Recall 19V792 affects 2,725 2016-2020 Western Star 4900 and 5700 trucks for vent windows that detach. Repair is free at any franchised Western Star dealer.
Western Star is recalling 2,725 2016-2020 4900 and 5700 vehicles with sleeper cab vent windows because improper adhesive can let the vent window detach while driving. A detached window can become a road hazard and increase crash risk, and Western Star dealers will complete the repair free of charge.
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What's wrong?
The sleeper cab vent window on 2016-2020 Western Star 4900 and 5700 trucks is the small opening window in the sleeper cab wall. It is held in place by an adhesive bond as part of the vent window and strut assembly. That bond keeps the window sealed and attached while the cab moves, vibrates, and takes normal road loads.
On affected trucks, the adhesive was not applied or controlled correctly during manufacturing. The bond between the vent window assembly and the cab can fail. When that happens, the vent window separates from the truck instead of staying fixed in the sleeper cab opening.
There is no warning sign before failure. The window can look normal until the adhesive bond gives up, so an owner does not get a clear noise, light, or handling change that reliably signals the problem in advance.
Who's affected?
Covers the 4900 and 5700 truck lines from 2016 through 2020, all tied to the same visibility component.
| 2016 Western Star 4900 | visibility component |
|---|---|
| 2017 Western Star 4900 | visibility component |
| 2016 Western Star 5700 | visibility component |
| 2017 Western Star 5700 | visibility component |
| 2018 Western Star 4900 | visibility component |
| 2018 Western Star 5700 | visibility component |
| 2019 Western Star 4900 | visibility component |
| 2019 Western Star 5700 | visibility component |
| 2020 Western Star 5700 | visibility component |
| 2020 Western Star 4900 | visibility component |
| Units affected | 2,725 |
| 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 this recall applies to your specific truck.
What's the safety risk?
In NHTSA campaign 19V792, a detached vent window can become a road hazard and increase the risk of a crash. Drive cautiously and schedule the recall repair promptly if your VIN is included. Repair is free at any franchised Western Star dealer.
What should I do?
- Check your VIN to confirm your 2016-2020 Western Star 4900 or 5700 is included in this recall.
- Contact a franchised Western Star dealer to schedule the free vent-window replacement that fixes the improper adhesive that lets the sleeper cab vent window detach.
- Bring the recall notice if DTNA mailed one. If not, reference recall number 19V792 and Western Star recall FL-836 when you call.
- Drive with caution until the repair is complete, since a detached vent window can become a road hazard.
What happens at the repair
At the dealer, a Western Star technician removes the affected sleeper cab vent windows and installs replacement vent windows. The dealer repair is free, including parts and labor. Use a Western Star dealer or authorized service facility for the campaign so the repair is recorded against your VIN. Before the visit, ask the service desk whether the truck needs any inspection before normal use, especially if a vent window looks loose or has started to separate from the cab.
Timeline
| November 4, 2019 | NHTSA published the recall |
|---|---|
| January 2, 2020 | Dealer notification began |
| January 2, 2020 | Dealer notification ended |
| January 2, 2020 | Interim owner notification (was planned for this date) |
| September 21, 2020 | Owner notification mailed |
Frequently asked questions
What is recall 19V792?
Recall 19V792 covers 2,725 2016-2020 Western Star 4900 and 5700 vehicles with sleeper cab vent windows. Improper adhesive can let the vent window detach from the vehicle. Western Star dealers will replace the vent windows for free.
What should I do if my 2016-2020 Western Star 4900 or 5700 is on this recall?
Check your VIN to confirm your specific truck is included in recall 19V792. If it is, contact a franchised Western Star dealer to schedule the vent-window replacement. Reference recall number 19V792 or Western Star recall FL-836 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost. A franchised Western Star dealer will replace the affected sleeper cab vent windows free of charge, including parts and labor.
What is the safety risk?
The safety risk is that a sleeper cab vent window can detach while the truck is moving and become a road hazard, increasing crash risk. If your VIN is included, arrange the free vent-window replacement with a franchised Western Star dealer.
What if I bought my Western Star truck used?
The free recall repair still applies. Federal recall law follows the vehicle, not the first owner. Check your VIN to confirm whether your specific 4900 or 5700 is included, then call a franchised Western Star dealer and reference recall 19V792.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/19V792000 |
|---|---|
| Western Star customer service | 1-800-547-0712 |
| NHTSA recall # | 19V792 |
| NHTSA recall # (full) | 19V792000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Owner Notice (PDF)
- Download Quarterly Report (PDF)
- Download Misc. Document (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (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 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →