Recall 20V566 covers 350 2018, 2019, 2021 Newmar Canyon Star and Ventana motorhomes for valve stem damage. Free repair once available.
Newmar is recalling 350 2018, 2019, 2021 Ventana and Canyon Star motorhomes because the inner wheel tire valve stem extension can contact the outer wheel rim opening and become damaged. Damage to the extension can cause loss of inner-wheel tire pressure and increase crash risk, and the Newmar dealer repair will be free once available.
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What's wrong?
The tire valve stem extension on these 2018, 2019, 2021 Newmar Canyon Star and Ventana motorhomes gives access to the air valve on the inner rear wheel. The inner wheel sits behind the outer wheel, so the extension lets a technician check and adjust tire pressure without removing the outside wheel.
On affected motorhomes, that extension is routed close enough to the outer wheel rim opening that the rim can rub or strike it. Repeated contact damages the extension. If the damage becomes extensive, air escapes from the inner tire, tire pressure drops, and the remaining tire carries too much load. NHTSA campaign 20V566 ties that condition to an increased crash risk. Daimler Trucks North America authorized service facilities perform the repair at no cost.
There is no warning sign before failure. Owners can notice low tire pressure only after the extension has already been damaged or the inner tire has already lost air.
Who's affected?
Canyon Star appears for 2021, while Ventana appears for 2018 and 2019; tire and tire-valve listings are grouped under the same campaign.
| 2021 Newmar Canyon Star | tire |
|---|---|
| 2018 Newmar Ventana | tire |
| 2018 Newmar Ventana | tire |
| 2019 Newmar Ventana | tire |
| 2019 Newmar Ventana | tire |
| 2021 Newmar Canyon Star | tire |
| Units affected | 350 |
| 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 motorhome is included.
What's the safety risk?
Extensive damage to the valve stem extension can lead to tire-pressure loss in the inner wheel and increase crash risk. If the vehicle shows tire-pressure loss, stop in a safe place and arrange service. Repair will be free at any franchised Newmar dealer once available.
What should I do?
- Check your VIN to confirm your 2018, 2019, or 2021 Newmar Canyon Star or Ventana motorhome is included in this recall.
- Call Newmar customer service at 1-800-731-8300 for current repair instructions before scheduling work.
- Reference recall number 20V566 when you call Newmar or speak with the repair facility.
- Contact a franchised Newmar dealer or DTNA facility only after Newmar confirms the free tire valve stem extension repair is open.
- Drive cautiously until the repair is complete. Stop and get service if a tire loses pressure or the motorhome handles abnormally.
What happens at the repair
The final remedy for this recall is still under development, so do not assume the dealer can complete the permanent repair right now. Newmar says owners will be notified and the affected motorhomes will be repaired at DTNA facilities, free of charge, once the remedy is ready. The tire valve stem extension and wheel rim clearance are the repair focus. If you already paid for a related valve stem or wheel service before the recall notice, ask Newmar customer service how to submit documentation under the manufacturer's standard reimbursement plan.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 18, 2020 | NHTSA published the recall |
|---|---|
| November 9, 2020 | Owner notification mailed |
| November 17, 2020 | Dealer notification began |
| November 17, 2020 | Dealer notification ended |
| November 17, 2020 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 20V566?
Recall 20V566 covers 350 Newmar motorhomes, including 2021 Canyon Star and 2018-2019 Ventana models, built on DTNA chassis. The inner wheel tire valve stem extension can contact the outer wheel rim opening, become damaged, and lead to tire pressure loss that increases crash risk.
What should I do if my 2018, 2019, 2021 Newmar Canyon Star or Ventana is on this recall?
Check your VIN to confirm your specific motorhome is included in recall 20V566. If it is, contact Newmar customer service at 1-800-731-8300 or a franchised Newmar dealer, and reference Newmar recall number 20V-529 when you ask about the DTNA facility repair.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Newmar's remedy says DTNA facilities will repair the affected motorhomes free of charge. The remedy was still under development when Newmar filed the recall.
What is the safety risk?
The safety risk is loss of tire pressure at the inner wheel. If the valve stem extension is badly damaged by contact with the outer wheel rim opening, the inner tire can lose pressure and increase the risk of a crash.
What if I bought my Newmar motorhome used?
The free recall repair still applies. Federal recall law follows the vehicle, not the first owner. Check your VIN to confirm whether your Canyon Star or Ventana is included, then give the dealer or Newmar customer service recall number 20V-529.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V566000 |
|---|---|
| Newmar customer service | 1-800-731-8300 |
| NHTSA recall # | 20V566 |
| NHTSA recall # (full) | 20V566000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (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 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →