Mack Mru recalls
Every NHTSA recall campaign filed since 2000 that names the Mack Mru, newest first. Last verified Jul 30, 2026.
Units are totals reported across campaigns mentioning this model — NHTSA does not always break unit counts down by model.
Affected components
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →All campaigns
- Jan 23, 2025Crash risk2010–2018 Mack Mru, 2019–2025 Mack Terrapro (te) — Service Brakes, Air
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."
25V030000 · 142 units · Mack Trucks, Inc.
- Dec 9, 2021Crash risk2008–2010 Mack Mru, 2019–2021 Mack TE, 2011–2019 Mack Terrapro (mru) and 1 other model — Parking Brake
Mack Trucks, Inc. (Mack) is recalling certain 2008-2019 TerraPro (MRU) and 2019-2022 TerraPro (TE) vehicles. A brake control valve air leak into the attached exhaust hose can create excessive back pressure, causing the parking brake to release unexpectedly.
21V953000 · 21K units · Mack Trucks, Inc.
- May 11, 2015Fire risk2011–2016 Mack Leu, 2015–2016 Mack LR6, 2011–2016 Mack Mru — Engine and Engine Cooling
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.
15V275000 · 2K units · Mack Trucks, Inc.
- Apr 18, 2014Crash risk2010–2014 Mack Chu, 2007 Mack CT, 2007 Mack CV and 8 other models — Exterior Lighting
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.
14V208000 · 44K units · Mack Trucks, Inc.
- Mar 24, 2014Fire risk2010–2015 Mack Leu, 2011–2015 Mack Mru, 2014–2015 Mack Pinnacle (cxu) — Engine and Engine Cooling
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.
14V137000 · 2K units · Mack Trucks, Inc.
- Nov 29, 2013Crash risk2014 Mack Mru, 2014 Mack Pinnacle (cxu) — Seat Belts
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."
13V619000 · 39 units · Mack Trucks, Inc.
- Oct 17, 2013Crash risk2013–2014 Mack Chu, 2013–2014 Mack Granite (gu), 2013–2014 Mack Leu and 2 other models — Power Train
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.
13V492000 · 1K units · Mack Trucks, Inc.
- May 13, 2013Crash risk2013–2014 Mack Chu, 2013–2014 Mack Granite (gu), 2013–2014 Mack Leu and 2 other models — Service Brakes
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.
13V195000 · 5K units · Mack Trucks, Inc.
- Oct 18, 2012Fire risk2009 Mack GU, 2008–2009 Mack Leu, 2008–2009 Mack Mru — Electrical System
Mack Trucks is recalling certain model year 2008-2009 GU, LEU, and MRU trucks, manufactured from December 12, 2007, through May 8, 2008 and equipped with a certain focal mounted retarder control box. The control box may lose its electrical ground.
12V519000 · 260 units · MACK TRUCKS, INC
- Mar 8, 2012Fire risk2010–2012 Mack Leu, 2011–2012 Mack Mru — Electrical System
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.
12V096000 · 318 units · MACK TRUCKS, INC
- Feb 21, 2012Crash risk2010–2011 Mack Leu, 2009–2011 Mack Mru — Suspension
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.
12V067000 · 4K units · MACK TRUCKS, INC
- Jul 20, 2011Crash risk2009–2012 Mack Mru — Steering
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.
11V374000 · 2K units · MACK TRUCKS, INC
- May 20, 2011Crash risk2012 Mack Granite (gu), 2012 Mack Leu, 2012 Mack Mru and 3 other models — Power Train
MACK TRUCKS IS RECALLING CERTAIN MODEL YEAR 2012, CHU, CXU, GU, MRU, LEU, AND TD TRUCKS EQUIPPED WITH A MERITOR DRIVELINE. THE TUBING USED TO ASSEMBLE THE AFFECTED DRIVELINES HAS A NONCONFORMING SEAM WELD WITH INSUFFICIENT BONDING OF THE MATERIAL.
11V295000 · 584 units · MACK TRUCKS, INC
- May 3, 2011Crash risk2012 Mack Granite (gu), 2011 Mack GU, 2011–2012 Mack Leu and 3 other models — Service Brakes, Air
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.
11V272000 · 2K units · MACK TRUCKS, INC
- Apr 1, 2011Fire risk2008–2012 Mack Leu, 2008–2012 Mack Mru — Electrical System
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.
11V212000 · 4K units · MACK TRUCKS, INC
- Sep 7, 2010Crash risk2008–2011 Mack GU, 2008–2011 Mack Mru — Service Brakes, Air
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."
10V404000 · 369 units · MACK TRUCKS, INC
- Jun 1, 2009Crash risk2009 Mack Leu, 2009 Mack Mru — Service Brakes, Air
MACK IS RECALLING 338 MODEL YEAR 2009 MRU AND LEU HEAVY DUTY TRUCKS MANUFACTURED FROM AUGUST 20 THROUGH NOVEMBER 26, 2008 EQUIPPED WITH CERTAIN HALDEX QUICK RELEASE VALVES (QRV). THE RUBBER DIAPHRAGM INSIDE THE QRV MAY EXPERIENCE DELAMINATION RESULTING IN SIGNIFICANT LEVELS OF AIR PRESSURE LEAKAGE PAST AND/OR THROUGH THE DIAPHRAGM, OR THE DEVELOPMENT OF A BUBBLE IN THE DIAPHRAGM WHICH MAY TRAP AIR PRESSURE IN THE VALVE AND NOT ALLOW THE SERVICE BRAKES TO RELEASE.
09V194000 · 338 units · MACK TRUCKS, INC
- Oct 11, 2007Fire risk2008 Mack Chu, 2008 Mack Cxu, 2008 Mack GU and 2 other models — Exterior Lighting
ON CERTAIN TRUCKS, THE DAYTIME RUNNING LIGHTS (DRL) MODULE MAY CONTAIN A SUSPECT METAL-OXIDE-SEMICONDUCTOR FIELD EFFECT TRANSISTOR (MOSFET) THAT COULD OVERHEAT.
07V478000 · 61 units · MACK TRUCKS, INC