Transporter 7D: Documentary about Whistling Noises (Solution)

As the vehicle's speed increases, a loud whistling noise occurs.
A noise is occurring in the area of the control panel. This affects vehicles with air conditioning.

Cause:
The whistling sound could be caused by a wrongly installed or kinked water drain hose on the blower housing.

Solution:
Check if rotating the water hose eliminates the noise. If this measure is unsuccessful, replace the water drain hose with part number: 7D0 820 124.