2019 Mack Lr problems, complaints & recalls
Most-reported problem areas: Fuel System, Diesel (1)
Safety recalls (2)
Steering 2021-04-26 · campaign 21V293000 · 272 vehicles
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2019-2020 LR vehicles. The steering transfer case may have an insufficient amount of oil.
Risk: The internal bearings may fail without sufficient lubrication, causing steering lock-up and increasing the risk of a crash.
Fix: Dealers will replace the transfer case, free of charge. Owner notifications letters were mailed on May 12, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0424.
Tires 2018-11-15 · campaign 18V810000 · 818 vehicles
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2019 Mack Granite (GR), LR, and TerraPro (TE) trucks, equipped with Bridgestone M854 tires with DOT date codes 2418-2518, Bridgestone M860A tires with DOT date code 2518 or Bridgestone M864 tires with DOT date codes 2318-2418, all of size 425/65R22.5. The sidewall steel body cords may be exposed, possibly causing unexpected, rapid air loss while driving. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety St
Risk: Rapid tire air loss can increase the risk of a crash.
Fix: Mack will notify owners, instructing them to take their vehicles to Bridgestone Tire or Mack truck service centers for inspection and replacement, as necessary, free of charge. The recall began December 19, 2018. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0412.
Service bulletins (222)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Power Train 2026-04-09 · CBR 2573-1 202604 · Service Bulletin/Repair Instructions
cbr - mack chassis - through shaft bearing retainer breakage on mack carriers.
Power Train 2026-04-09 · CBR 2362-3 202604 · Service Bulletin/Repair Instructions
cbr - mack carrier nut adhesive change.
Electrical System 2026-02-04 · CBR 126 022026 · Service Bulletin/Repair Instructions
cbr - the purpose of this solution is to give information on engine control module (ems) software content.
Vehicle Speed Control 2026-01-08 · CBR 820-9 202601 · Service Bulletin/Repair Instructions
cbr - mack chassis - engine brake only works with the brake pedal, no function during cruise. us07 and newer emissions, model year 2008 and newer.
Engine 2026-01-07 · CBR 2107-22 202601 · Service Bulletin/Repair Instructions
cbr - mack def level (uqls) sensor troubleshooting guide - us17+obd16 emissions to us22+obd2023 (does not apply to an(4) and pr(4)).
Engine 2025-11-22 · CBR 2171-11 202511 · Service Bulletin/Repair Instructions
cbr - mack temperature sensor troubleshooting guide
Showing the 6 most recent of 222 bulletins. Search all of them free at nhtsa.gov.
What owners report
2023-07-24 · Fuel System, Diesel · 40,797 mi“the contact owns a 2019 mack lr64. the contact stated that while driving at an undisclosed speed, the secondary fuel filter detached, and the vehicle stalled. the vehicle was towed to an independent mechanic, where the vehicle was repaired. the fuel filter was replaced. the manufacturer was made aware of the failure. the failure mileage was approxi…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.