Interior windnoise will not be heard with a lowered window. Interior windnoise is caused by air leaving the inside of the vehicle through a seal or a seam.

Caution: An assistant should drive the vehicle while the technician checks for the location of the reported condition. Otherwise, personal injury could result.

1. Tape over the pressure relief valves in order to increase the air pressure within the vehicle.
2. Test drive the vehicle.
3. Listen for windnoise whistle.
4. Stop the vehicle.
5. Use masking tape in order to make temporary repairs.
6. If this procedure does not determine the source of the windnoise, refer to Tracing Powder or Chalk Test or to Soap Suds or Bubble Test .