When doing replacement or upgrading on 2004 – 2018 Volkswagen Touareg capsule halogen headlamps HID LED Lights Tail with without, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 2004 – 2010 H7
High Beam Headlight 2004 – 2010 H9
Front Fog Light 2004 – 2010 H11
Back Up Light 2004 – 2010 H21W
Brake 2004 – 2010 1156
Dome Light 2004 – 2007 578
2008 – 2010 6411
Front Side Marker 2008 – 2010 12396NA
2004 – 2007 12961
Front Turn Signal 2008 – 2010 3457NA
2004 – 2007 PY21W
License Plate 2004 – 2010 12844
Parking Light 2004 – 2010 12396NA
Rear Turn Signal 2004 – 2010 PY21W
Tail Light 2004 – 2010 P21/4W
Luggage Compartment 2004 – 2010 6411
Courtesy 2004 – 2010 12961
Glove Box 2004 – 2010 12961
Interior Door 2004 – 2010 12256
Map Light 2004 – 2010 12961
Low Beam Headlight 2004 – 2010 D1S
High Beam Headlight 2004 – 2010 H7
Front Fog Light 2004 – 2010 H11
Back Up Light 2004 – 2010 H21W
Brake 2004 – 2010 1156
Dome Light 2004 – 2010 578
Front Side Marker 2008 – 2010 12396NA
2004 – 2007 12961
Front Turn Signal 2008 – 2010 1156
2004 – 2007 PY21W
License Plate 2004 – 2010 12844
Parking Light 2004 – 2010 12396NA
Rear Turn Signal 2004 – 2010 PY21W
Tail Light 2004 – 2010 P21/4W
Luggage Compartment 2004 – 2010 6411
Courtesy 2004 – 2010 12961
Glove Box 2004 – 2010 12961
Interior Door 2004 – 2010 12256
Map Light 2004 – 2010 12961
High Beam and Low Beam Headlight 2011 – 2014 D3S
Front Fog Light 2011 – 2014 9006
Back Up Light 2011 – 2014 921
Brake 2011 – 2014 1156
Dome Light 2011 – 2014 194
Front Turn Signal 2011 – 2014 PSY24WSV
License Plate 2011 – 2014 194
Rear Turn Signal 2011 – 2014 PY21W
Tail Light 2011 – 2012 12821
2013 – 2014 12961
Luggage Compartment 2011 – 2014 6411
Courtesy 2011 – 2012 12256
Glove Box 2011 – 2012 12961
2013 – 2014 DE3175
Interior Door 2011 – 2014 194
Map Light 2011 – 2014 12961
Stepwell 2011 – 2014 12961
High Beam and Low Beam Headlight 2015 – 2018 D3S
Front Fog Light 2015 – 2018 H8/H11/H16
Back Up Light 2015 – 2018 921
Front Turn Signal 2015 – 2018 PWY24WSVHTR
Parking Light 2015 – 2018 194
Rear Turn Signal 2015 – 2018 PY21W
Luggage Compartment 2015 – 2018 6411
Glove Box 2015, 2017 12818
2016, 2018 DE3175
Interior Door 2015 – 2018 194
Stepwell 2015 – 2018 12961