One problem related to driveshaft has been reported for the 2004 Volvo XC90. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Volvo XC90 based on all problems reported for the 2004 XC90.
Transmission replaced two times, at approx. 38,000 and at about 48,000 miles. Units start slipping when shifting to second gear and leave you right where you are until they decide to rengage. Ball joints and all four hubs replaced by 50,000 miles. Axles (front) need replacing now at 70,000 miles. Sway bar ends replaced at 55,000 miles. This is the neediest vehicle I have ever owned. Front bearings on drive shaft replaced last month, worn since abut fifteen thousand miles, finally got so loud that we could shake the drive shaft and get a quarter of play at the bearing set.