point may break, resulting in a loss of electrical power and unintended engine shutdown without warning.

  Risk: An unexpected engine shutdown can increase the risk of a crash.

  Remedy: Navistar will notify owners, and dealers will replace the battery ground cable, free of charge. The recall began on April 16, 2021. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21501.