The worst 2021 International RH problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 9
Electrical system: software
- What is wrong
- 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.
Recall number 24V818000 · Recall details
Service brakes, air: antilock: ABS warning light
- What is wrong
- 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.
Recall number 23V370000 · Recall details
Exterior lighting: back up lights
- What is wrong
- 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.
Recall number 23V353000 · Recall details
Engine and engine cooling: engine: engine control module (ecu/ECM): software
- What is wrong
- 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.
Recall number 23V220000 · Recall details
Electrical system: body control module/bcm
- What is wrong
- Navistar, Inc. (Navistar) is recalling certain 2018-2021 International HV, 2019-2021 International RH, 2019-2022 International MV, and 2022 International HX vehicles. A software error in the Body Control Module (BCM) may allow the vehicle to overcome the park brake during power-take-off (PTO) operation.
- Risk
- A parking brake that does not hold can allow the vehicle to move unexpectedly and increase the risk of a crash or injury.
- Remedy
- Dealers will update the BCM software, free of charge. Owner notification letters are expected to be mailed April 24, 2023. Owners may contact Navistar's customer service at 1‑800‑448‑7825. Navistar's number for this recall is 23503.
Recall number 23V119000 · Recall details
Engine
- What is wrong
- 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.
Recall number 22V691000 · Recall details
Engine
- What is wrong
- 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.
Recall number 21V281000 · Recall details
Parking brake
- What is wrong
- 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.
Recall number 21V226000 · Recall details
Service brakes, air
- What is wrong
- 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.
Recall number 21V227000 · Recall details
Technical service bulletins for the 2021 International RH 148
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 article will provide the calibration revision history for A26B EPA 2021 engines
- This document will guide the user through the parts and information related to A26B resonator removal and...
- 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 will guide the user through parts information and installation instructions for the IMP...
- This document provides guidance for assessing the feasibility of implementing a customer-requested change...
- This document enables technicians to: 1. Accurately identify International® A26A engine control systems
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Questions about the 2021 International RH
Is the 2021 International RH reliable?
Owners have filed 0 complaints about the 2021 International RH.
What is the most common problem with the 2021 International RH?
There are not enough complaints to tell.
How many recalls does the 2021 International RH have?
9 recalls, covering electrical system, service brakes, air and exterior lighting.
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