2009 Jeep Grand Cherokee Owner's Manual - Page 438

436 MAINTAINING YOUR VEHICLE To prevent dirt and water from entering the transmission after checking or replenishing fluid, make certain that the dipstick cap is properly reseated. It is normal for the dipstick cap to spring back slightly from its fully seated position, as long as its seal remains engaged in the dipstick tube. Maintenance After Off-Road Driving After extended operation in mud, sand or water, or similar dirty conditions, have your brake discs, brake linings, and axle joints inspected and cleaned as soon as possible. This will prevent any abrasive material from causing excessive wear or unpredictable braking action. After driving off-road, completely inspect the underbody of your vehicle. Check the tires, body structure, steering, suspension and exhaust system for damage. Check threaded fasteners for looseness, particularly on the chassis, drivetrain components, steering and suspension. Retighten, if required, to torque values specified in the Service Manual. Also check for accumulations of vegetation or brush that could become a fire hazard, or conceal damage to fuel lines, brake hoses, axle pinion seals, and propeller shafts. CAUTION! Under frequent heavy-duty driving conditions, change all lubricants, and lubricate body components, all driveline joints and steering linkage more often than in normal service, to prevent excessive wear. Appearance Care And Protection From Corrosion Protection of Body and Paint from Corrosion Vehicle body care requirements vary according to geographic locations and usage. Chemicals that make roads