55 ILCS 5/5-1092
A county board may declare by ordinance inoperable motor vehicles, whether on public or private property, to be a nuisance and authorize fines to be levied for the failure of any person to obey a notice received from the county which states that such person is to dispose of any inoperable motor vehicles under his control, and may authorize a law enforcement agency, with applicable jurisdiction, to remove, after 7 days from the issuance of the county notice, any inoperable motor vehicle or parts thereof. However, nothing in this Section shall apply to any motor vehicle that is kept within a building when not in use, to operable historic vehicles over 25 years of age, or to a motor vehicle on the premises of a place of business engaged in the wrecking or junking of motor vehicles.
As used in this Section, "inoperable motor vehicle" means any motor vehicle from which, for a period of at least 7 days or any longer period of time fixed by ordinance, the engine, wheels or other parts have been removed, or on which the engine, wheels or other parts have been altered, damaged or otherwise so treated that the vehicle is incapable of being driven under its own motor power. "Inoperable motor vehicle" shall not include a motor vehicle which has been rendered temporarily incapable of being driven under its own motor power in order to perform ordinary service or repair operations. In a non-home rule county with a population of more than 500,000, "inoperable motor vehicle" also includes any motor vehicle that does not have a current license plate or current license tags attached to it if a current license plate or license tags are required under the Illinois Vehicle Code.
55 ILCS 5/5-1092