One problem related to side/window air bag has been reported for the 2008 Nissan Xterra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Nissan Xterra based on all problems reported for the 2008 Xterra.
Both side curtain airbags deployed and driver and front passenger seatbelts locked up. Vehicle was traveling over a gravel road. It was loaded up but not heavily weighted. Speed was about 5mph.