How many recalls does the 2014 Mack MRU have?

NHTSA lists 7 recall campaigns for the 2014 Mack MRU as of October 16, 2026. Each includes the defect description, safety consequence, and the remedy Mack will perform. New recalls can be issued at any time; this page is refreshed from NHTSA daily.

How do I tell if my 2014 Mack MRU is affected by a recall?

Enter your 17-character VIN — stamped at the base of the windshield on the driver side and on the door jamb sticker — at nhtsa.gov/recalls. NHTSA's VIN lookup shows whether your specific vehicle has an unrepaired recall; the list on this page covers every campaign for the 2014 Mack MRU.

Are recall repairs on a 2014 Mack MRU free?

Usually. Federal law requires Mack to remedy recalls on the 2014 MRU free of charge at an authorized Mack dealer, regardless of how many owners the vehicle has had or how many miles are on the odometer — unless it was first sold more than 15 years before the recall was issued (5 years for tires).

Does a recall on the 2014 Mack MRU affect resale value?

An open recall can reduce resale value; a recall that has been repaired (documented in the vehicle history report) generally does not. Before you buy or sell a used 2014 Mack MRU, check the VIN at nhtsa.gov/recalls to confirm every recall has been remedied.

How many owner complaints are on file for the 2014 Mack MRU?

No owner complaints have been filed with NHTSA on the 2014 Mack MRU.

NHTSA vehicle safety data

2014 Mack MRU Recalls, Ratings & Complaints

The 2014 Mack MRU has 7 NHTSA recall campaigns and 0 owner complaints on file as of October 16, 2026. Recall repairs are usually free at an authorized Mack dealer.

NHTSA recall and complaint data for the 2014 Mack MRU. Recall data is refreshed daily from NHTSA.

Pre-purchase inspection checklist → Reliability & 5-year cost forecast →

SERVICE BRAKES, AIR:ANTILOCK

NHTSA #25V030000

Reported January 23, 2025 · Mack Trucks, Inc.

Potentially affected: 142 vehicles

Defect description

Mack Trucks, Inc. (Mack) is recalling certain 2010-2018 MRU and 2019-2025 Terrapro towing vehicles. The vehicles are missing the anti-lock brake (ABS) warning light and circuitry that controls the anti-lock brake function for an attached trailer. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."

Safety consequence

Driving without a functioning anti-lock brake system may result in the trailer not braking as intended, increasing the risk of a crash.

Manufacturer remedy

Dealers will add an ABS warning light and circuitry, free of charge. Owner notification letters were mailed April 28, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0474.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to nhtsa.gov.

ENGINE AND ENGINE COOLING:ENGINE

NHTSA #15V275000

Reported May 11, 2015 · Mack Trucks, Inc.

Potentially affected: 2,124 vehicles

Defect description

Mack Trucks, Inc. (Mack) is recalling certain model year 2011-2016 Mack MRU and LEU trucks manufactured June 25, 2010, to April 30, 2015, and 2015-2016 LR6 trucks manufactured from December 18, 2014 through March 6, 2015. Excessive engine crankcase pressures may cause the 90-degree elbow of the vent tube assembly to detach from the crankcase ventilation breather, possibly allowing engine oil to come into contact with hot surfaces.

Safety consequence

If engine oil comes into contact with a hot surface, there could be an increased risk of a fire.

Manufacturer remedy

Cummins will notify owners on behalf of Mack, and Cummins service centers will administer the repairs which include securing the ends of the 90-degree elbow and reprogramming the electronic control module (ECM) with software that can adjust the engine output under misfire conditions to limit crankcase pressures. These repairs will be performed free of charge. The recall began on June 12, 2015. Owners may contact Mack customer service at 1-800-528-6586 or Cummins Inc. at 1-800-343-7357. Mack's number for this recall is SC0391.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

EXTERIOR LIGHTING:TURN SIGNAL:FLASHER UNIT

NHTSA #14V208000

Reported April 18, 2014 · Mack Trucks, Inc.

Potentially affected: 44,047 vehicles

Defect description

Mack Trucks Inc. (Mack) is recalling certain model year 2010-2014 CHU, CXU, and MRU, 2007 CT and CV, 2008-2014 GU, and 2011-2014 LEU, and TD trucks manufactured February 28, 2006, through November 8, 2013, and equipped Hamsar Electronic Flasher. The hazard warning lights may fail.

