Recall 24V063 covers 628 2020-2024 Braun Ambulances emergency vehicles for faulty Weldon node firmware. Repair is free at any franchised Braun Ambulances dealer.
Braun Ambulances is recalling 628 2020-2024 emergency vehicles, including Chief Xl Type I and Express Type Iii models, because Weldon 8X16 Input-Output node firmware can leave an output pin on after a short circuit or wiring failure. Overloaded electrical circuits can overheat and increase the risk of fire, and Braun Ambulances dealers will complete the repair free of charge.
Does this recall apply to your specific vehicle?
The official, free per-VIN recall check is run by NHTSA. Enter your VIN and we'll forward you directly — and add you to a free watchlist so you hear about new recalls for your vehicle.
Check my VIN at NHTSARecallNotify doesn't check your VIN — NHTSA's official tool does. We use your email only to alert you to new recalls.
Watch this vehicle for recalls
Add it to your free watchlist and we will alert you as new federal recalls are posted for your year, make and model. New-recall alerts are rolling out now.
You are on the watchlist.
We will email you as new federal recalls are posted for your vehicle.
What's wrong?
The V-MUX 8X16 I/O node is an electrical control module used in certain 2020-2024 Braun Ambulances emergency vehicles. It works like a traffic director for body electrical circuits, reading input signals and switching output pins on or off so equipment gets power only when commanded. The recall covers nodes with firmware versions 1.00 through 1.02.
In the affected nodes, the electrical current sensing calibration was built outside specification. If external wiring or a connected load shorts, the firmware does not shut off the output pin as designed. That leaves the circuit energized during a fault. The wiring or connected load can overheat, and depending on where the node is installed, that overheating increases the risk of a vehicle fire.
There is no warning sign before failure. An owner or service crew will not have a reliable light, sound, or dashboard message that tells them the node failed to shut down a shorted circuit.
Who's affected?
Spans 8 Braun Ambulances models across the 2020-2024 model years, all tied to the same V-MUX 8X16 I/O Nodes wiring.
| 2021 Braun Ambulances Chief Xl Type I | wiring |
|---|---|
| 2020 Braun Ambulances Liberty Type I | wiring |
| 2020 Braun Ambulances Signature Series Type Iii | wiring |
| 2021 Braun Ambulances Signature Series Type Iii | wiring |
| 2020 Braun Ambulances Super Chief Type I | wiring |
| 2023 Braun Ambulances Signature Series Type Iii | wiring |
| 2021 Braun Ambulances Signature Series Type I | wiring |
| 2023 Braun Ambulances Signature Series Type I | wiring |
| 2020 Braun Ambulances Express Type Iii | wiring |
| 2023 Braun Ambulances Chief Xl Type Iii | wiring |
| 2024 Braun Ambulances Express Type Iii | wiring |
| 2022 Braun Ambulances Super Chief Type I | wiring |
| 2023 Braun Ambulances Chief Xl Type I | wiring |
| 2022 Braun Ambulances Chief Xl Type I | wiring |
| 2023 Braun Ambulances Express Plus Type I | wiring |
| 2021 Braun Ambulances Express Plus Type I | wiring |
| 2023 Braun Ambulances Liberty Type I | wiring |
| 2022 Braun Ambulances Liberty Type I | wiring |
| 2021 Braun Ambulances Liberty Type I | wiring |
| 2023 Braun Ambulances Super Chief Type I | wiring |
| 2021 Braun Ambulances Chief Xl Type Iii | wiring |
| 2022 Braun Ambulances Chief Xl Type Iii | wiring |
| 2020 Braun Ambulances Chief Xl Type Iii | wiring |
| 2020 Braun Ambulances Express Plus Type I | wiring |
| 2022 Braun Ambulances Express Plus Type I | wiring |
| 2021 Braun Ambulances Super Chief Type I | wiring |
| 2022 Braun Ambulances Signature Series Type Iii | wiring |
| 2020 Braun Ambulances Signature Series Type I | wiring |
| 2022 Braun Ambulances Signature Series Type I | wiring |
| 2021 Braun Ambulances Express Type Iii | wiring |
| 2022 Braun Ambulances Express Type Iii | wiring |
| 2023 Braun Ambulances Express Type Iii | wiring |
| 2020 Braun Ambulances Chief Xl Type I | wiring |
| Units affected | 628 |
| Field incidents | NHTSA has logged 1 field incident to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific vehicle is included.
What's the safety risk?
Overloaded electrical circuits can overheat and increase the risk of fire. Until the firmware update is completed, take electrical smells, smoke, or unusual heat seriously, stop using the vehicle, and call the dealer for service guidance. Repair is free at any franchised Braun Ambulances dealer.
What should I do?
- Check your VIN to confirm your 2020-2024 Braun Ambulances emergency vehicle is included in this recall.
- Contact Braun Ambulances to schedule the free Weldon 8X16 node firmware update that restores output-pin shutoff after a short circuit or wiring failure.
- Bring the owner notice if you have it, and reference recall number 24V063 and Braun Ambulances recall 2024-01 when you call.
- Ask whether Akron Brass, Weldon, or Braun Ambulances will handle the firmware update for your vehicle before you take it in.
- Stop using the ambulance and call Braun Ambulances if the electrical system overheats, smells hot, or shows smoke before the repair.
What happens at the repair
At the dealer, a Braun Ambulances technician updates the firmware in the Weldon Input-Output node so the module handles electrical output shutoff correctly. The software update is free under the recall, and parts and labor are covered. If you already paid for a related repair before the owner letter, Braun Ambulances will review reimbursement individually. Contact Braun Ambulances customer service or Akron Brass customer service with the repair paperwork and payment records.
| Reimbursement | Reimbursement available |
|---|
Timeline
| February 1, 2024 | NHTSA published the recall |
|---|---|
| February 9, 2024 | Dealer notification began |
| February 12, 2024 | Interim owner notification (was planned for this date) |
| February 16, 2024 | Dealer notification ended |
| February 28, 2024 | Owner notification mailed |
Frequently asked questions
What is recall 24V063?
Recall 24V063 covers 628 2020-2024 Braun Ambulances emergency vehicles equipped with Weldon 8X16 Input-Output nodes. A short circuit or wiring failure can leave an output pin on, overload an electrical circuit, and increase fire risk. Weldon will update the firmware for free.
What should I do if my 2020-2024 Braun Ambulances Chief Xl Type I, Liberty Type I, Signature Series Type Iii, Super Chief Type I, Signature Series Type I, Express Type Iii, Chief Xl Type Iii, or Express Plus Type I is on this recall?
Check your VIN to confirm your specific emergency vehicle is included in recall 24V063. If it is, contact Braun Ambulances or Akron Brass customer service to arrange the free Weldon firmware update. Reference Braun recall number 2024-01 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Weldon will update the affected firmware free of charge. Braun Ambulances owner letters were mailed February 28, 2024 with repair and contact instructions.
What is the safety risk?
The safety risk is fire. In a short circuit or wiring failure, the Weldon node firmware can fail to shut off the output pin. That can overload an electrical circuit, cause overheating, and increase fire risk in the emergency vehicle.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V063000 |
|---|---|
| Braun Ambulances customer service | 1-800-228-1161 |
| NHTSA recall # | 24V063 |
| NHTSA recall # (full) | 24V063000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notice (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →