Mercedes-Benz GLE63 AMG S Map Light Bulb Size

The Mercedes-Benz GLE63 AMG S map light requires a bulb size of 12961 for the interior lighting system. Data for the specified component covers the range from 2016 to 2018.

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
2016-2018	12961 (Rear)

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The Mercedes-Benz GLE63 AMG S uses the 12961 bulb for the rear map light across the 2016-2018 model years.
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 designation refers to a tubular bulb with a nominal width of 10/8 of an inch, a standard sizing convention in miniature automotive lighting.
The W2.1x9.5d base type is a wedge-style connector, meaning the bulb is held in place by tension from the socket rather than by a bayonet or screw mechanism.
The "W2.1x9.5d" base code specifies a wedge base with a 2.1mm wire contact width and a 9.5mm insertion depth, which determines physical socket compatibility.
At 5 watts and 12 volts, the 12961 draws approximately 0.42 amperes, consistent with low-current interior lighting circuits.
The rear map light position is distinct from front map or dome lighting, and substituting a bulb intended for a different position may result in fitment or electrical incompatibility.
While the T10 wedge base is a widely shared form factor across many vehicle makes, the 12961 Philips part number denotes a specific wattage and voltage rating that must be matched for correct operation in this application.