2003 Nissan Murano Owner's Manual - Page 194

CORROSION PROTECTION MOST COMMON FACTORS CONTRIBUTING TO VEHICLE CORROSION: ¼ The accumulation of moisture-retaining dirt and debris in body panel sections, cavities, and other areas. ¼ Damage to paint and other protective coatings caused by gravel and stone chips or minor traffic accidents. Temperature A temperature increase will accelerate the rate of corrosion to those parts which are not well ventilated. CAUTION ¼ NEVER remove dirt, sand or other debris from the passenger compartment by washing it out with a hose. Remove dirt with a vacuum cleaner or broom. ¼ Never allow water or other liquids to come in contact with electronic components inside the vehicle as this may damage them. Chemicals used for road surface de-icing are extremely corrosive. They accelerate corrosion and deterioration of underbody components such as the exhaust system, fuel and brake lines, brake cables, floor pan and fenders. In winter, the underbody must be cleaned periodically. For additional protection against rust and corrosion, which may be required in some areas, consult your local NISSAN dealer. Air pollution Industrial pollution, the presence of salt in the air in coastal areas, or heavy road salt use will accelerate the corrosion process. Road salt will also accelerate the disintegration of paint surfaces. ENVIRONMENTAL FACTORS INFLUENCE THE RATE OF CORROSION: Moisture Accumulation of sand, dirt and water on the vehicle body underside can accelerate corrosion. Wet floor coverings will not dry completely inside the vehicle, and should be removed for drying to avoid floor panel corrosion. TO PROTECT YOUR VEHICLE FROM CORROSION: ¼ Wash and wax your vehicle often to keep the vehicle clean. ¼ Always check for minor damage to the paint and repair it as soon as possible. ¼ Keep drain holes at the bottom of the doors open to avoid water accumulation. ¼ Check the underbody for accumulation of sand, dirt or salt. If present, wash with water as soon as possible. Relative humidity Corrosion will be accelerated in areas of high relative humidity, especially those areas where the temperatures stay above freezing and where atmospheric pollution exists and road salt is used. Appearance and care 7-5