One problem related to transmission noise has been reported for the 2013 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Ford Explorer based on all problems reported for the 2013 Explorer.
Power transfer unit "ptu" began leaking spontaneously; looks like leaking motor oil on the ground. Caused grinding noise and dangerous transmission issues when driving. Solution was replacement of the ptu which cost $1650 by Ford service.