Recall 18V498 covers 167 2018 Thor Motor Coach Ace RVs with an LP hose routed where it contacts a tire. Dealer repair is free.
Thor Motor Coach is recalling 167 2018 Ace recreational vehicles because the rubber LP hose can sag into the wheel well and contact the tire. Tire contact can make the hose leak and raise the risk of a fire, and Thor Motor Coach dealers will complete the repair free of charge.
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What's wrong?
The rubber liquid propane hose on a 2018 Thor Motor Coach Ace carries LP gas from the coach's propane system to equipment that uses it. It is supposed to stay routed away from the wheel well and tire, with clamps holding the hose in place so it does not move into a rub point.
On affected Ace motorhomes, the hose was not secured with enough p-clamps, or the clamps were placed where they did not give the hose enough clearance. The hose sags into the wheel well and contacts the tire. As the tire turns, it rubs against the rubber hose and damages the line that is supposed to keep propane contained.
There is no warning sign before failure. Do not rely on smell, noise, or a dashboard message to catch this before the hose has been damaged.
Who's affected?
| 2018 Thor Motor Coach Ace | Lines and fittings |
|---|---|
| Units affected | 167 |
| Field incidents | NHTSA has logged no field incidents to date. |
Not every 2018 Thor Motor Coach Ace motorhome is on the list. Check your VIN to confirm whether your specific motorhome is included.
What's the safety risk?
NHTSA campaign 18V498 ties the risk to tire contact with the LP hose: a leak raises the risk of a fire. With no warning sign listed, schedule the inspection and hose securing work soon. Repair is free at any franchised Thor Motor Coach dealer.
What should I do?
- Check your VIN to confirm your 2018 Thor Motor Coach Ace is included in this recall.
- Contact a franchised Thor Motor Coach dealer to schedule the free LP-hose inspection, hose replacement if needed, and p-clamp repair that keeps the hose secured away from the tire.
- Bring the recall notice if Thor Motor Coach mailed one, or reference recall number 18V498 when you call.
- Avoid driving the RV if the LP hose is sagging or touching the tire, and keep the LP system off until the dealer repairs it.
What happens at the repair
At the dealer, a Thor Motor Coach technician inspects the rubber LP hose, replaces it if needed, and installs additional p-clamps or relocates the existing p-clamps so the hose is properly secured away from the tire area. Parts and labor are covered under the recall. Thor Motor Coach's general reimbursement plan is on file, so owners who already paid for a related LP hose repair before the recall notice should ask Thor Motor Coach customer service or the dealer how to submit documentation.
| Reimbursement | Reimbursement available |
|---|
Timeline
| July 30, 2018 | NHTSA published the recall |
|---|---|
| August 22, 2018 | Owner notification mailed |
| September 30, 2018 | Dealer notification began |
| September 30, 2018 | Dealer notification ended |
| September 30, 2018 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 18V498?
Recall 18V498 covers 167 2018 Thor Motor Coach Ace recreational vehicles with a rubber LP hose that can sag into the wheel well and contact the tire. Tire contact can make the hose leak LP gas, increasing fire risk. Dealers will inspect, secure, and replace the hose if needed for free.
What should I do if my 2018 Thor Motor Coach Ace is on this recall?
Check your VIN to confirm your specific motorhome is included in recall 18V498. If it is, contact a Thor Motor Coach dealer to schedule the LP hose inspection and repair. Reference recall number 18V498 or Thor Motor Coach recall RC000158 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Thor Motor Coach dealers will inspect the rubber LP hose, replace it if needed, and install or relocate p-clamps to secure the hose free of charge.
What is the safety risk?
The safety risk is an LP gas leak near the wheel well. In recall 18V498, NHTSA says contact between the tire and rubber LP hose can cause the hose to leak, increasing the risk of a fire. The free repair secures the hose away from tire contact.
When did the repair become available?
The recall repair became available when the recall began on August 22, 2018. Thor Motor Coach owners can contact a dealer for the LP hose inspection, hose replacement if needed, and p-clamp work. Thor Motor Coach customer service is available at 1-877-855-2867.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/18V498000 |
|---|---|
| Thor Motor Coach customer service | 1-877-855-2867 |
| NHTSA recall # | 18V498 |
| NHTSA recall # (full) | 18V498000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 25, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →