When doing replacement or upgrading on 2009 – 2018 Volkswagen Tiguan with capsule halogen headlamps HID, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 2009 – 2018 H7
High Beam Headlight 2012 – 2017 H15
2009 – 2011, 2018 H7
Front Fog Light 2009 – 2018 9006
Back Up Light 2009 – 2018 921
Brake 2009 – 2018 1156
Daytime Running Light 2012 – 2018 H15
Dome Light 2012 – 2018 194
Front Side Marker 2012 – 2018 12256
2009 – 2011 12961
Front Turn Signal 2012 – 2018 PY21W
License Plate 2009 – 2013 12844
2014 – 2018 12961
Parking Light 2012 – 2018 12961
2009 – 2011 3357NA
Rear Side Marker 2012 – 2018 12961
Rear Turn Signal 2012 – 2018 1156
2009 – 2011 7440NA
Tail Light 2009 – 2011 12961
2012 – 2018 921
Front Inner Turn Signal 2009 – 2011 3457NA
Front Outer Turn Signal 2009 – 2011 12961
Luggage Compartment 2009 – 2011 12818
2012 – 2018 6411
Glove Box 2009 – 2018 12256
Map Light 2009 – 2018 12961
Rear Reading Light 2014 – 2018 DE3423
Stepwell 2009 – 2018 12256
Low Beam Headlight 2009 – 2011 D1S
High Beam Headlight 2009 – 2011 H7
High Beam and Low Beam Headlight 2012 – 2018 D3S
Front Fog Light 2009 – 2017 9006
2018 H8
Back Up Light 2009 – 2018 921
Brake 2009 – 2018 1156
Dome Light 2012 – 2018 194
Front Side Marker 2012 – 2018 12256
2009 – 2011 12961
Front Turn Signal 2012 – 2018 PSY24NA
License Plate 2009 – 2013 12844
Parking Light 2009 – 2011 3357NA
Rear Side Marker 2012 – 2018 12961
Rear Turn Signal 2012 – 2018 1156
2009 – 2011 7440NA
Tail Light 2009 – 2011 12961
2012 – 2018 921
Front Inner Turn Signal 2009 – 2011 3457NA
Front Outer Turn Signal 2009 – 2011 12961
Luggage Compartment 2009 – 2011 12818
2012 – 2018 6411
Glove Box 2009 – 2018 12256
Map Light 2009 – 2018 12961
Rear Reading Light 2018 6418
2014 – 2017 DE3423
Stepwell 2009 – 2018 12256