Hyundai Sonata Stepwell Bulb Size

Additional Notes

• The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, operating at 12 volts and rated at 5 watts.
• The T10 bulb uses a W2.1x9.5d base, a pinless wedge-style connection where the glass envelope itself acts as the retention mechanism within the socket.
• The Hyundai Sonata stepwell position uses the 12961 bulb across model years 1999-2001, 2005-2010, 2016, and 2017, with the same bulb size applying consistently throughout those years.
• The 2010 model year carries a production cutoff of January 23, 2010, meaning vehicles built after that date fall outside this specification entry.
• The 2008 model year carries a production cutoff of February 1, 2008, similarly limiting the applicability of the 12961 specification to vehicles produced up to that date.
• The 2005 model year entry specifies a start date of March 1, 2005, indicating the 12961 fitment applies only to vehicles produced from that date onward within that model year.
• The 2001 model year carries a production cutoff of June 1, 2001, restricting the 12961 specification to vehicles built before that date.
• At 5 watts, the 12961 is a low-output bulb suited to courtesy lighting functions such as stepwell illumination, where sustained high brightness is not a design requirement.