Understanding Illinois car repossession laws a comprehensive guide to your rights and available options. Use our EasyForm to fill out a letter to the repossession company to demand your property.ACCEPTANCE DATE: ("Acceptance Date"). SELLER'S INFORMATION: Seller's Signature: Seller's Name (print):. These forms are also available in the DotLoop and DocuSign form libraries. In addition to the CARspecific purchase and sale agreements, CAR members also have access to the MultiBoard Residential Real Estate Contract. Your right to repossess the vehicle should be clearly stated in the loan contract. Learn more about Illinois' repossession laws, what Illinois repo agents can and cannot do, and what happens after the car is taken away. The security interest identified in the contract will legally allow you to repossess the vehicle as collateral. Of course you can repo the car.