This part is listed by BMW as BMW part number 61319291691 (61-31-9-291-691) and is described as Genuine BMW Ignition Start/Stop Button for F25 X3 (2011-2017) & F26 X4 (2015-2018).
Not for cars with auto start/stop function.
Supersedes the following obsolete BMW part numbers:
61319225237 (61-31-9-225-237)
61319263431 (61-31-9-263-431)
61319229585 (61-31-9-229-585)
BMW Fitments:
X3 Series
F25 X3 (2011-2017) > X3 sDrive28i
F25 X3 (2011-2017) > X3 xDrive28d Diesel
F25 X3 (2011-2017) > X3 xDrive28i
F25 X3 (2011-2017) > X3 xDrive35i
X4 Series
F26 X4 (2015-2018) > X4 28i xDrive
F26 X4 (2015-2018) > X4 35i xDrive
F26 X4 (2015-2018) > X4 M40i xDrive
