Volvo S40 2001 — technical service bulletin
Bulletin 870018 · NHTSA communication 621856 · issued May 1, 2001
Technical service bulletin
communication type
Equipment
component
2001
model years
2
vehicle entries
Official summary
Subject regarding electronic climate control diode upgrade. *tt
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.