Idaho Code § 49-1701: Labor and material liens on motor vehicles.

Every person has a lien, dependent upon possession, for the compensation to which he is legally entitled for making repairs or performing labor upon, and/or for the furnishing supplies or materials for, and/or for the towing, storage, repair or safekeeping of, and/or for the rental of parking space for any vehicle of a type subject to registration under the motor vehicle code, and upon the contents thereof.