WenmarOpen by Wenmar Pro

Service bulletins for the 2026 Mack Anthem

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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
CBR 2456-6 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM. Infotainment Update for Missing Apps, Navigation, and Apple/Android CarPlay Issues
CBR 2568-3 2026042026-05-05. Service bulletin. ELECTRICAL SYSTEM. CBR - Communication Lost With Ultracapacitor Message With Associated CCIOM DTC U100687 and a Startability Issue.
CBR 2562-15 2026042026-05-05. Service bulletin. ELECTRICAL SYSTEM. CBR - Electric Pneumatic Module (EPM) Fault
CBR 2570-1 0320262026-04-02. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. CBR - EBS - Electro-Pneumatic Module - Signal Compare Failure DTC C109562 - AN (4) - PR.
CBR 2565-1 0320262026-04-02. Service bulletin. ELECTRICAL SYSTEM. CBR - Trailer, 12Volt Right/Left Direction Indicator Circuit Warning - AN (4) - PR.
CBR 2712-7 0320262026-04-02. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. CBR - No Start Condition After Over the Air Programing.
CBR 2514 0220262026-03-03. Service bulletin. ELECTRICAL SYSTEM. CBR - This procedure provides a temporary corrective action for the “Lost Communication to Alternator” message and Vehicle Master Control Unit (VMCU) DTC C103508 caused by a software issue.
SC S4751 2026012026-02-03. Service campaign. ELECTRICAL SYSTEM. CBR - Driver Environment Control Module Replacement.
CBR 2545-1 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - U114688 VMCU Communication Fault - AN (4) - PR (4).
CBR 2516-6 2026012026-02-03. Service bulletin. VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. CBR - CMS Black Screen Troubleshooting - PR (4) - AN (4).
CBR 2502-2 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Mack Chassis - Battery Sensor Diagnostic and Calibration Procedure - PR (4) - AN (4).
CBR 2496-9 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - The purpose of this CBR is outline the interim software solution for PR(4) and AN(4).
CBR 2443-3 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. CBR - Trailer Tandem Adjustment Procedure - PR (4) - AN (4).
CBR 2542 2025122026-01-06. Service bulletin. ELECTRICAL SYSTEM. This document provides mandatory interim parameter settings to ensure proper vehicle operation.
CBR 2526 2025122026-01-05. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is to address driver complaint of parking heater inoperative.
CBR 2526-4 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE. CBR - Parking Heater Inoperative - PR(4) - AN (4).
CBR 2514-2 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Lost Communication to Alternator Message - DTC C103508.
CBR 2467-5 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Service Required Message PR(4), AN(4).
CBR 2171-11 2025112025-12-03. Service bulletin. ENGINE; ELECTRICAL SYSTEM. CBR - Mack Temperature Sensor Troubleshooting Guide
CBR 2480-72025-11-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Resolution Process for Locked Control Unit(s)
CBR 2516-3 1020252025-11-03. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY/WIPER; VEHICLE SPEED CONTROL. CBR - CMS Black Screen Troubleshooting.
CBR 2514-1 1020252025-11-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Lost Communication to Alternator Message.
CBR 2502 0920252025-10-01. Service bulletin. ELECTRICAL SYSTEM. This CBR solution provides guidelines for ensuring the correct position of battery sensor modules and battery sensor harnesses on the Mack PR (4) and AN (4) chassis, as well as the Battery Sensor Diagnostic and Calibration Procedure.
CBR 2497 0920252025-10-01. Service bulletin. ELECTRICAL SYSTEM. Electronic control units on the VN(4), PR (4) and AN (4) contain information that is critical for vehicle functionality, maintaining vehicle life data, and maintaining vehicle compliance. Because of this, swapping ECUs from truck to truck even for diagnostic purposes may cause functional or compliance complications that may or may not be apparent.
CBR 2172-5 0820252025-09-02. Service bulletin. ELECTRICAL SYSTEM. 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.

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