Volvo S80 1999–2000 — technical service bulletin
Bulletin 6411 · NHTSA communication 626878 · issued Sep 27, 2001
Technical service bulletin
communication type
Steering
component
1999–2000
model years
2
vehicle entries
Official summary
Subject regarding software function id 664, steering wheel module -diagnostic trouble code, electronic control module-928c, and central electronic module-1a5b. *yd
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.