2012 International Prostar Technical Service Bulletins

496 technical service bulletins (TSBs) are on record for the 2012 International Prostar. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11035951Jul 24, 2026Electrical system. The new clusters in the post-2007 models store the mileage in memory. When replacing the cluster, follow these instructions to program the current vehicle mileage into the memory of the new cluster.
• 11033291May 29, 2026Electrical system. This document will guide the user through the necessary steps to install the Pressure Transducer (PT) Switch Conversion Kit onto model year 2012 thru 2016 ProStar® and LoneStar®(Built prior to January 20,2015). This conversion is required to be performed during a A/C system failure in which the refrigerant system is opened.
• 11032505Apr 25, 2026Electrical system, Engine. This document enables technicians to: 1. Accurately identify second generation MaxxForce medium duty engine control systems. 2. Understand the programming intricacies related to these systems. 3. Autonomously execute programming tasks without needing technical support.
• 11028361Feb 5, 2026Engine. New CARB Idle Reduction Change Request
• 11029461Feb 3, 2026Electrical system. This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files. It allows users to quickly load files either manually or directly from the Diamond Logic Builder Vehicles folder using VIN-based selection. As files are added or removed, the comparison runs automatically with no manual action required.
• 11028362Jan 26, 2026Engine. 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 greenhouse gas (GHG) regulations.
• 11028356Jan 16, 2026Engine. This document will guide the user through Mass Air Flow (MAF) calibration procedure
• 11028359Jan 2, 2026Engine. Engine replacements for all International engines will need to follow this procedure.
• 11027312Dec 19, 2025Electrical system. This document provides: Steps to take when switch pack programming fails, or when switch pack disappears after body control module update Sample scenarios Additional information to assist readers in understanding DLB switch pack programming
• 11027310Dec 19, 2025Body and structure. This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and windshields using an ultrasonic sound detector.
• 11027309Dec 18, 2025Body and structure. In some geographic areas, ambient temperatures reaching below 40°F (4°C), including high levels of humidity, an operator may experience engine stalling, low performance, and/or poor aftertreatment performance. This is caused by condensation accumulating and freezing within the Charge Air Cooler (CAC); affecting air flow into the engine.
• 11027306Dec 18, 2025Fuel system. This document describes the process for utilizing the CPA High Pressure Fuel Pump (HPFP) Test
• 11026148Dec 5, 2025Transmission and drivetrain. This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes. (Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.)
• 11026190Nov 6, 2025Body and structure. In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of humidity, an operator may experience engine stalling, low performance, and or poor aftertreatment performance. This is caused by condensation accumulating and freezing within the Charge Air Cooler (CAC); affecting air flow into the engine.
• 11022447Aug 28, 2025Other or unknown. Title: Service Portal iKNow Feedback Case Types Applies To: All
• 11022310Aug 25, 2025Transmission and drivetrain. Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
• 11021609Jul 18, 2025Other or unknown. Title: A/C Refrigerant and Oil Capacities Applies To: All current models
• 11021606Jul 17, 2025Other or unknown. Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
• 11021607Jul 7, 2025Other or unknown. Title: Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or Clean Idle Sticker, Clean Truck Check
• 11019106Jun 4, 2025Steering. Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
• 11019103May 20, 2025Other or unknown. Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
• 11019101May 9, 2025Suspension. This document reminds technicians of the critical relationship between the truck's suspension and the driveline operating angles. The information applies to diesel, gas, and electric vehicles.
• 11017821Apr 24, 2025Other or unknown. Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or Clean Idle Sticker, Clean Truck Check
• 11010428Oct 8, 2024Suspension. This article addresses chassis lean conditions on all chassis. This does not include any diagnostics for body leans such as a cab lean. Keep in mind that a chassis lean may cause or accentuate a cab lean. Filling out the printable form and using the notes in blue will help you to determine the source of the lean and identify the action and parts required to correct the lean.
• 10253979Apr 29, 2024Brakes. This document is to guide users to eliminate brake pedal rattle noise.
• 10253970Apr 24, 2024Engine cooling. This document details the procedure that must be followed to ensure proper alternator troubleshooting.
• 10253960Apr 24, 2024Electrical system. This document covers battery diagnostics, maintenance and storage requirement.
• 10251414Feb 21, 2024Engine cooling, Electrical system. Starter Diagnostics and warranty claim procedure; all engines EXCLUDING Cummins ISB engine with Allison transmission or PSI engine.
• 10251409Feb 21, 2024Suspension, Steering. Suggested alignment target values when performing a vehicle axle alignment.
• 10246231Nov 21, 2023Electrical system. J1939 Data Link Source Address Information
• 10244926Oct 18, 2023Engine cooling. Rebuilding Cylinder Heads on Certain MaxxForce 11/13, N13, and A26 engines; 2010 to present.
• 10243595Sep 29, 2023Steering, Suspension. Diagnosis of chassis wander complaints.
• 10243596Sep 26, 2023Brakes. General Wheel Speed Sensor Troubleshooting
• 10243610Sep 7, 2023Engine cooling. How to request a horsepower quote; all International and Cummins engines
• 10241555Aug 14, 2023Electrical system. J1939 Data Link Source Address Information
• 10241554Aug 14, 2023Electrical system. J1939 Data Link Troubleshooting
• 10240193Jul 19, 2023Engine cooling. Snap-On torque wrench requirement for all big bore engine connecting rod bolts; A26, MaxxForce 13, N13 engines
• 10237468May 18, 2023Brakes, Engine cooling. New air compressor incorporates an oil feed dowel O-ring. Only models equipped with 2010 and newer MaxxForce 11/13 engines, all N13, and A26 engines
• 10236042Apr 11, 2023Engine cooling, Brakes. New Air compressor Incorporates an oil feed dowel O-ring; only models built with MaxxForce 11/13, N13, or A26 Engines
• 10234021Mar 15, 2023Engine cooling. Rebuilding cylinder heads on certain EPA 2010 MaxxForce 11/13, N13, and A26 Engines
• 10234000Mar 15, 2023Electrical system, Engine cooling. Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles equipped with PSI engines or Cummins ISB engine with Allison transmissions
• 10232616Feb 16, 2023Engine cooling. Rebuilding Cylinder Heads on Certain International MaxxForce 11/13 engines and all International N13 and A26 engines
• 10227455Nov 16, 2022Electrical system. J1939 Data link source address information
• 10227461Nov 3, 2022Engine cooling. Turbocharger oil supply tube retrofit; only models with 2010 emissions MaxxForce 11 and 13 engines and N13 engines
• 10222490Sep 29, 2022Engine cooling. Pico Scope CCOS (Crankcase Separator Test)
• 10219330Aug 23, 2022Engine cooling. PicoScope Test One Channel RCT
• 10219328Aug 23, 2022Electrical system. PicoScope Wheel Speed Sensor Test
• 10219325Aug 23, 2022Electrical system. PicoScope Test Resistance and Ohmmeter
• 10219319Aug 23, 2022Electrical system. PicoScope Test for Datalink (CAN) Health Shorts & opens
• 10219314Aug 23, 2022Electrical system. PicoScope Test - Battery Loss of Charge - Parasitic Draw Test

← All problems reported for the 2012 International Prostar