Vehicle report

2025 MACK LR

Compare every MACK LR yearNHTSA and EPA records

Service bulletins

31 bulletins

Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.

CBR-2592-1 202606

Service Bulletin/Repair Instructions

The purpose of this CBR is to provide steps on how to correct a customer complaint of DTC P107B86 accompanied With intermittent loss of throttle.

CBR 2362-3 202604

Service Bulletin/Repair Instructions

CBR - Mack Carrier Nut Adhesive Change.

CBR 2573-1 202604

Service Bulletin/Repair Instructions

CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.

SC S4920 202604

Service Campaign

SC - Trunion Nut Pinch Bolt.

CBR 2712-7 032026

Service Bulletin/Repair Instructions

CBR - No Start Condition After Over the Air Programing.

S4342 022026

Service Campaign

SC - Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.

CBR 2440-3 202601

Service Bulletin/Repair Instructions

CBR - Mack Chassis - Model LR - Linear Assist Cylinder Repair.

CBR 2171-11 202511

Service Bulletin/Repair Instructions

CBR - Mack Temperature Sensor Troubleshooting Guide

CBR 2172-5 082025

Service Bulletin/Repair Instructions

CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job ends in a Critical failure, the vehicle will remain in Safe State.

CBR 2488 072025

Service Bulletin/Repair Instructions

CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data.

CBR 407 072025

Service Bulletin/Repair Instructions

CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded.

CBR 170-8 202505

Service Bulletin/Repair Instructions

Inactive Code P25AE00 Being Generated After A Hard Pull And A Momentary Drop In Engine Oil Pressure (Low Oil Pressure) (Possible Related Codes - SPN4811 , SPN 100 , PID 100)

CBR 2107-21 202505

Service Bulletin/Repair Instructions

Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer

CBR 901-5 202505

Service Bulletin/Repair Instructions

Remote Control Central Door Lock, Programming; Key Fob Cannot Be Programmed Or Does Not Work After Programming - Model Year 2018 And Newer

CBR-561 202503

Service Bulletin/Repair Instructions

If oil dilution is suspected refer to the applicable CBR solution below: ∙ CBR-659􀁡Mack Chassis - Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information - All Emissions, All Model Years

S4342-202502

Service Bulletin/Repair Instructions

Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.

CBR-2016 202412

Service Bulletin/Repair Instructions

Frame lean can be caused by several seemingly isolated possibilities. The two most common are suspension and frame assembly issues.

CBR-997 202411

Service Bulletin/Repair Instructions

Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping. These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual cause is the crankshaft adaptor O-ring.

CBR-2417 202411

Service Bulletin/Repair Instructions

CBR - 11L Engine block compatibility and Backward Conversion Parts Requirements

CBR-2263 202410

Service Bulletin/Repair Instructions

CBR - Mack Chassis - Timing Gear Plate Repair

CBR-731 202409

Service Bulletin/Repair Instructions

CBR: Automated Manual Transmission (AMT) Model D or F (mDrive and I-Shift, AMT-D, AMT-F) - Transmission Oil Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer

CBR-407 202409

Service Bulletin/Repair Instructions

CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.

CBR-471 202409

Service Bulletin/Repair Instructions

CBR: The procedure to eliminate the Mack Chassis "Air Restriction Light On" seen in the cluster is to confirm that the parameter YYT is set to "Enable" with Premium Tech Tool.

CBR-523 202408

Service Bulletin/Repair Instructions

CBR: Overhead Wear Overview - Model Year2018 To Current (Common Rail Fuel System ONLY)

CBR-561 202408

Service Bulletin/Repair Instructions

CBR: 11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions

CBR-2350 202407

Service Bulletin/Repair Instructions

CBR: Telematics Gateway (TGW) Connect Ability Issues

CBR-2383 202406

Service Bulletin/Repair Instructions

CBR - Accelerator Pedal: Inspection Instructions

CBR-2139 202405

Service Bulletin/Repair Instructions

CBR: Vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil. It is possible that the source of the fuel is the rear fuel galley plug in the cylinder head. A new and improved fuel galley plug has been developed to resolve this issue.

CBR-1008 202404

Service Bulletin/Repair Instructions

CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value In VDA And Default Settings Guidelines, ParameterP1AOB; Fault Code P1052-54, Error 40,Or Error 18 Encountered During Clutch Or Tran.

CBR-2013 202404

Service Bulletin/Repair Instructions

CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information.

CBR-2139 202403

Service Bulletin/Repair Instructions

CBR: Vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil. It is possible that the source of the fuel is the rear fuel galley plug in the cylinder head.

Reading this report

Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.