i called today about my 94' and they said it was only covered for 8 year or 80 thousand miles. So they wouldnt do it for free.
I am having the same problem with my 94. I just found this info, and it is too early to call (9am east coast ) , but here you go:
Customer Satisfaction Department
Mail Drop L203, 19001 South Western Ave
Torrance, CA 90509-2732
Toll free: 1-800-25 LEXUS
Fax: Fax: 310-468-2992
I hope they take care of us!!
This should help.
seatbelt_cleaning_lexus.pdf