Mack · United States · Crit
Mack Lrbe (Electric): Electrical system — switches/knobs/buttons
Affects Mack Lrbe (Electric) · 2019–2023 — about 43 vehicles.
The hazard
A coolant heater that overheats can increase the risk of fire.
What to do
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.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational