Recall 24V347 covers 1 Custom Truck & Body Works-modified 2020 Ford F-550 vehicle for overloaded electrical circuits. Free firmware update through Custom Truck.
Custom Truck & Body Works is recalling 1 2020 Ford F-550 vehicle under recall 24V347 because Weldon 8X16 Input-Output node firmware can fail to shut off an output pin after a short circuit or wiring failure. The overloaded electrical circuit can overheat and increase fire risk, and a Ford dealer will complete the free repair.
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What's wrong?
On this 2020 Ford F-550, the 8 x 16 input-output node is an electronic control module that manages powered circuits on the upfitted truck body. It takes electrical commands and turns output pins on or off, sending power to connected equipment when that circuit is supposed to be active. The system depends on the node sensing current correctly and shutting a circuit down when a fault appears.
On the recalled node, the firmware version uses current-sensing calibration that was outside specification. If an external wire shorts or a wiring failure creates an abnormal load, the firmware does not shut off the output pin as designed. That leaves the circuit energized during the fault, which overloads the electrical circuit and leads to melted wiring.
There is no warning sign before failure. An owner is not given a reliable symptom before the node fails to shut the circuit off.
Who's affected?
| 2020 Custom Truck & Body Works Ford F-550 | wiring |
|---|---|
| Units affected | 1 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Overloaded electrical circuits overheat and increase the risk of fire. There is no warning sign before failure, so schedule the firmware update soon and avoid adding electrical load until the repair is complete. 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 schedule the free firmware update that corrects the Weldon node output-pin failure.
- Bring the recall notice if you have it, or give the dealer recall number 24V347 when scheduling.
- Call Custom Truck & Body Works customer service at 1-888-712-2963 with questions and reference recall number 24V347 when you call.
What happens at the repair
At the dealer, a Ford technician updates the firmware in the Weldon node. The update is free under the recall and is meant to correct how the node handles an electrical short or wiring failure, so the output pin shuts off instead of leaving the circuit overloaded. For related repairs paid before the recall notice, Custom Truck & Body Works has a general reimbursement plan on file. Keep any invoices or payment records and contact Custom Truck customer service at 1-888-712-2963 for claim instructions.
| Reimbursement | Reimbursement available |
|---|
Timeline
| May 16, 2024 | NHTSA published the recall |
|---|---|
| May 17, 2024 | Owner notification mailed |
| May 17, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V347?
Recall 24V347 covers 1 2020 Custom Truck & Body Works Ford F-550 equipped with Weldon 8X16 Input-Output nodes. In a short circuit or wiring failure, the node firmware can leave an output pin on, overload electrical circuits, and raise fire risk.
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 vehicle is included in recall 24V347. If it is, contact Custom Truck & Body Works customer service at 1-888-712-2963 and ask how to get the firmware update completed. The repair is free.
Does the recall repair cost anything?
No. Federal recall law requires the manufacturer to repair the defect at no cost. Custom Truck & Body Works will update the Weldon node firmware free of charge for the included 2020 Ford F-550.
What is the fire risk in recall 24V347?
The fire risk comes from overloaded electrical circuits. NHTSA campaign 24V347 says a short circuit or wiring failure can cause the firmware to keep an output pin on, which can overheat electrical circuits and increase fire risk.
When was the owner notified about recall 24V347?
Custom Truck & Body Works planned to mail the owner notification letter on May 17, 2024. Because this recall covers 1 vehicle, the VIN check is still the cleanest way to confirm whether the specific Ford F-550 is included before arranging the firmware update.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V347000 |
|---|---|
| Custom Truck & Body Works customer service | 1-888-712-2963 |
| NHTSA recall # | 24V347 |
| NHTSA recall # (full) | 24V347000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Report (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Acknowledgement (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 →