Mack Lr — High Voltage
High risk
Mar 26, 2025
Model years: 2022, 2023, 2024
Issue: On a small number of electric trucks, hardware inside the high-voltage battery pack may not have been tightened properly. As a result, the hardware could loosen and detach.
Mack Lr — Electrical
High risk
Mar 27, 2024
Model years: 2024, 2025
Issue: On certain trucks, the fuse for the methane detection system may not have been installed during production. As a result, the methane detector may not work. Note: This recall
Mack Lr — Electrical
High risk
Nov 22, 2023
Model years: 2023, 2024
On certain trucks, the engine may not return to idle if the accelerator pedal position sensor becomes disconnected. As a result, the trucks don't meet certain requirements of Canad
Also affects: Mack Terrapro
Mack Lr — Engine
High risk
Oct 31, 2023
Model years: 2024
On a small number of trucks equipped with a Cummins L9N natural gas engine, when the engine is lifted, the rear lifting bracket attached to the cylinder head could detach. If this
Also affects: Mack Terrapro
Mack Lr — Electrical
High risk
Jan 24, 2023
Model years: 2022
On a small number of LR Electric models, a relay for the coolant heater could fail. If this happens, the heater could stay energized when there is no coolant flow or a low coolant
Mack Lr — Lights And Instruments
High risk
Jun 15, 2022
Model years: 2016, 2017, 2018, 2019, 2020
On certain trucks, some controls are not identified with the required symbol(s) or word(s). Specifically, the identifications for the HVAC fan control, the position side marker lig
Also affects: Mack Anthem, Mack Granite, Mack Pinnacle
Mack Lr — Steering
High risk
Jun 7, 2022
Model years: 2022, 2023
Issue: On certain trucks, the steering gear may not have been assembled correctly. As a result, the steering gear could break and cause a loss of steering. Safety Risk: A loss of s
Also affects: Mack Terrapro, Mack Granite, Mack Pinnacle, Mack Anthem
Mack Lr — Steering
High risk
Apr 26, 2021
Model years: 2019, 2020
Issue: On a small number of trucks, the steering transfer case was not properly filled with oil. As a result, the bearings may fail and the steering could lock-up. Safety Risk: A l
Mack Lr — Tires
High risk
Nov 21, 2018
Model years: 2019
Certain trucks were equipped with Bridgestone M864, M860A or M854 wide-base tires, size 425/65R22.5, that may not conform to the endurance testing requirements of Canada Motor Vehi
Also affects: Mack Granite, Mack Terrapro
Mack Lr — Electrical
High risk
Apr 19, 2017
Model years: 2017
Certain vehicles may have been built with an incorrectly sized alternator cable. This could potentially result in the cable overheating, which may increase the risk of a vehicle fi
Also affects: Mack Leu, Mack Mru
Mack Lr — Powertrain
High risk
Oct 11, 2016
Model years: 2016
On certain vehicles, the cap nut that retains the interaxle driveshaft yoke to the rear axle input shaft may prematurely loosen. If the nut were to loosen and come off, the yoke co
Also affects: Mack Chu, Mack Cxu, Mack Gu, Mack Leu, Mack Mru