The Mercedes-Benz E400 uses H7 bulbs for both high beam and low beam headlight applications, with this size remaining consistent across the model line. The replacement chart covers 2013 through 2016 production years and documents bulb size specifications for headlight configurations.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H7 is a single-filament halogen bulb operating at 12 volts and 55 watts, fitted with a PX26d base, and built to ECE standards for use in Europe and worldwide markets, with approval also extended to the United States and Japan.
The Mercedes-Benz E400 uses the H7 bulb size for both high beam and low beam headlights across the 2013-2016 model years.
The single-filament design of the H7 means each bulb serves only one lighting function, which is why separate H7 units are required for the high beam and low beam positions rather than a single dual-filament bulb.
The PX26d base is a keyed, single-pin connector specific to H7 bulbs, and its design prevents installation of incompatible bulb types into the same socket.
For the 2013 low beam position, the H7 fitment applies only to vehicles without Xenon headlights and without the Intelligent Light System (ILS). Vehicles equipped with either of those systems follow a different specification for that year and position.