Vehicle Care 327Inspect power steering for properhook-up, binding, leaks, cracks,chafing, etc.Visually check constant velocity jointboots and axle seals for leaks.For 1500 Series vehicles, at leastevery other oil change lubricate theouter tie rod ends.Control arm ball joints on 1500Series vehicles aremaintenance-free.CautionLubrication of applicable steering/suspension points should not bedone unless the temperature is−12 °C (10 °F) or higher,or damage could result.Body Component LubricationLubricate all key lock cylinders,hood hinges, liftgate hinges, steelfuel door hinge and power assiststep hinges, unless the componentsare plastic. Applying silicone greaseon weatherstrips with a clean clothwill make them last longer, sealbetter, and not stick or squeak.Underbody MaintenanceAt least twice a year, spring and fall,use plain water to flush anycorrosive materials from theunderbody. Take care to thoroughlyclean any areas where mud andother debris can collect. If equippedwith power running boards, extendthem and then use a high pressurewash to clean all joints and gaps.Do not directly power wash thetransfer case and/or front/rear axleoutput seals. High pressure watercan overcome the seals andcontaminate the fluid. Contaminatedfluid will decrease the life of thetransfer case and/or axles andshould be replaced.Sheet Metal DamageIf the vehicle is damaged andrequires sheet metal repair orreplacement, make sure the bodyrepair shop applies anti-corrosionmaterial to parts repaired orreplaced to restore corrosionprotection.Original manufacturer replacementparts will provide the corrosionprotection while maintaining thevehicle warranty.Finish DamageQuickly repair minor chips andscratches with touch-up materialsavailable from your dealer to avoidcorrosion. Larger areas of finishdamage can be corrected in yourdealer's body and paint shop.Chemical Paint SpottingAirborne pollutants can fall uponand attack painted vehicle surfacescausing blotchy, ring-shapeddiscolorations, and small, irregulardark spots etched into the paintsurface. See “Finish Care”previously in this section.Interior CareTo prevent dirt particle abrasions,regularly clean the vehicle's interior.Immediately remove any soils.