BMW 640I 2012–2016 — technical service bulletin
Bulletin B510116 · NHTSA communication 10151009 · issued Jan 1, 2016
Technical service bulletin
communication type
Visibility
component
2012–2016
model years
14
vehicle entries
Official summary
"Heated rear window control module requires a software update. The electrical load of the heated rear window may cause the fuse to overheat and fail. AFFECTED VEHICLES Vehicles which require this Service Action to be completed will show it as ""Open"" when checked either in the ""Service Menu"" of DCSnet (Dealer Communication System) or with the Key Reader."
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.