If your 2020-2024 Rev Ambulance Type I, Type Ix, or Type Iii VIN is in recall 23V873, the firmware update is free.
Rev Ambulance is recalling 210 2020-2024 Type I, Type Iii, and Type Ix vehicles because a short circuit or wiring failure can leave an output pin on and overload electrical circuits. Overloaded circuits can overheat and raise the risk of fire; Rev Ambulance dealers will complete the repair free of charge.
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What's wrong?
The affected 2020-2024 Rev Ambulance Type I, Type Ix, and Type Iii vehicles use a V-MUX 8 x 16 Input / Output Node in the electrical system. This module is an electronic control box. It receives switch or sensor inputs and sends power out to equipment circuits, so lights, accessories, and other ambulance body functions turn on and off when commanded.
On these vehicles, the issue is in the node firmware, the software inside the module. If a short circuit or wiring failure occurs, the firmware does not shut off the affected output pin, which is the connection sending power to that circuit. That leaves the circuit overloaded instead of shutting it down.
The owner record does not list a symptom before the problem happens. There is no warning sign before failure.
Who's affected?
The scope spans Type I, Type Ix, and Type Iii ambulance configurations across the 2020-2024 model years, all tied to the same wiring component.
| 2020 Rev Ambulance Type I | wiring |
|---|---|
| 2024 Rev Ambulance Type Ix | wiring |
| 2022 Rev Ambulance Type Ix | wiring |
| 2023 Rev Ambulance Type Ix | wiring |
| 2021 Rev Ambulance Type Ix | wiring |
| 2024 Rev Ambulance Type Iii | wiring |
| 2023 Rev Ambulance Type Iii | wiring |
| 2021 Rev Ambulance Type Iii | wiring |
| 2020 Rev Ambulance Type Iii | wiring |
| 2024 Rev Ambulance Type I | wiring |
| 2023 Rev Ambulance Type I | wiring |
| 2020 Rev Ambulance Type Ix | wiring |
| 2022 Rev Ambulance Type Iii | wiring |
| 2022 Rev Ambulance Type I | wiring |
| 2021 Rev Ambulance Type I | wiring |
| Units affected | 210 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific vehicle is included.
What's the safety risk?
Overloaded electrical circuits can overheat, increasing the risk of fire. If your VIN is included, schedule the firmware update promptly and follow any instructions from the dealer until the repair is complete. Repair is free at any franchised Rev Ambulance dealer.
What should I do?
- Check your VIN to confirm your 2020-2024 Rev Ambulance Type I, Type Ix, or Type Iii vehicle is included in this recall.
- Contact a franchised Rev Ambulance dealer to schedule the free firmware update that fixes the output-pin shutoff problem in the electrical system.
- Bring the recall notice if Rev Ambulance mailed one. If not, reference recall number 23V873 when you call.
- Call Rev Ambulance customer service at 1-855-661-9232 with questions about scheduling or repair status.
- Avoid unnecessary operation until the firmware update is complete because overloaded electrical circuits can overheat.
What happens at the repair
At the dealer, a Rev Ambulance technician updates the vehicle firmware at no charge. The update addresses firmware that fails to shut off an output pin after a short circuit or wiring failure, which can overload electrical circuits. The firmware update is free under recall 23V873. Ask the service desk to confirm the software version after the update is complete and keep the repair paperwork with the vehicle records.
Timeline
| December 21, 2023 | NHTSA published the recall |
|---|---|
| January 15, 2024 | Dealer notification began |
| January 15, 2024 | Owner notification mailed |
| January 22, 2024 | Interim owner notification (was planned for this date) |
| March 1, 2024 | Dealer notification ended |
Frequently asked questions
What is recall 23V873?
Recall 23V873 covers 210 2020-2024 Rev Ambulance Type I, Type Ix, and Type Iii vehicles with an electrical wiring firmware issue. In a short circuit or wiring failure, overloaded electrical circuits can overheat and increase fire risk. Dealers will update the firmware for free.
What should I do if my 2020-2024 Rev Ambulance Type I, Type Ix, or Type Iii is on this recall?
Check your VIN to confirm your specific ambulance is included in recall 23V873. If it is, contact a franchised Rev Ambulance dealer or REV customer service at 1-855-661-9232 to schedule the firmware update. The dealer repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and REV says dealers will update the firmware free of charge. Parts and labor are covered for vehicles included in recall 23V873.
What is the safety risk?
The safety risk is fire. REV reported that overloaded electrical circuits can overheat after a short circuit or wiring failure, increasing the risk of fire. If your VIN is included, schedule the free firmware update with a franchised Rev Ambulance dealer.
When were owners notified about recall 23V873?
REV mailed owner notification letters on January 15, 2024. If you bought the ambulance used or never received a letter, check your VIN to confirm whether your specific Type I, Type Ix, or Type Iii vehicle is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V873000 |
|---|---|
| Rev Ambulance customer service | 1-855-661-9232 |
| NHTSA recall # | 23V873 |
| NHTSA recall # (full) | 23V873000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (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 →