A Toyota Belt Squealing Issue: Belt issues on your Toyota or other car can often be misleading. A common complaint is of a small high pitched squeal from the belts at engine start up.
Starting in 2005 Ford produced vehicles with dimple dies in the firewall to save weight and increase strength. However, they did not successfully fill the gap they had created with such. As a result moisture leakage is a common problem plaguing many Ford vehicles to this day.