The worst 2021 Mack Lrbe (Electric) problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
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Recalls 2
Electrical system: wiring: relays/solenoids
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2019-2023 LR battery electric trucks. The power cables that connect to the windscreen heater relay may have a loose connection and cause the relay to fail.
- Risk
- A relay that fails in the closed position will continue to power the cabin heater, overheating the relay and increasing the risk of a fire.
- Remedy
- Dealers will tighten the power cable to relay connection, free of charge. Owner notification letters are expected to be mailed August 4, 2023. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SCC0444.
Recall number 23V402000 · Recall details
Electrical system: wiring: switches/knobs/buttons
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2019 and 2021-2023 LRBE battery electric trucks. The cabin heater relay may fail, causing the coolant heater to overheat.
- Risk
- A coolant heater that overheats can increase the risk of fire.
- Remedy
- Dealers will update the software for the Hybrid Powertrain Control Unit and Instrument Cluster, and install replacement relays, free of charge. Owner notification letters were mailed March 16, 2023. Owners may contact Mack customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0440.
Recall number 23V024000 · Recall details
Technical service bulletins for the 2021 Mack Lrbe (Electric) 39
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
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- Battery Electric Vehicle (BEV)
- Certain BEV vehicles may present one or more of the symptoms below: • Vehicle Turns On but won’t start •...
- Air compressors may be observed cycling continuously at intervals of 10 to 30 seconds
- Frame lean can be caused by several seemingly isolated possibilities
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Questions about the 2021 Mack Lrbe (Electric)
Is the 2021 Mack Lrbe (Electric) reliable?
Owners have filed 0 complaints about the 2021 Mack Lrbe (Electric).
What is the most common problem with the 2021 Mack Lrbe (Electric)?
There are not enough complaints to tell.
How many recalls does the 2021 Mack Lrbe (Electric) have?
2 recalls, covering electrical system.
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