The law imposes special notice requirements with respect to motor homes. Manufacturers are to be given one final chance to repair the defect before you can take advantage of the remedies offered by the lemon law. Once the motor home has been subject to three repair attempts, or has been out of service by reason of repair for 21 days, whichever occurs first, you must report such fact to the manufacturer or its authorized dealer by certified mail, return receipt requested, before taking into account any additional repair attempts or days out-of-service and seeking arbitration or commencing a lawsuit under the lemon law.