AI Damage2025 Mack LR: common problems
The maker issued 31 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 31
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 0 | 0 | 12 |
| Electrical system | 0 | 0 | 9 |
| Fuel/propulsion system | 0 | 0 | 4 |
| Powertrain | 0 | 0 | 4 |
| Engine and cooling | 0 | 0 | 2 |
| Service brakes | 0 | 0 | 2 |
| Suspension | 0 | 0 | 2 |
| Steering | 0 | 0 | 1 |
| Vehicle speed control | 0 | 0 | 1 |
| Other | 0 | 0 | 2 |
Comparison
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- The purpose of this CBR is to provide steps on how to correct a customer complaint of DTC P107B86…
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 - Trunion Nut Pinch Bolt
- CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers
- CBR - Mack Carrier Nut Adhesive Change
- CBR - No Start Condition After Over the Air Programing
- SC - Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure…
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 - Mack Chassis - Model LR - Linear Assist Cylinder Repair
- CBR - Mack Temperature Sensor Troubleshooting Guide
- CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job…
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 - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded
- CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office…
CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data.
- Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
NHTSA lists 31 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2025 Mack LR?
There are no owner complaints in the NHTSA data for this year; the data comes from 31 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2025 Mack LR?
NHTSA lists 31 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2025 Mack LR from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2025 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.