2012 MACK LEU Complaints and Recall Information
The 2012 MACK LEU has 0 complaints and 8 recalls filed with NHTSA. Owners most frequently report issues related to brake components, driveline defects, electrical system vulnerabilities, engine concerns, and exterior lighting problems as reflected in the recall notices.
There are eight recalls associated with the 2012 MACK LEU, involving systems such as brakes, driveline, electrical components, engine, exhaust system, and lighting. These recalls address critical safety and operational defects requiring free repairs or part replacements by dealers.
Recalls- Service brakes - automatic slack adjusters. NHTSA recall 11V272000 affects 1,524 vehicles. Certain models have slack adjusters with incomplete iron casting that may break under normal loads. This can cause loss of braking and increased crash risk. Dealers will replace the faulty slack adjusters free of charge.
- Power train driveline tubing. Recall 11V295000 involves 584 trucks with Meritor drivelines having seam welds with insufficient bonding. Weld fractures may disable the driveline or create roadway debris, increasing crash risk. Dealers will replace drivelines at no cost.
- Electrical system overcurrent protection. Recall 11V212000 covers 3,763 trucks where the fuse protecting the mirror switch may fail, causing the switch to overheat and potentially start a vehicle fire. Dealers will install relay harnesses and inspect or replace switch components free of charge.
- Alternator ground cable routing. Recall 12V096000 affects 318 vehicles built for compressed natural gas operation. The alternator ground cable design defeats circuit protection, risking vehicle fire from electrical shorts. Dealers will relocate the ground cable free of charge.
- Engine intake manifold pressure sensor. Recall 14V137000 impacts 1,934 trucks with Cummins Westport engines. Condensation may freeze and impair sensor operation, causing elevated exhaust temperatures or flame exposure near the exhaust pipe. Cummins will provide ECM recalibration at no cost.
- Exterior lighting flasher unit. Recall 14V208000 covers 44,047 trucks with Hamsar electronic flashers, where hazard warning lights may fail. Reduced visibility raises crash risk. Dealers will replace the flasher unit free of charge.
- Exhaust pipe connection. Recall 14V088000 involves 958 trucks with Cummins ISL engines. The exhaust pipe may disconnect from the muffler, exposing operators to carbon monoxide, especially in right-side operated twin-steer vehicles. Owners will be notified for free repairs.
- Engine crankcase pressure vent tube. Recall 15V275000 includes 2,124 trucks experiencing detachment of the 90-degree elbow from the crankcase breather. Engine oil may contact hot surfaces, increasing fire risk. Repairs include securing the vent tube and ECM reprogramming at no cost.
Owners facing repeated repairs or unresolved recall issues involving these defects may want to explore their rights under state lemon laws related to safety and reliability concerns.
2012 MACK LEU Summary
2012
Model Year
0
Total Complaints
8
Total Recalls
55252
Vehicles Affected
Recalls
2012 MACK LEU
2124 vehicles affected
ENGINE AND ENGINE COOLING:ENGINE
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.
Risk: If engine oil comes into contact with a hot surface, there could be an increased risk of a fire.
2012 MACK LEU
958 vehicles affected
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
Mack Trucks, Inc. (Mack) is recalling certain model year 2010-2015 LEU vehicles manufactured May 14, 2009, through February 14, 2014, and equipped with a Cummins ISL engine. In the affected vehicles, the exhaust pipe may disconnect from the muffler/catalyst.
Risk: If the exhaust pipe separates from the muffler on a twin-steer configured vehicle where the vehicle is operated from the right side, the operator may be exposed to carbon monoxide levels which may cause personal injury.
2012 MACK LEU
44047 vehicles affected
EXTERIOR LIGHTING:TURN SIGNAL:FLASHER UNIT
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.
Risk: A failure of the hazard warning lights could reduce the trucks visibility, increasing the risk of a crash.
2012 MACK LEU
1934 vehicles affected
ENGINE AND ENGINE COOLING:ENGINE
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.
Risk: 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.
2012 MACK LEU
318 vehicles affected
ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
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.
Risk: IN THE EVENT OF AN ELECTRICAL SHORT, A VEHICLE FIRE MAY RESULT.
2012 MACK LEU
3763 vehicles affected
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.
Risk: 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.
2012 MACK LEU
584 vehicles affected
POWER TRAIN:DRIVELINE
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.
Risk: THIS CAN RESULT IN SEAM WELD FRACTURE WHEN TORQUE IS APPLIED. ONCE THE TUBE SEAM WELD IS FRACTURED, THE DRIVELINE MAY BECOME INOPERABLE WHICH MAY RESULT IN A DISABLED VEHICLE OR DEBRIS FROM THE DRIVELINE MAY FALL ON THE ROADWAY, BOTH OF WHICH CAN INCREASE THE RISK OF A CRASH.
2012 MACK LEU
1524 vehicles affected
SERVICE BRAKES, AIR:SLACK ADJUSTERS:AUTOMATIC
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.
Risk: SLACK ADJUSTERS WITH THIS FLOW NOTCH COULD CRACK UNDER NORMAL BRAKING CONDITIONS CAUSING LOSS OF BRAKING WHICH COULD RESULT IN A VEHICLE CRASH.
Complaints
No complaints found.