Freightliner Coronado Back Up Light Bulb Size

The Freightliner Coronado back up light uses bulb size 1156 for the rear illumination system. Available data covers the period from 2012 through 2018 for the specified vehicle components.

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	US Type	EU Type	Shop
2012-2018	1156	P21W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156	Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W	Check Price

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Additional Notes

The Freightliner Coronado uses the 1156 bulb for its back up light across the 2012-2018 model years.
The 1156 is an ANSI-standardized bulb type, meaning its physical and electrical specifications are defined by a recognized industry standard used throughout the United States and Canada.
The bulb operates on a 12-volt electrical system and draws 21 watts, which is consistent with standard incandescent reverse light applications in commercial vehicles.
The 1156 uses a BA15s bayonet base, a single-contact mount where the "s" denotes a single pin, distinguishing it from the dual-contact BA15d variant used in other applications.
Because the 1156 is a single-filament bulb, it serves one lighting function only, which is why it is suited to a dedicated reverse light rather than a combination stop/tail lamp position.
The BA15s base type is not interchangeable with visually similar bayonet bases such as the BA15d, as the pin configuration differs and incorrect substitution can result in improper fitment or electrical contact failure.