Volkswagen ID.4: Locating water ingress

Special tools and workshop equipment required

• ultrasonic tester - V.A.G 1842S

Removing

• Complete ⇒ Rep. gr. 52 ; Check list for locating water ingress together with vehicle user.
• Observe Technical Product Information (TPIs).
• Check seals, accident damage, blockages of water drains.

Preparing vehicle

Important

• The vehicle must be dry on the inside and outside.

Locating water ingress

The procedure of locating water ingress is described for the front door as an example.

Determining contact pressure of seal

• Coat door seal with chalk.
• Close door.
• Open door.

Important

• The contact pattern of the chalk must be even on both sides of the sealing surface.

• Clamp a piece of solid paper in the door and slowly pull out piece of paper.

Important

• It should not be possible to withdraw the piece of paper from the door without difficulty.

Locating water ingress with soapy water

• Wet the door in the area of the side window and the edges with soapy water -A-.

Important

• The aid of an additional person is required for the subsequent work steps.

• Blow compressed air -C- against door from the inside.
• Check vehicle from outside in area of door for soap bubbles -B-.

If the point of water ingress has been located:

• Eliminate cause for water ingress

• Make leaking seams water-tight.
• Reseal areas that have missing adhesive, or remove the component and apply new adhesive during installation.
• If the contact pressure of the seal is too low, adjust components to each other.

• Water vehicle again.
• Carry out water test again.

Continued

If the point of water ingress has not been located:

• Use ultrasonic tester - V.A.G 1842S- to locate water ingress.

Causes of water ingressInterior equipment