No complaints are listed for the 2024 Mack LR. NHTSA's API and bulk file list none in this build.
Data build 2026-10-08.
NHTSA lists this vehicle as MACK LR.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
6 recalls.
Date: 2024-03-27. Systems: ELECTRICAL SYSTEM.
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2024-2025 LR natural gas vehicles. The methane detector may be inoperative due to a missing fuse.
Consequence: An inoperative methane detector can fail to detect a gas leak, increasing the risk of a fire or injury.
Remedy: Dealers will install a fuse, free of charge. Owner notification letters were mailed April 10, 2024. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0461.
Do not drive: No. Park outside: No.
Date: 2023-11-22. Systems: VEHICLE SPEED CONTROL.
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2023-2024 GR, AN, LR, and Terrapro vehicles. The engine may not return to idle within 2 seconds if the accelerator pedal position sensor becomes disconnected. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 124, "Accelerator Control Systems."
Consequence: An engine that does not return to idle quickly enough can cause a loss of vehicle control, increasing the risk of a crash.
Remedy: Mack will replace the throttle pedal and update the vehicle software, free of charge. Owner letters were mailed February 27, 2024. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0455.
Do not drive: No. Park outside: No.
Date: 2023-10-24. Systems: STEERING.
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2024 LR vehicles. The fasteners that connect the power steering assist cylinder to steering arm may be loose or missing.
Consequence: The power steering assist cylinder may separate from the steering arm, causing a loss of vehicle control and increasing the risk of a crash.
Remedy: Owners are advised not to drive their vehicles until the repair has been performed. Dealers will inspect and tighten the steering gear fasteners and install a new cotter pin, free of charge. Owner notification letters are expected to be mailed December 15, 2023. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0451.
Do not drive: Yes. Park outside: No.
Date: 2023-07-27. Systems: STRUCTURE.
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2024 LR garbage trucks. The reinforcing floor welds may be missing from around the passenger seat pedestal, reducing floor strength.
Consequence: The pedestal may buckle during a crash, preventing the passenger seat from properly restraining a passenger.
Remedy: Dealers will inspect and add welds as necessary, replace the missing floor welds, free of charge. Owner notification letters were mailed September 12, 2023. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0446.
Do not drive: No. Park outside: No.
Date: 2023-07-03. Systems: VISIBILITY.
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2023-2024 LR garbage trucks. The wiper arm retention nuts may be loose, stripping, and causing the windshield wipers to fail.
Consequence: Inoperative windshield wipers can reduce visibility, increasing the risk of a crash.
Remedy: Dealers will inspect, tighten the retention nuts, and replace the windshield wiper arms as necessary, free of charge. Owner notification letters were mailed August 22, 2023. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0445.
Do not drive: No. Park outside: No.
Date: 2023-05-02. Systems: ELECTRICAL SYSTEM.
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2024 LR electric garbage trucks, equipped with electric horns. The circuit connecting the horn button to the horn is missing, making the horn inoperative.
Consequence: A vehicle with an inoperative horn cannot alert other drivers, increasing the risk of a crash.
Remedy: Dealers will add the necessary circuits to connect the horn button to the horn, free of charge. Owner notification letters were mailed June 20, 2023. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC443.
Do not drive: No. Park outside: No.
Manufacturer communications
80 manufacturer communications.
Communications by system| System | Count |
|---|
| ELECTRICAL SYSTEM | 26 |
|---|
| ENGINE AND ENGINE COOLING | 17 |
|---|
| POWER TRAIN | 17 |
|---|
| ENGINE | 13 |
|---|
| SUSPENSION | 6 |
|---|
| FUEL/PROPULSION SYSTEM | 5 |
|---|
| SERVICE BRAKES | 4 |
|---|
| STEERING | 4 |
|---|
11034135
Date: 2026-06-22. Type: Service Bulletin/Repair Instructions. Systems: 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.
11032086
Date: 2026-04-09. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
CBR - Mack Carrier Nut Adhesive Change.
11032092
Date: 2026-04-09. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
11032096
Date: 2026-04-02. Type: Service Campaign. Systems: SUSPENSION.
SC - Trunion Nut Pinch Bolt.
11030579
Date: 2026-03-19. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, UNKNOWN OR OTHER.
CBR - No Start Condition After Over the Air Programing.
11029453
Date: 2026-02-01. Type: Service Campaign. Systems: FUEL/PROPULSION SYSTEM.
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.
11028042
Date: 2026-01-09. Type: Service Bulletin/Repair Instructions. Systems: STEERING.
CBR - Mack Chassis - Model LR - Linear Assist Cylinder Repair.
11028032
Date: 2026-01-07. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
CBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT APPLY TO AN(4) and PR(4)).
11026025
Date: 2025-11-22. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, ENGINE.
CBR - Mack Temperature Sensor Troubleshooting Guide
11022289
Date: 2025-08-22. Type: Service Bulletin/Repair Instructions. Systems: 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.