Volkswagen ID.4: Corrosion protection

Corrosion protection for attachments and welded components

• Immediately prime bare metal spots after repair.
• Always remove burrs from drill holes.
• Always apply welding primer/structural adhesive (according to vehicle-specific body repair workshop manual ) on both sides of welding flanges.
• Prime seam areas from the inside and outside before sealing them.
• Apply sealant only on panel parts coated with primer.
• Use sealant to completely seal overlapping panels, edges, butt joints, weld seams etc.
• Weld seams must not be ground, as otherwise the strength of the weld seam will be impaired.
• Establish paintwork structure as described in paintwork manual ⇒ General information, paint; Rep. gr. 54 ; General notes; Paintwork structure in aftersales .
• Restore the underseal using long-term underseal material.
• Seal cavities in repair area after top-coating.
• Separating cuts (e.g. in side panel) must be sealed completely.
• After the cavity sealant has dried, clear the water drains.

Cavity sealing

Important

• Before starting work it is important to consult the safety data sheets for information on safety measures.
• Even for products which are not required by law to be labelled, the usual safety measures for chemical products must be observed.
• Functional parts, e.g. brake systems, exhaust systems, rubber and plastic parts, must not be sprayed.

• Preservative which drips out can be easily wiped away.
• The approved plastic cleaner is suitable for removing dried material.
• Larger areas may be cleaned with a high-pressure steam cleaner. Splashes on painted surfaces should be removed immediately.

Surface repairNoise insulation