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Volkswagen ID.4 Owners & Service Manuals

Volkswagen ID.4: Corrosion protection

Volkswagen ID.4 (E21) 2021-2025 Service Manual / General information - Body / 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.

Volkswagen ID.4 (E21) 2021-2025 Service Manual

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