If your 2017 Quantum VIN is in recall 17V264, Thor Motor Coach will move the step power wire to the correct breaker for free.
Thor Motor Coach is recalling 36 2017 Quantum motorhomes because the step power-supply wire was attached to a 50 amp circuit breaker instead of the required 20 amp breaker. If the step circuit overloads, the breaker can fail to trip as intended, and that increases the risk of a fire; Thor Motor Coach dealers will complete the repair free of charge.
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What's wrong?
The exterior step on the 2017 Thor Motor Coach Quantum uses a power supply wire to move the step in and out when the coach entry is used. That wire is 12 gauge, which means it is sized for a specific amount of electrical current. The circuit breaker is supposed to protect that wire by opening the circuit when current is too high.
On affected Quantum KM24 motorhomes, Thor Motor Coach found the step wire attached to a 50 amp breaker instead of the intended 20 amp breaker. The wire was installed that way during production. Because the breaker is rated higher than the step wire was designed for, the circuit does not have the protection Thor Motor Coach intended for that step wiring.
There is no warning sign before failure. The recall filing does not tell owners to watch for a light, sound, smell, or change in step operation.
Who's affected?
| 2017 Thor Motor Coach Quantum | electrical system |
|---|---|
| Units affected | 36 |
| Field incidents | NHTSA has logged no field incidents to date. |
Not every 2017 Thor Motor Coach Quantum motorhome is on the list. Check your VIN to confirm whether your specific motorhome is included.
What's the safety risk?
An overloaded step circuit can keep drawing power if the breaker fails to trip as intended. That raises the risk of a fire. Schedule the repair soon and leave step wiring changes to the dealer. Repair is free at any franchised Thor Motor Coach dealer.
What should I do?
- Check your VIN to confirm your 2017 Thor Motor Coach Quantum is included in this recall.
- Contact a franchised Thor Motor Coach dealer to schedule the free step power-wire repair that moves the step circuit from the 50 amp breaker to the correct 20 amp breaker.
- Reference recall number 17V264 when you call, and bring the recall notice if Thor Motor Coach mailed one.
- Avoid using the electric steps until the dealer completes the repair.
- Call Thor Motor Coach customer service at 1-877-500-1020 if the dealer needs help matching the recall to your Quantum.
What happens at the repair
At the dealer, a Thor Motor Coach technician relocates the electric step power wire from the incorrect 50 amp breaker to the correct 20 amp breaker, then confirms the step circuit is attached to the proper protection. The recall repair is free, including parts and labor. If you already paid for this step wiring repair, Thor Motor Coach says reimbursement is handled through the normal warranty claim process. Ask the service desk to attach your prior repair paperwork to that warranty claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| April 20, 2017 | NHTSA published the recall |
|---|---|
| June 2, 2017 | Owner notification mailed |
| June 7, 2017 | Dealer notification began |
| June 7, 2017 | Dealer notification ended |
| June 7, 2017 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| June 7, 2017 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 17V264?
Recall 17V264 covers 36 2017 Thor Motor Coach Quantum motorhomes with a step power wire connected to a 50 amp circuit breaker instead of the correct 20 amp breaker. Thor Motor Coach dealers will relocate the wire to the correct breaker for free.
What should I do if my 2017 Thor Motor Coach Quantum is on this recall?
Check your VIN to confirm your specific motorhome is included in recall 17V264. If it is, contact a franchised Thor Motor Coach dealer to schedule the step wiring repair. Reference recall number 17V264 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to complete the recall repair at no cost, and Thor Motor Coach says dealers will relocate the step power wire to the correct breaker free of charge.
What is the safety risk?
The safety risk is fire. If the step circuit overloads, the incorrectly sized breaker will not trip as intended, increasing fire risk. The repair moves the step power wire from the 50 amp breaker to the correct 20 amp breaker.
What if I bought my Thor Motor Coach Quantum used?
The free recall repair still applies. Recall coverage follows the vehicle, not the first owner. Check your VIN to confirm whether your specific 2017 Quantum is included, then contact a franchised Thor Motor Coach dealer and reference recall number 17V264.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/17V264000 |
|---|---|
| Thor Motor Coach customer service | 1-877-500-1020 |
| NHTSA recall # | 17V264 |
| NHTSA recall # (full) | 17V264000 |
Source documents
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 →