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Home >> Volkswagen >> 2021 >> Jetta R-Line, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> General, Technical Data [CZDA,DGXA,DJXA,CWLA] >> 00 General, Technical Data >> Repair Information >> Contact Corrosion
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Contact Corrosion

Contact corrosion can occur if incorrect fasteners are used (bolts, nuts, washers, etc.).

For this reason, only fasteners with a special surface coating are installed.

In addition, rubber or plastic parts and adhesive are made of materials that do not conduct electricity.

If there are doubts about whether the parts are suitable, then use new parts. Refer to the Parts Information.