BMW X5 2014–2017 — technical service bulletin
Bulletin B640415 · NHTSA communication 10146963 · issued Nov 1, 2016
Technical service bulletin
communication type
Seats
component
2014–2017
model years
4
vehicle entries
Official summary
"Third Row of Seats Blower is Inoperative. The blower in the third row of seats is not working and the fault code ""E70C32 - AC-LIN: Heating in third row of seats is not responding"" has been entered in the IHKA (Integrated Heating and Airconditioning, Automatic) control unit. CAUSE LIN BUS short or open circuit in wiring or connectors Blower motor, micro switch defective Control unit, A/C, for 3rd seat row defective"
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.