Trim away any excess fibers from the edges of the crack with a pair of scissors. Cut as close to the surface as you can without further damaging the faux leather. This will minimize the appearance of the crack and make for a seamless repair.
Wash the cracked area with warm, soapy water. Gently scrub the area with a clean rag to remove any dirt and debris from the surface of the furniture. Blot the area dry.
Wipe the area with a soft cloth dipped in denatured alcohol to remove any remaining soap residue. Rinse with warm water and blot dry with a clean rag.
Choose a vinyl repair kit that matches the exact shade of your leather furniture and comes with a filler compound for scratches. Put on a pair of gloves then mix the filler compound, according to the instructions provided in the kit.
Apply the filler compound to the scratch with a Popsicle stick then allow it to dry for at least 10 minutes. Rub the area gently with fine-grit sandpaper to work the compound into the crack and match the look of the faux leather grain.
Rub a small amount of filler compound over the entire area with a soft cloth. This will blend the coloring of the repaired area with the rest of the furniture to create a seamless repair.