MACK 2011 MACK MRU Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2011 MACK MRU
Brand
MACK
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2011
MACK TRUCKS, INC is recalling certain 2011 MACK MRU vehicles due to electrical system:alternator/generator/regulator issues. IN THE EVENT OF AN ELECTRICAL SHORT, A VEHICLE FIRE MAY RESULT..
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
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.
Reported concern (NHTSA)
IN THE EVENT OF AN ELECTRICAL SHORT, A VEHICLE FIRE MAY RESULT.
Recommended Action
Per NHTSA guidance
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.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026