2008 Dodge Avenger Owner's Manual - Page 180

178 UNDERSTANDING YOUR INSTRUMENT PANEL CAUTION! The TPMS has been optimized for the original equipment tires and wheels. TPMS pressures and warning have been established for the tire size equipped on your vehicle. Undesirable system operation or sensor damage may result when using replacement equipment that is not of the same size, type, and/or style. Aftermarket wheels can cause sensor damage. Do not use aftermarket tire sealants or balance beads if your vehicle is equipped with a TPMS, as damage to the sensors may result. (Refer to "Tire Inflation Pressures" under "Tires - General Information" and to "Tire Pressure Monitor System (TPMS)" in Section 5 of this manual for more information). 25. Malfunction Indicator Light This light is part of an onboard diagnostic system called OBD that monitors emissions, engine, and automatic transaxle control systems. The light will illuminate when the key is in the ON/RUN position before engine start. If the bulb does not come on when turning the key from LOCK/OFF to ON/RUN, have the condition checked promptly. Certain conditions such as a loose or missing gas cap, poor fuel quality, etc. may illuminate the light after engine start. The vehicle should be serviced if the light stays on through several of your typical driving cycles. In most situations the vehicle will drive normally and will not require towing. If the Malfunction Indicator Light flashes when the engine is running, serious conditions may exist that