The contact owns a 2003 Workhorse W22. The contact stated that upon stopping the motorhome in her driveway, her husband discovered a bluish-black color smoke emitting from underneath the vehicle. The rear passenger side brake caliper had caught fire and the contact's husband was able to extinguish the fire with a water hose. The fire department was not called and a report was not filed. The contact stated that the brake and ABS warning lights had illuminated on the instrument panel after the failure. The contact's husband took pictures of the damage and showed them to an independent mechanic. The mechanic then informed the contact's husband of NHTSA Campaign Number: 09V110000(SERVICE BRAKES, HYDRAULIC) which he linked to the failure. The mechanic contacted then notified the manufacturer of the failure but received no assistance. The contact also made multiple attempts to reach the manufacturer but had no success. The vehicle had yet to be repaired. The failure mileage was approximately 54,000.