2016 Mack Lr6 Recalls

Recalls on record Updated July 2026

The 2016 Mack Lr6 has 1 NHTSA recall campaign affecting an estimated 2,124 vehicles. Recall repairs are always free at any authorized dealer. Last updated July 5, 2026.

Recall campaigns

ENGINE AND ENGINE COOLING 15V275000 2015-05-11 2,124 affected
Defect

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…

Consequence

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

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. …

Defect investigations

Investigation PE20005 Opened 2020-04-28 · closed 2022-04-04

mDrive Transmission Failure to Disengage

On April 28, 2020, the Office of Defects Investigation (ODI) opened PE20-005 to investigate reports of 2013-2015 Mack CHU and CXU trucks equipped with mDrive transmissions continuing to push forward when stopping, possibly increasing the risk of a crash. After more field reports were discovered, the scope of the…

Sources & methodology

Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2016 Mack Lr6 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.