Service bulletins for the 2026 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.
8 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| S5075 202609 | 2026-10-02. Service campaign. SERVICE BRAKES. Fleet Improvement Campaign - Work Brake Valve Replacement |
|---|---|
| CBR-2592-1 202606 | 2026-06-29. Service bulletin. ENGINE. 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. |
| SC S4920 202604 | 2026-05-05. Service campaign. SUSPENSION. SC - Trunion Nut Pinch Bolt. |
| CBR 2573-1 202604 | 2026-05-05. Service bulletin. POWER TRAIN. CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers. |
| CBR 2362-3 202604 | 2026-05-04. Service bulletin. POWER TRAIN. CBR - Mack Carrier Nut Adhesive Change. |
| CBR 2712-7 032026 | 2026-04-02. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. CBR - No Start Condition After Over the Air Programing. |
| CBR 2171-11 202511 | 2025-12-03. Service bulletin. ENGINE; ELECTRICAL SYSTEM. CBR - Mack Temperature Sensor Troubleshooting Guide |
| CBR 2172-5 082025 | 2025-09-02. 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.