2005 Chrysler Crossfire Owner's Manual - Page 198

198 MAINTAINING YOUR VEHICLE ONBOARD DIAGNOSTIC SYSTEM (OBD II) To meet new government regulations and promote cleaner air, your Crossfire is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions and engine control systems. When these systems are operating properly, your vehicle will provide excellent performance and fuel economy, as well as engine emissions well within current government regulations. If any of these systems require service, the OBD II system will turn on the CHECK ENGINE Light. It will also store diagnostic codes and other information to assist your service technician in making repairs. Although your vehicle will usually be drivable and not need towing, see your authorized dealer for service as soon as possible. CAUTION! Prolonged driving with the CHECK ENGINE light on could cause further damage to the emission control system. It could also affect fuel economy and drivability. The vehicle must be serviced before any state emissions tests can be performed. If the CHECK ENGINE light is flashing, severe catalytic converter damage and power loss will soon occur. Immediate service is required. If the gas cap is not tightened properly, the CHECK ENGINE light may come on. Be sure the gas cap is tightened every time you add fuel. Tighten the cap until you hear it "click" once.