Recall 20V312 covers 566 2020 Thor Motor Coach motorhomes for fender-liner brake-hose chafing. Free repair at a franchised dealer.
Thor Motor Coach is recalling 566 2020 Tiburon, Compass, Siesta, and other motorhomes because the front fender liner can rub against the brake hose and cause a brake fluid leak. A leak can lengthen stopping distance and raise crash risk; the Thor Motor Coach dealer repair is free.
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What's wrong?
The front fender liner on these 2020 Thor Motor Coach motorhomes is the protective panel inside the front wheel area. It helps shield the wheel housing from road spray and debris. The front brake hose is a flexible line that carries brake fluid to the front brakes, so it needs clear space as the suspension and steering move.
On affected Daybreak, Four Winds, Delano, Gemini, Quantum, Tiburon, Chateau Citation, Compass, Chateau, Siesta, Freedom Elite, and Synergy motorhomes built on the Mercedes-Benz Sprinter chassis, the rear part of that liner can sit too close to the brake hose. If the liner is deformed or installed with too little clearance, it rubs the hose. That chafing can wear through the hose and let brake fluid leak out.
There is no warning sign before failure. Once fluid is leaking, the red brake fluid warning indicator can display, and brake performance can be reduced.
Who's affected?
All listed models share the same component areas: body structure and hydraulic brake hose.
| 2020 Thor Motor Coach Tiburon | body structure |
|---|---|
| 2020 Thor Motor Coach Tiburon | hydraulic brake hose |
| 2020 Thor Motor Coach Compass | body structure |
| 2020 Thor Motor Coach Compass | hydraulic brake hose |
| 2020 Thor Motor Coach Siesta | body structure |
| 2020 Thor Motor Coach Siesta | hydraulic brake hose |
| 2020 Thor Motor Coach Chateau Citation | body structure |
| 2020 Thor Motor Coach Chateau Citation | hydraulic brake hose |
| 2020 Thor Motor Coach Delano | body structure |
| 2020 Thor Motor Coach Delano | hydraulic brake hose |
| 2020 Thor Motor Coach Gemini | body structure |
| 2020 Thor Motor Coach Gemini | hydraulic brake hose |
| 2020 Thor Motor Coach Synergy | body structure |
| 2020 Thor Motor Coach Synergy | hydraulic brake hose |
| 2020 Thor Motor Coach Chateau | body structure |
| 2020 Thor Motor Coach Chateau | hydraulic brake hose |
| 2020 Thor Motor Coach Four Winds | body structure |
| 2020 Thor Motor Coach Four Winds | hydraulic brake hose |
| 2020 Thor Motor Coach Freedom Elite | body structure |
| 2020 Thor Motor Coach Freedom Elite | hydraulic brake hose |
| 2020 Thor Motor Coach Quantum | body structure |
| 2020 Thor Motor Coach Quantum | hydraulic brake hose |
| 2020 Thor Motor Coach Daybreak | body structure |
| 2020 Thor Motor Coach Daybreak | hydraulic brake hose |
| Units affected | 566 |
| Field incidents | NHTSA has logged 1 field incident to date. |
A matching 2020 Thor Motor Coach model does not confirm inclusion. Check your VIN to confirm whether your specific motorhome is included.
What's the safety risk?
A brake-fluid leak can lengthen stopping distance and increase the risk of a crash. Schedule the inspection soon, drive cautiously until the hoses are checked, and treat any change in braking feel as a reason to stop and call the dealer. Repair is free at any franchised Thor Motor Coach dealer.
What should I do?
- Check your VIN to confirm your 2020 Thor Motor Coach Tiburon, Compass, Siesta, Chateau Citation, Delano, Gemini, Synergy, Chateau, Four Winds, Freedom Elite, Quantum, or Daybreak is included in this recall.
- Contact Thor Motor Coach customer service or an authorized Mercedes-Benz dealer to schedule the free brake-hose inspection and fender-liner clearance repair that stops the liner from chafing the brake hose.
- Bring the recall notice if Thor Motor Coach mailed one. If not, reference recall number 20V312 when you call.
- Drive cautiously until the repair is complete. Leave extra following distance because a brake-fluid leak increases stopping distance.
What happens at the repair
The recall repair is available now. At the dealer, the technician inspects the front brake hoses for chafing and replaces any hose that shows damage. The dealer also alters the fender liner to create more clearance so it does not contact the brake hose. Parts and labor are free under the recall. Out-of-pocket repairs already paid are handled through the vehicle's New Vehicle Limited Warranty, not through a separate reimbursement program, since all involved motorhomes remain under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| May 28, 2020 | NHTSA published the recall |
|---|---|
| June 25, 2020 | Owner notification mailed |
| July 27, 2020 | Dealer notification began |
| July 27, 2020 | Dealer notification ended |
| July 27, 2020 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| July 27, 2020 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 20V312?
Recall 20V312 covers 566 2020 Thor Motor Coach motorhomes built on Mercedes-Benz Sprinter platform 907 (VS30). The front-axle fender liner can contact and chafe a brake hose, causing brake fluid loss and longer stopping distance. The inspection, hose replacement if needed, and fender-liner clearance change are free.
What should I do if my 2020 Thor Motor Coach motorhome is on this recall?
Check your VIN to confirm your specific motorhome is included in recall 20V312. If it is, contact Thor Motor Coach customer service at 1-877-855-2867 or a franchised Thor Motor Coach service contact for repair routing. Reference recall number 20V312 and Thor Motor Coach recall RC000191 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Thor Motor Coach says all repairs for recall 20V312 are free. The repair includes brake-hose inspection, brake-hose replacement if needed, and a fender-liner clearance change.
What is the safety risk?
The safety risk is longer stopping distance from brake fluid loss. If the fender liner chafes the front brake hose, brake fluid can leak and braking distance can increase, raising crash risk. If your VIN is included, arrange the free inspection and repair.
What if I bought this Thor Motor Coach 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 specific 2020 Thor Motor Coach motorhome is included, then reference recall 20V312 and Thor Motor Coach recall RC000191 when you call for service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V312000 |
|---|---|
| Thor Motor Coach customer service | 1-877-855-2867 |
| NHTSA recall # | 20V312 |
| NHTSA recall # (full) | 20V312000 |
Source documents
-
Download Misc. Document (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 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →