Spray 5- to 6-quart slow cooker with cooking spray. In slow cooker, mix wine, ketchup, brown sugar and soy sauce. Add 5 thyme sprigs.
Sprinkle ribs with salt and pepper. In 12-inch skillet, heat oil over medium-high heat. Add half of the ribs; cook about 8 minutes until brown on all sides. Remove from skillet and add to slow cooker. Repeat with remaining ribs. Place carrots and onions over ribs in slow cooker.
Cover; cook on Low heat setting 8 hours or until meat and vegetables are tender. Garnish with additional thyme.