One problem related to power window has been reported for the 2008 Honda Ridgeline. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Honda Ridgeline based on all problems reported for the 2008 Ridgeline.
Driverside rear passenger window regulator failed. As I was putting the window down. It started crunching then stopped. I had to push the window up while using the power button, window will slowly drop on it own. I haven't had it replaced yet.