Safety consequence

A failure of the hazard warning lights could reduce the trucks visibility, increasing the risk of a crash.

Manufacturer remedy

Mack will notify owners, and dealers will replace the electronic flasher unit, free of charge. The recall will begin by mid-June 2014. Interim letters went out to owners on June 23, 2014. The recall began on July 25, 2014. Owners may contact Mack customer service at 1-866-298-6586. Mack's number for this recall is SC0379.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

ENGINE AND ENGINE COOLING:ENGINE

NHTSA #14V137000

Reported March 24, 2014 · Mack Trucks, Inc.

Potentially affected: 1,934 vehicles

Defect description

Mack Trucks Inc. (Mack) is recalling certain model year 2014-2015 CXU, 2010-2015 LEU, and 2011-2015 MRU vehicles manufactured with certain Cummins Westport Model ISL G and ISX12 G engines. Condensation in the intake manifold may freeze during cold weather conditions and interfere with the proper operation of the intake manifold pressure sensor.

Safety consequence

The improper operation of the sensor could induce elevated exhaust temperatures or flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury to a person near the exhaust pipe.

Manufacturer remedy

Cummins and Cummins Westport will notify owners, and authorized Cummins service facilities will upload a new ECM calibration, free of charge. The recall began on March 12, 2014. Customers may contact Mack at 1-336-393-2000 or Cummins Inc. at 1-800-343-7357. Mack's number for this recall is SC0377.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

SEAT BELTS

NHTSA #13V619000

Reported November 29, 2013 · Mack Trucks, Inc.

Potentially affected: 39 vehicles

Defect description

Mack Trucks, Inc. (Mack) is recalling certain model year 2014 CXU and MRU trucks manufactured August 12, 2013, through October 9, 2013 and equipped with IMMI-brand L9 seat belt buckles. When the button is pressed to release the seat belt, the latch plate can become partially engaged with the buckle, making the seat belt difficult to unlatch. Thus, these vehicles fail to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 209, "Seat Belt Assemblies."

Safety consequence

If the latch plate remains partially engaged after the button is pressed, egress from the vehicle could be hindered which would increase the risk of injury in the event of an emergency.

Manufacturer remedy

Mack will notify owners, and dealers will inspect the seat belt buckle, and if necessary, replace the seat belt buckles, free of charge. The recall began on January 30, 2014. Owners may contact Mack Trucks at 1-336-393-2000. This is Mack Recall No. SC0373.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

POWER TRAIN:AXLE HUBS

NHTSA #13V492000

Reported October 17, 2013 · Mack Trucks, Inc.

Potentially affected: 1,155 vehicles

Defect description

Mack Trucks is recalling certain model year 2013-2014 CHU, CXU, GU, LEU, and MRU vehicles manufactured with pro-torque axle spindle nuts from August 28, 2012, through August 16, 2013. The pro-torque nut may not have been installed correctly, which may result in a loosening of the nut.

Safety consequence

If the nut comes loose, the hub assembly may separate from the vehicle, increasing the risk of a crash.

Manufacturer remedy

Mack Trucks will notify owners, and dealers will inspect and repair the vehicles, as necessary, free of charge. The recall began on November 12, 2013. Mack's recall number is SC0371. Owners may contact Mack Trucks at 1-336-393-2000.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

SERVICE BRAKES

NHTSA #13V195000

Reported May 13, 2013 · Mack Trucks, Inc.

Potentially affected: 5,203 vehicles

Defect description

Mack Trucks, Inc. is recalling certain model year 2013-2014 CHU, CXU, GU, MRU, and LEU trucks manufactured July 16, 2012, through march 18, 2013 and equipped with drum brakes. The clevis pin for the brake slack adjuster may be missing a cotter pin. If the cotter pin is not installed, the clevis pin may loosen and fall out causing a loss of brake function on the affected wheel.

Safety consequence

A loss of brake function at one wheel will lead to increased stopping distances and pulling to the left or right when braking, which may increase the risk of a crash.

Manufacturer remedy

Mack Trucks, Inc. will notify owners, and dealers will inspect the brake slack adjusters and install the brake hardware, as necessary, free of charge. An interim was mailed to owners on June 20, 2013. A second notice was mailed to owners on September 30, 2013. Owners may contact Mack Trucks at 1-800-528-6586. Mack Trucks' recall campaign number is SC0370.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Other Mack MRU model years

Check your 2014 Mack MRU VIN

Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Mack MRU at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.

Check a Mack VIN