NHTSA vehicle safety data

2021 International LT Recalls & Complaints

The 2021 International LT has 13 NHTSA recall campaigns and 3 owner complaints on file as of November 3, 2026. Recall repairs are usually free at an authorized International dealer.

NHTSA recall and complaint data for the 2021 International LT. Recall data is refreshed daily from NHTSA.

2021 International LT owner complaints

Owners have filed 3 complaints with NHTSA about the 2021 International LT, describing incidents dated October 14, 2021 to October 9, 2026.

Most-cited components

  • Electrical System 1 complaint
  • Engine 1 complaint
  • Forward Collision Avoidance 1 complaint
  • Fuel/Propulsion System 1 complaint
  • Service Brakes 1 complaint
  • Structure 1 complaint

Of the 3 complaints on file, 1 reports a crash; across all 3 complaints, owners report 2 injuries (owner-reported, not verified by NHTSA).

Newest complaints

  • ODI #11770753 · Filed

    Odometer Fraud. The contact sold a 2021 International LT625. The contact stated that he was a car dealer who had sold the vehicle and several other vehicles to a fleet dealer. The vehicles were a dealer sale. At the time of sale, the vehicles had approximately 600,000 miles; however, the fleet…

  • ODI #11514699 · Filed

    The brake assist malfunctioned causing the brakes to abruptly stop without cause or warning. When the braking system abruptly stopped it caused a jack knife and lost of a trailer on a congested highway with vehicles in all lanes, I was able to finally get control of the tractor with out causing…

  • ODI #11442614 · Filed

    I drive tractor trailer for JB Hunt. Over the last 4 Years, the three trucks I have been assigned to have had exhaust leaks that vented into the cab. One was a Freightliner (approx 2017 model), and two have been Internationals. These exhaust leaks caused me medical problems, requiring that I take…

Read all 3 complaints

ECU Malfunction May Impair Safety Systems

NHTSA #25V817000 · Electrical System — Software · NHTSA notice

Reported November 25, 2025 · International Motors, LLC

Potentially affected: 678 vehicles

Repair completion: 33.63% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

International campaign 25525 · Owners notified January 19, 2026

Defect description

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.

Safety consequence

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.

Manufacturer 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.

ECU Malfunction May Impact Safety Systems

NHTSA #24V818000 · Electrical System — Software · NHTSA notice

Reported October 31, 2024 · International Motors, LLC

Potentially affected: 105,276 vehicles

Repair completion: 84.89% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

International campaign 24515 · Owners notified December 16, 2024 · Vehicles built April 1, 2020 – October 10, 2024 (per NHTSA)

Defect description

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.

Safety consequence

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.

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to nhtsa.gov.

ABS Light May Not Stay Illuminated/FMVSS 121

NHTSA #23V370000 · Service Brakes, Air — Antilock — ABS Warning Light · NHTSA notice

Reported May 25, 2023 · Navistar, Inc.

Potentially affected: 59,684 vehicles

Repair completion: 98.09% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 23515 · Owners notified July 18, 2023

Defect description

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."

Safety consequence

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.

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Obstructed Back-Up Lights/ FMVSS 108

NHTSA #23V353000 · Exterior Lighting — Back Up Lights · NHTSA notice

Reported May 18, 2023 · Navistar, Inc.

Potentially affected: 32,880 vehicles

Repair completion: 34.18% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 23514 · Owners notified May 6, 2024

Defect description

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."

Safety consequence

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

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

ECM Software May Cause Sudden Stop While Driving

NHTSA #23V220000 · Engine and Engine Cooling — Engine — Engine Control Module (ECU/ECM) — Software · NHTSA notice

Reported March 30, 2023 · Navistar, Inc.

Potentially affected: 770 vehicles

Repair completion: 86.87% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 23509 · Owners notified May 26, 2023

Defect description

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.

Safety consequence

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

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Connecting Rod May Crack and Cause Engine Failure

NHTSA #22V691000 · Engine · NHTSA notice

Reported September 15, 2022 · Navistar, Inc.

Potentially affected: 7,918 vehicles

Repair completion: 85.54% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 22518 · Owners notified November 14, 2022

Defect description

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.

Safety consequence

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

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Battery Cables Grounded Incorrectly

NHTSA #22V546000 · Electrical System — 12V/24V/48V Battery — Cables · NHTSA notice

Reported July 28, 2022 · Navistar, Inc.

Potentially affected: 8,483 vehicles

Repair completion: 76.2% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 22516 · Owners notified September 26, 2022

Defect description

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.

Safety consequence

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.

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Battery Cable May Become Damaged and Short

NHTSA #22V164000 · Electrical System — 12V/24V/48V Battery — Cables · NHTSA notice

Reported March 17, 2022 · Navistar, Inc.

Potentially affected: 2,804 vehicles

Repair completion: 94.19% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 22507 · Owners notified May 16, 2022

Defect description

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.

Safety consequence

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

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Engine Wrist Pin Bushing May Fail

NHTSA #21V281000 · Engine · NHTSA notice

Reported April 22, 2021 · Navistar, Inc.

Potentially affected: 10,038 vehicles

Repair completion: 99.97% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 21505 · Owners notified June 11, 2021

Defect description

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

Safety consequence

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

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Retainer Not Properly Seated/FMVSS 121

NHTSA #21V227000 · Service Brakes, Air · NHTSA notice

Reported April 1, 2021 · Navistar, Inc.

Potentially affected: 845 vehicles

Repair completion: 87.69% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 21503 · Owners notified May 28, 2021

Defect description

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."

Safety consequence

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

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Air Leak In Spring Brake Chamber

NHTSA #21V226000 · Parking Brake · NHTSA notice

Reported April 1, 2021 · Navistar, Inc.

Potentially affected: 615 vehicles

Repair completion: 99.67% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 21502 · Owners notified May 28, 2021

Defect description

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.

Safety consequence

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

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Flywheel Capscrews Not Tightened Properly

NHTSA #21V112000 · Engine · NHTSA notice

Reported February 24, 2021 · Navistar, Inc.

Potentially affected: 7 vehicles

Owners notified March 29, 2021

Defect description

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.

Safety consequence

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.

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Loss of Electrical Power May Cause Engine Shutdown

NHTSA #21V079000 · Engine · NHTSA notice

Reported February 17, 2021 · Navistar, Inc.

Potentially affected: 27,457 vehicles

Repair completion: 87.39% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Manufacturer campaign 21501 · Owners notified April 16, 2021 · Vehicles built May 18, 2016 – January 12, 2021 (per NHTSA)

Defect description

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.

Safety consequence

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

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Other International LT model years

Check your 2021 International LT VIN

Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your International LT at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.

Check an International VIN