Hyundai Sonata Courtesy Bulb Size

The Hyundai Sonata courtesy light utilizes bulb sizes 12961, DE3423, 168, and DE3022 depending on the specific production period. Available information covers a time range from 1989 through 2019.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2019	12961
2006-2010	DE3423
2002-2005	168
1989-1998	DE3022

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022

Other Locations

Additional Notes

The Hyundai Sonata courtesy bulb specifications reference three distinct bulb types across model years: the festoon-style DE3022 and DE3423, the wedge-style 168, and the Philips-specific 12961.
The DE3022 is an ANSI-standard festoon bulb with a 31mm length and end-cap contacts, operating at 12V. It is the most frequently specified courtesy bulb across the Sonata lineup, covering model years 1989-1998.
The DE3423 is also an ANSI-standard festoon bulb with end-cap contacts, but its 41mm length makes it physically longer than the DE3022. The two festoon types are not interchangeable due to this difference in length.
The 168 is an ANSI-standard miniature wedge bulb (T10) rated at 12V and 4.9W, specified for the 2002-2005 Sonata. Wedge bulbs use a plastic wedge base rather than end-cap contacts, making them incompatible with festoon sockets.
The 12961 is a Philips part number rather than an ANSI designation. It is a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W, and is specified for the 2019 Sonata.
Although both the 168 and the 12961 share the T10 wedge form factor and operate at 12V, their wattage ratings differ slightly at 4.9W and 5W respectively. The 12961 also carries a manufacturer-specific designation rather than a universal ANSI code.
The shift from the DE3022 festoon type (1989-1998) to the 168 wedge type (2002-2005) and then to the DE3423 festoon type (2006-2010) reflects distinct socket configurations across different Sonata generations, meaning bulbs from one group are not suitable for sockets designed for another.
All four bulb types in the Sonata courtesy specifications operate on a 12V electrical system, which is standard for automotive applications.