To enable us to determine if you are entitled to any No-Fault benefits, please complete and immediately return the enclosed. Find out how to write a demand letter for an auto accident settlement below.What to Expect From a Car Accident Settlement. In this comprehensive guide, we'll walk you through an example car accident settlement letter and break down its key elements. If you are injured in a motor vehicle accident, file a written notice of claim with the No-Fault insurer that identify the injured person(s). Your letter should include a concise factual summary of the accident, an overview of your damages, your settlement demand, and not much more. A car accident settlement letter is a formal document sent to an insurance company, outlining your claim for compensation following a motor vehicle accident. Learn about cash settlements in your case and how they are accepted and approved. David Azizi explains the process of cash settlement acceptance. A car accident settlement letter is a formal document sent to an insurance company, outlining your claim for compensation following a motor vehicle accident.