Volkswagen Touareg Turn Signal Bulb Size

Additional Notes

• The Volkswagen Touareg front turn signal uses six distinct bulb types across the 2004-2017 model years: PY21W, 12496, 1156NA, 3457NA, 12180, and 12174SV.
• The 12174SV is a Philips SilverVision halogen bulb with an enhanced coating, rated at 12V. It serves as the front turn signal bulb in the Volkswagen Touareg for the 2015-2017 model years.
• The 12180 is a Philips 12V halogen bulb designated for specialty applications. It is specified for the Volkswagen Touareg front turn signal position across the 2011-2014 model years.
• The 2008-2010 Volkswagen Touareg front turn signal fitment splits into two separate bulb types depending on headlamp configuration. Vehicles equipped with HID headlamps use the 1156NA, while those with halogen capsule headlamps use the 3457NA.
• The 1156NA and 3457NA are both ANSI-standard natural amber bulbs rated at 12V, but they are not interchangeable. The 1156NA is a single-filament bulb with a BA15s bayonet base rated at 21W, whereas the 3457NA is a dual-filament T25 wedge bulb rated at 27W/7W.
• The PY21W follows the ECE standard used in Europe and worldwide. It is a single-filament amber bulb with a BAU15s bayonet base, rated at 12V and 21W. Its BAU15s base has offset pins, which prevents it from being seated in sockets designed for the BA15s base used by the 1156NA.
• The 12496 is a Philips/Osram 12V halogen bulb for specialty applications. It appears in both the front and rear turn signal positions of the Touareg across several model years, including the front position in 2006-2007 and the rear position in 2006-2007, 2010, 2013, and 2016-2017.
• The rear turn signal of the Volkswagen Touareg alternates between the PY21W and 12496 across multiple model years, meaning the same model year does not necessarily carry the same bulb type front and rear. For example, the 2015-2016 rear position uses the PY21W and 12496 respectively, while the front position for those years uses the 12174SV.
• The PY21W is specified for the Touareg rear turn signal in the 2004-2005, 2008-2009, 2011-2012, and 2014-2015 model years, making it one of the most recurrent rear turn signal bulbs across the model's history in these specifications.
• Because the 12174SV, 12180, and 12496 are all manufacturer part numbers rather than universal ANSI or ECE designations, cross-referencing with Philips or Osram compatibility data is necessary to confirm equivalent substitutes.