Manual Description
Then put the fuel filler cap back on the filler neck and screw it on clockwise until you clearly hear a clicking sound. This allows unburned fuel to get into the exhaust system and damage the catalytic converter or the diesel particulate filter. Closing the fuel filler cap Screw the fuel cap clockwise onto the fuel filler neck until you hear it click into place.
The misfueling guard helps prevent filling the fuel tank of a diesel vehicle with gasoline, because the guard makes it difficult to insert any type of filler nozzle other than the type commonly used for diesel fuel. The misfueling guard can generally only be properly opened with a correct nozzle from a standard diesel fuel pump. Under certain circumstances it may be necessary to turn the nozzle back and forth slightly with light pressure to open the misfueling guard.
The same applies if diesel fuel gets onto other parts of the vehicle, especially paint, tires, or a plastic part. Wash the contaminated vehicle parts right away with soap and warm water to help prevent leaks and serious damage. Forcing a fuel nozzle in the misfueling guard can damage it so that it can no longer help prevent misfueling.
Manual Cover
General