BMW E39 2001 — technical service bulletin
Bulletin 651201 · NHTSA communication 628703 · issued Jan 1, 2002
Technical service bulletin
communication type
Equipment
component
2001
model years
2
vehicle entries
Official summary
On some parked vehicles, the alpine cd53 radio causes the bus to wake up at ambient temperatures below 40f, the battery could also become discharged. *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.