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Service bulletins for the 2024 Mack LR

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

80 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
CBR-471 2024092024-10-03. Service bulletin. ELECTRICAL SYSTEM. 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-407 2024092024-10-03. Service bulletin. SERVICE BRAKES. CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.
CBR-2391 2024082024-09-04. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. CBR: Diagnostic Trouble Code (DTC) U010187- Lost Communication With TECU
CBR-561 2024082024-09-04. Service bulletin. ENGINE. CBR: 11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions
CBR-523 2024082024-09-04. Service bulletin. ENGINE. CBR: Overhead Wear Overview - Model Year2018 To Current (Common Rail Fuel System ONLY)
S0310 2024082024-09-04. Service campaign. ELECTRICAL SYSTEM. Service Campaign: Mack trucks has determined that certain AN, GR, PI, TE, and LR model trucks built with TGW3 have stopped communicating after production.
CBR-2350 2024072024-08-01. Service bulletin. ELECTRICAL SYSTEM. CBR: Telematics Gateway (TGW) Connect Ability Issues
CBR-2383 2024062024-07-03. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL. CBR - Accelerator Pedal: Inspection Instructions
CBR-2334 2024062024-07-02. Service bulletin. SERVICE BRAKES. CBR - Brake Caliper Concerns And Premature Brake Pad Wear - Model Year 2023 - 2024
CBR-2139 2024052024-06-04. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. 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-2258 2024042024-05-01. Service bulletin. POWER TRAIN. CBR: Diagnostic Trouble Code (DTC) P107471 -AMT-F
CBR-2013 2024042024-05-01. Service bulletin. ENGINE AND ENGINE COOLING. CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information.
CBR-1008 2024042024-05-01. Service bulletin. POWER TRAIN. 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.
S3954 2024042024-05-01. Service bulletin. ENGINE AND ENGINE COOLING. Fleet Improvement Campaign: Tunnel Radiator Replacement
S3936 2014042024-05-01. Service bulletin. ELECTRICAL SYSTEM. Service Campaign: OTA Premature Oil Service Pop-up
CBR-2139 2024032024-04-02. Service bulletin. ENGINE AND ENGINE COOLING. 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.
S3857 2024022024-03-06. Service bulletin. STEERING; SUSPENSION. Service Campaign - MMD Suspension Bracket Torque.
CBR-2350 2024022024-03-05. Service bulletin. ELECTRICAL SYSTEM. CBR -Telematics Gateway (TGW) Connect Ability Issues
CBR-2347 2024022024-03-05. Service bulletin. ELECTRICAL SYSTEM. CBR - Active "Set Park Brake" Message On Drivers Information Display (DID).
CBR-202 2024022024-03-05. Service bulletin. POWER TRAIN. CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
CBR-2014 2024022024-03-05. Service bulletin. SUSPENSION. CBR - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built 2016w01 And Newer.
S3815 2024012024-02-02. Service bulletin. STEERING. Service Campaign: LR Power Steering Assist Cylinder Castle Nut Torque
CBR-2333 2024012024-02-02. Service bulletin. ELECTRICAL SYSTEM. CBR: TGW Will Not Connect After SIM Card Replacement
CBR-2286 2024012024-02-02. Service bulletin. ENGINE AND ENGINE COOLING. CBR: Diagnostic Trouble Code (DTC) P113600 NOx Sensor 1/2 Correlation Calibration Error Bank 1 - Model Year 2024
CBR-2326 2023122024-01-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. CBR: The purpose of this solution is to give information on Engine Control Module (EMS) Software content. This document lists issues or problems (DTCs, Fault Codes) mitigated or resolved in specific EMS software.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.