2021 Mack Lr Electric problems, complaints & recalls
Safety recalls (2)
Electrical System:propulsion System:traction Battery:thermal Management:fluid/Coolant 2022-09-21 · campaign 22V706000 · 1 vehicles
Defect: Mack Trucks, Inc. (Mack) is recalling one 2021 truck. The coolant line in the high voltage battery pack may not be fully seated and locked, which can result in the loss of coolant and an electrical short circuit.
Risk: A battery short circuit increases the risk of a fire.
Fix: Mack will inspect the battery packs, and replace them as necessary, free of charge. The affected vehicle was within the manufacturer's control, has been repaired, and therefore no owner letters were mailed. Owners may contact Mack's customer service at 1-800-866-1177.
Steering:hydraulic Power Assist System 2022-03-29 · campaign 22V204000 · 33 vehicles
Defect: Mack Trucks, Inc. (Mack) is recalling certain 2023 LR Battery Electric trucks. During certain driving maneuvers, the power steering system may lose pressure, causing a loss of power steering assist.
Risk: Loss of power steering assist increases the risk of a crash.
Fix: Dealers replace the higher ratio steering gear and power steering pump software for higher RPM's on the steering pump, free of charge. Owner notification letters were mailed on May 24, 2022. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0434.
Service bulletins (63)
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.
Electrical System 2024-04-10 · CBR-2364 202404 · Service Bulletin/Repair Instructions
cbr: battery electric vehicle (bev) dtc p108664 - charging switch unit b, voltage supply, signal plausibility failure
Electrical System:propulsion System 2024-02-19 · CBR-2349 202402 · Service Bulletin/Repair Instructions
cbr - bev fault code c102571 - hybrid/ev system, cooling heater relays - actuator stuck
Electrical System 2024-01-23 · CBR-2341 202401 · Service Bulletin/Repair Instructions
cbr: battery electric vehicle (bev) 3-wayvalve calibration failure
Electrical System 2024-01-18 · CBR-2333 202401 · Service Bulletin/Repair Instructions
cbr: tgw will not connect after sim card replacement
Suspension 2023-08-14 · M728-005A 202308 · Service Bulletin/Repair Instructions
tsb: barksdale leveling valve, leak test
Electrical System: Instrument Cluster/Panel 2023-08-11 · CBR-2299 202308 · Service Bulletin/Repair Instructions
cbr: battery electric vehicle (bev) - vehicle will not "start", limited speed, instrument cluster showing neutral after gear selected
Showing the 6 most recent of 63 bulletins. Search all of them free at nhtsa.gov.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.