BMW Z4 2002–2004 — technical service bulletin
Bulletin 121104 · NHTSA communication 10012782 · issued Feb 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002–2004
model years
3
vehicle entries
Official summary
Retrofit the power supply cable for the thermal oil level sensor. *eh
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.