One problem related to overdrive light on has been reported for the 2008 Ford Escape. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Ford Escape based on all problems reported for the 2008 Escape.
While driving with the transmission in overdrive the wrench light was activated and I noticed no change in speed but noticed a very large change in the tachometer from 2000 rpm to 4500 at that time the car just started slowing down until I took it out of o/d and just continued on my way. It seems like it is something in the transmission that is causing this problem.