Recall 21V535 affects 11 2020 Spartan Fire Metrostar and Gladiator vehicles for LCD display lockup. Repair is free at any franchised Spartan Fire dealer.
Spartan Fire is recalling 11 2020 Metrostar and Gladiator emergency vehicles because the Weldon V-Mux Vista IV LCD display can lock up or stop working after low voltage spikes. The display controls emergency lighting and HVAC functions, so a failure can delay emergency efforts and increase injury risk; Spartan Fire dealers will complete the repair free of charge.
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What's wrong?
The Weldon V-Mux Vista IV display in 2020 Spartan Fire Metrostar and Gladiator vehicles is the dashboard user interface for emergency lighting and HVAC controls. It is an LCD screen tied into the vehicle's electrical system, so the operator can select and monitor those functions from the display instead of separate switches.
On affected vehicles, electrical voltage can drop or spike outside the display's operating range during startup. The display is supposed to restart after that kind of electrical event, but affected units do not always restart successfully. A component change made this revision more sensitive to negative voltage spikes, and the wiring layout in the vehicle affects how severe the spike is. The result is a locked or blank display.
There is no warning sign before failure. The first thing an operator notices is the Vista IV screen locking up or going blank, which leaves the lighting and HVAC controls unavailable until the unit resets or is repaired.
Who's affected?
Covers Metrostar and Gladiator fire-truck configurations using the Vista IV instrument-panel user interface.
| 2020 Spartan Fire Metrostar | instrument panel |
|---|---|
| 2020 Spartan Fire Gladiator | instrument panel |
| Units affected | 11 |
| Field incidents | NHTSA has logged 2 field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific truck.
What's the safety risk?
If the LCD display locks up or stops working, emergency efforts can be delayed, increasing the risk of injury. There is no warning sign before failure, so confirm whether your VIN is included and schedule the repair soon. Repair is free at any franchised Spartan Fire dealer.
What should I do?
- Check your VIN to confirm your 2020 Spartan Fire Metrostar or Gladiator is included in this recall.
- Contact a franchised Spartan Fire dealer to schedule the free LCD display repair or replacement that fixes lockups in the emergency lighting and HVAC controls.
- Bring the recall notice if you have it. If not, reference recall number 21V535 when you call.
- Limit emergency-service use until the repair is complete if the display locks up or stops working.
What happens at the repair
At the dealer, a Spartan Fire technician repairs the IV Standard LCD display or replaces it if repair is not enough. The display controls emergency lighting and HVAC functions, so the service visit should focus on restoring that display function and confirming the controls respond normally. Parts and labor are covered under recall 21V535. If you already paid for this display repair, contact Toyne customer service and ask how to submit documentation under Toyne's general reimbursement plan on file.
| Reimbursement | Reimbursement available |
|---|
Timeline
| July 15, 2021 | NHTSA published the recall |
|---|---|
| July 15, 2021 | Dealer notification began |
| July 15, 2021 | Interim owner notification (was planned for this date) |
| July 31, 2021 | Dealer notification ended |
| October 13, 2021 | Owner notification mailed |
Frequently asked questions
What is recall 21V535?
Recall 21V535 covers 11 2020 Spartan Fire Metrostar and Gladiator emergency vehicles with Weldon V-Mux Vista IV Standard LCD displays. Low-voltage spikes can lock up the display or make it nonfunctional, affecting emergency lighting and HVAC controls. Dealers will repair or replace the display for free.
What should I do if my 2020 Spartan Fire Metrostar or Gladiator is on this recall?
Check your VIN to confirm your specific emergency vehicle is included in recall 21V535. If it is, contact a franchised Spartan Fire dealer to schedule the LCD display repair or replacement. Reference recall number 21V535 and Spartan Fire recall number 07-21 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. For recall 21V535, dealers will repair or replace the affected Weldon V-Mux Vista IV Standard LCD display free of charge, including covered parts and labor.
What is the safety risk?
The safety risk is delayed emergency response. If the LCD display locks up or stops working, emergency lighting and HVAC controls can be affected during use, which can delay emergency efforts and increase injury risk. The free dealer repair addresses the display problem.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V535000 |
|---|---|
| Spartan Fire customer service | 1-712-673-2328 |
| NHTSA recall # | 21V535 |
| NHTSA recall # (full) | 21V535000 |
Source documents
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 →