Recall 25V329 covers 3 Custom Truck & Body Works-modified 2020 Ford F-550 trucks for overloaded electrical circuits. All vehicles were repaired for free.
Custom Truck & Body Works is recalling 3 2020 Ford F-550 vehicles under recall 25V329 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 raise the risk of fire, and a Ford dealer will complete the repair free of charge.
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What's wrong?
The recalled part is the Weldon 8X16 Input-Output node, listed as a V-MUX node, on certain 2020 Ford F-550 vehicles built by Custom Truck & Body Works. It acts as an electronic switch box for the upfit wiring. When the truck sends a command, the node turns an output pin on or off so the connected circuit gets power only when it should.
The problem is in the node firmware, which is the software inside that switch box. If there is a short circuit or wiring failure, the firmware can fail to shut off the output pin. That leaves the circuit powered when it should be cut off, which can overload the electrical wiring. The recalled range is tied to firmware version, not the truck model name alone.
There is no warning sign before failure. The issue is inside the node software, so an owner is not expected to hear, smell, or see a clear early symptom during normal driving.
Who's affected?
| 2020 Custom Truck & Body Works Ford F-550 | wiring |
|---|---|
| Units affected | 3 |
A matching 2020 Ford F-550 does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Overloaded electrical circuits can overheat and increase the risk of fire. There is no warning sign listed before the electrical overload, so do not wait for a dashboard alert before checking whether your VIN still needs the firmware update. Repair is free at any franchised Ford dealer.
What should I do?
- Check your VIN to confirm your 2020 Custom Truck & Body Works Ford F-550 is included in this recall.
- Contact a franchised Ford dealer to coordinate the free firmware update if your VIN shows an open recall.
- Ask for the firmware update that lets the Weldon electrical node shut off the output pin after a short circuit or wiring failure.
- Call Custom Truck & Body Works customer service at 1-888-712-2963 with questions and reference recall number 25V329 when you call.
- Confirm the repair is recorded as complete before using the truck for regular service.
What happens at the repair
At the Ford service visit, a Ford technician works with Custom Truck and Weldon to update the Weldon node firmware. The update is free under recall 25V329. The new firmware corrects the node software so the output pin shuts off as intended after a short circuit or wiring failure. Custom Truck reports that all vehicles have been repaired. If your VIN still shows this recall open, contact the service desk and ask them to confirm the firmware update is complete.
Timeline
| June 2, 2025 | NHTSA published the recall |
|---|
Frequently asked questions
What is recall 25V329?
Recall 25V329 covers 3 2020 Custom Truck & Body Works Ford F-550 vehicles equipped with Weldon 8X16 Input-Output nodes. A short circuit or wiring failure can leave an output pin on, overload electrical circuits, and increase fire risk. Custom Truck worked with Weldon to update the firmware for free.
What should I do if my 2020 Custom Truck & Body Works Ford F-550 is on this recall?
Check your VIN to confirm your specific truck is included in recall 25V329. If it is, call Custom Truck customer service at 1-888-712-2963 and reference recall 25V329. The source record says all affected vehicles were repaired, but your VIN confirms your truck's status.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Custom Truck's remedy says it worked with Weldon to update the firmware free of charge. Parts and labor are covered for an included vehicle.
What is the safety risk?
The safety risk is electrical overheating and fire. In an affected truck, a short circuit or wiring failure can cause the Weldon node firmware to leave an output pin on, overloading the circuit. Confirm your VIN and contact Custom Truck if the recall remains open for your truck.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/25V329000 |
|---|---|
| Custom Truck & Body Works customer service | 1-888-712-2963 |
| NHTSA recall # | 25V329 |
| NHTSA recall # (full) | 25V329000 |
Source documents
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 19, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →