Recall Register

2011 Mack MRU: recalls and complaints

NHTSA lists 10 recall campaigns for the 2011 Mack MRU. The newest campaign is 25V030000. NHTSA received the report on 23 Jan 2025. The NHTSA record gives the component Service Brakes, Air / Antilock. NHTSA has no complaint on file for this model year.

The NHTSA recall file shows no do-not-drive advisory and no park-outside advisory on these campaigns.

This page cannot show if a recall applies to one vehicle. The NHTSA VIN lookup shows the unrepaired recalls of one vehicle.

Remedy of the newest campaign, 25V030000, in the NHTSA record

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.
NHTSA VIN lookup

Complaint information entered into NHTSA’s Office of Defects Investigation vehicle owner's complaint database is used with other data sources to identify safety issues that warrant investigation and to determine if a safety-related defect trend exists.

NHTSA publishes these words. Source: NHTSA Datasets and APIs, section Complaints, read on . Complaint file through . Recall file through .

Since the last update

No tracked figure of this page changed in a data update. What the log tracks

All updates to the register

Recall campaigns

10 campaigns, newest first. 60,547 units in total.

  • 25V030000Service Brakes, Air / Antilock
  • 15V275000Engine and Engine Cooling / Engine
  • 14V208000Exterior Lighting / Turn Signal / Flasher Unit
  • 14V137000Engine and Engine Cooling / Engine
  • 12V096000Electrical System / Alternator/Generator/Regulator
  • 12V067000Suspension / Front
  • 11V374000Steering / Gear Box / Shaft Sector
  • 11V272000Service Brakes, Air / Slack Adjusters / Automatic
  • 11V212000Electrical System
  • 10V404000Service Brakes, Air

  1. 25V030000Received . 142 units.

    Service Brakes, Air / Antilock

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

    Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0474. Owner notification date in the NHTSA record: .

  2. 15V275000Received . 2,124 units.

    Engine and Engine Cooling / Engine

    Defect, in the NHTSA record
    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.
    Consequence, in the NHTSA record
    If engine oil comes into contact with a hot surface, there could be an increased risk of a fire.
    Remedy, in the NHTSA record
    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.

    Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0391. Owner notification date in the NHTSA record: .

  3. 14V208000Received . 44,047 units.

    Exterior Lighting / Turn Signal / Flasher Unit

    Defect, in the NHTSA record
    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.
    Consequence, in the NHTSA record
    A failure of the hazard warning lights could reduce the trucks visibility, increasing the risk of a crash.
    Remedy, in the NHTSA record
    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.

    Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0379. Owner notification date in the NHTSA record: .

  4. 14V137000Received . 1,934 units.

    Engine and Engine Cooling / Engine

    Defect, in the NHTSA record
    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.
    Consequence, in the NHTSA record
    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.
    Remedy, in the NHTSA record
    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.

    Report filed by Mack Trucks, Inc.. Manufacturer campaign number SC0377.

  5. 12V096000Received . 318 units.

    Electrical System / Alternator/Generator/Regulator

    Defect, in the NHTSA record
    Mack is recalling certain model year 2010-2012 leu and model year 2011-2012 mru vehicles, manufactured from may 14, 2009, through october 31, 2011, and built to operate on compressed natural gas. On these vehicles the alternator ground cable runs directly to the starter, which defeats the circuit protection.
    Consequence, in the NHTSA record
    In the event of an electrical short, a vehicle fire may result.
    Remedy, in the NHTSA record
    Mack will notify owners, and dealers will relocate the alternator ground cable to the engine ground stud. This service will be performed free of charge. The recall began on april 19, 2012. Owners may contact mack trucks at 1-800-866-1177.

    Report filed by MACK TRUCKS, INC. Manufacturer campaign number SC0360. Owner notification date in the NHTSA record: .

  6. 12V067000Received . 4,032 units.

    Suspension / Front

    Defect, in the NHTSA record
    Mack is recalling certain model year 2009-2011 mru and model year 2010-2011 leu vehicles, manufactured from january 1, 2009, through september 30, 2010 because the front axle may crack and fracture.
    Consequence, in the NHTSA record
    Complete fractures can cause the driver to lose control of the vehicle, increasing the risk of a crash.
    Remedy, in the NHTSA record
    Mack will notify owners, and replace the axle beams on affected vehicles when sufficient quantities are available. As an interim measure, a mag particle inspection will be provided to mitigate risk and identify vehicles with cracked axle beams. This service will be performed free of charge. The safety recall began march 30, 2012. Owners may contact mack trucks at 1-800-866-1177.

    Report filed by MACK TRUCKS, INC. Manufacturer campaign number SC0362. Owner notification date in the NHTSA record: .

  7. 11V374000Received . 2,294 units.

    Steering / Gear Box / Shaft Sector

    Defect, in the NHTSA record
    Mack trucks is recalling certain model year 2009-2012 mru heavy trucks manufactured from november 26, 2008, through april 26, 2011. The bolts used to mount the steering gear were not tightened to specification. The bolts can loosen which over time may cause the steering gear to disconnect from its mounting bracket.
    Consequence, in the NHTSA record
    A complete loss of steering may occur increasing the risk of a vehicle crash.
    Remedy, in the NHTSA record
    Dealers will replace the bolts, which will be tightened to the correct specification. This service will be performed free of charge. The safety recall began on september 19, 2011. Owners may contact mack trucks at 1-800-866-1177.

    Report filed by MACK TRUCKS, INC. Manufacturer campaign number SC0356. Owner notification date in the NHTSA record: .

  8. 11V272000Received . 1,524 units.

    Service Brakes, Air / Slack Adjusters / Automatic

    Defect, in the NHTSA record
    Mack trucks is recalling certain model year 2011-2012 chu, cxu, gu, leu and mru trucks manufactured from october 15, 2010, through january 31, 2011, and equipped with gunite automatic slack adjusters. Due to an incomplete "knitting" of the iron at the time of casting, inadequate structural integrity of the slack adjuster housing can occur, which could cause the housing to break at the handle under normal operating loads.
    Consequence, in the NHTSA record
    Slack adjusters with this flow notch could crack under normal braking conditions causing loss of braking which could result in a vehicle crash.
    Remedy, in the NHTSA record
    Mack trucks will notify owners and dealers will replace the subject slack adjusters free of charge. The safety recall began on august 24, 2011. Owners may contact mack trucks at 1-800-528-6586.

    Report filed by MACK TRUCKS, INC. Manufacturer campaign number SC0352. Owner notification date in the NHTSA record: .

  9. 11V212000Received . 3,763 units.

    Electrical System

    Defect, in the NHTSA record
    Mack trucks is recalling certain model year 2008-2012 mru and leu heavy trucks manufactured from january 3, 2007, through february 3, 2011. The electrical circuitry in these vehicles may not provide adequate overcurrent protection.
    Consequence, in the NHTSA record
    In the event of an electrical overage, the fuse that should prevent the over current from reaching the mirror switch circuit may fail, such that the mirror switch can overheat. An overheated switch could cause a vehicle fire.
    Remedy, in the NHTSA record
    Dealers will install a relay harness to prevent the mirror switch from overheating. They will also inspect the mirror switch and if signs of overheating are shown, replace that switch. All inspections and repairs will be performed free of charge. The safety recall began on june 30, 2011. Owners may contact mack trucks at 1-800-866-1177.

    Report filed by MACK TRUCKS, INC. Manufacturer campaign number SC0349/SC0350. Owner notification date in the NHTSA record: .

  10. 10V404000Received . 369 units.

    Service Brakes, Air

    Defect, in the NHTSA record
    Mack is recalling certain model year 2008 through 2011 gu and mru model vehicles manufactured with a front tow glad hand option. The actuation and release timing of the vehicles exceeds the limit which fails to conform to the requirements of federal motor vehicle safety standard no. 121, "air brake systems."
    Consequence, in the NHTSA record
    If the brakes do not perform as they should, a vehicle crash could occur.
    Remedy, in the NHTSA record
    Mack will notify owners and repair the vehicle free of charge. The safety recall began on february 1, 2011. Owners may contact mack at 1-877-800-4945.

    Report filed by MACK TRUCKS, INC. Manufacturer campaign number SC0345. Owner notification date in the NHTSA record: .

The campaign number opens the NHTSA record. Each quotation is the text of the NHTSA recall file.

Recall campaign: One recall in the NHTSA recall file, with one campaign number. A campaign can name many makes, models and model years.

Units: The number of vehicles or products that a recall can include. The manufacturer or the firm reports the number to the agency.

Complaints by component

The NHTSA complaint file has no complaint for this model year.

Investigations

The NHTSA investigation file has no investigation that names this model year.

Investigation: A study of a possible safety defect by the NHTSA Office of Defects Investigation. An investigation with no closing date in the NHTSA file is open.

Other model years

The number under each year is the number of recall campaigns.

  1. 20085
  2. 20097
  3. 20107
  4. 201110
  5. 20129
  6. 20136
  7. 20147
  8. 20153
  9. 20162
  10. 20171
  11. 20181

A year without a link has fewer than 2 campaigns and fewer than 25 complaints. It has no page.

Official channels

Cite this page

Recall Register. 2011 Mack MRU: recalls and complaints. https://recallregister.com/vehicle/mack/mru/2011/. Source: NHTSA Office of Defects Investigation, recall, complaint and investigation files. Data through .

Sources

Source
NHTSA Office of Defects Investigation
Licence
US government work, public domain
Recall file through
29 Sep 2026
Complaint file through
29 Mar 2018
First complaint in the file
1 Jan 1995
Manufacturer in the recall file
Mack Trucks, Inc.

The NHTSA record is the authority. A complaint count is the number of different complaint numbers for the make, the model and the model year. How the register is made. Report an error.

Questions

How many units are in the recall campaigns for the 2011 Mack MRU?
60,547 units in 10 campaigns. A campaign can name other models and model years, and its units include them.
How many recall campaigns does the Mack MRU have for all model years?
NHTSA lists 18 recall campaigns for the Mack MRU, model years 2008 to 2018. 10 of them name the 2011 model year.
Is an NHTSA investigation of the 2011 Mack MRU open?
The NHTSA investigation file has no investigation that names this model year.