2000 Ford Focus Owner's Manual - Page 231

Maintenance and care Illumination of the Charging system warning light, Check engine light or a high engine temperature, fluid leaks, strange odors, smoke or loss of oil pressure, could indicate that the emission control system is not working properly. Exhaust leaks may result in entry of harmful and potentially lethal fumes into the passenger compartment. Do not make any unauthorized changes to your vehicle or engine. By law, vehicle owners and anyone who manufactures, repairs, items, sells, leases, trades vehicles, or supervises a fleet of vehicles are not permitted to intentionally remove an emission control device or prevent it from working. Information about your vehicle's emission system is on the Vehicle Emission Control Information Decal located on or near the engine. This decal identifies engine displacement and gives some tune up specifications. Please consult your Warranty Guide" for complete emission warranty information. 231