Two problems related to rear seat belt have been reported for the 1998 Volvo V70. The most recently reported issues are listed below.
In late February 2005, my wife noticed that the child seats in our 1998 Volvo V70 would loosen up when our children would get in or move in their seats. These child seats were of the stationary type and of different makes. As one of the rear outboard seat belts had already been replaced at no charge for a similar concern in June 2003, we visited our regional Volvo dealership to report the issue. New belt assemblies were ordered and on March 15th of this year, both outer rear seat belts were replaced. This time, since we had to pay for the repair, I retrieved the failed parts. Examination of both seat belts buckles seem to suggest that the failure of the belts' child seat locking tab, which is part of the buckle, prevented the child seat from staying securely held in position. These assemblies are available for you to analyze and draw an expert conclusion. We requested a review of the problem by the district service manager and filed an e-mail complaint with Volvo's customer assistance center. The VIN of the car is yv1lw5584w3468600.
The seat belt in the center back seat broke. Yh.