Hyundai Tucson Map Light Bulb Size

Additional Notes

• The 904 bulb is an ANSI-standard miniature wedge type in the T10 form factor, rated at 12V and 8W. It is the most frequently specified map light bulb across the Hyundai Tucson lineup, appearing in model years 2005-2009, 2019, and 2021-2024, as well as in sunroof-equipped trims from 2010-2015.
• The 12961 is a Philips-designated T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. Although it shares the T10 form factor with the 904, its wattage is lower at 5W compared to the 904's 8W, which represents a meaningful difference in power draw despite the physical similarity.
• The DE3175 is a festoon-type bulb with a 31mm length and end-cap contacts, rated at 12V. Unlike the wedge-type 904 and 12961, it uses a physically distinct mounting style and is not interchangeable with either wedge bulb.
• For the Hyundai Tucson model years 2010-2014, the front map light bulb specification splits by trim configuration: vehicles with a sunroof require the 904, while those without a sunroof require the 12961. These two bulbs are not listed as interchangeable for those years.
• The 2016 Tucson is the only model year in the specifications that lists both a front and a rear map light position, with the 12961 assigned to the front and the DE3175 assigned to the rear.
• The 2015 Tucson lists the 12961 as a general fitment and separately lists the 904 for front positions in sunroof-equipped vehicles, indicating that trim configuration remains a relevant factor for that year.
• The 2005 Tucson entry carries a production date range, specifying the 904 for vehicles built from September 1, 2004 through July 8, 2005, which reflects a mid-cycle production constraint rather than a full-year blanket fitment.