2021 AEV Freightliner M2 Ambulance, 2020–2021 AEV Traumahawk, 2020 AEV Type 1 F-Series Ambulance Recall: These displays may experience low voltage spikes, and cause the LCD…
NHTSA campaign 20V783000 · Electrical System · filed Dec 15, 2020 · verified Jul 30, 2026
The defect
Halcore Group, Inc. (Halcore) is recalling certain 2020-2021 American Emergency Vehicle Traumahawk Type I Ram 4500, 2020 American Emergency Vehicle Type I Ford F-450 and Ford F-550, and 2021 American Emergency Vehicle Medium Duty Ambulance Freightliner M2 vehicles, equipped with Weldon V-Mux Vista IV Standard LCD displays used for controlling emergency vehicle lighting and HVAC functions. These displays may experience low voltage spikes, and cause the LCD display to lock up or become nonfunctional, due to varying electrical installations.
The risk
If the LCD display becomes locked up or non-functional it can delay emergency efforts, which can increase the risk of injury.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Halcore will notify owners, and dealers will provide updated replacement Vista IV units, free of charge. The recall began January 11, 2021. Owners may contact Halcore customer service at 1-800-447-0343. Halcore's number for this recall is 20E-078.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| AEV | Freightliner M2 Ambulance | 2021 |
| AEV | Traumahawk | 2020, 2021 |
| AEV | Type 1 F-Series Ambulance | 2020 |
Related recalls
Other campaigns involving AEV vehicles
All AEV Freightliner M2 Ambulance recalls → · All AEV recalls →
Source: NHTSA recall database, campaign 20V783000 (manufacturer number 20E-078). Data last verified Jul 30, 2026.