Freightliner Coronado Brake Bulb Size

The Freightliner Coronado brake light requires a 1157 bulb size for proper installation and function within the rear lighting assembly. Data provided for the specific component covers the period from 2012 through 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
2012-2018	1157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157

Other Locations

Additional Notes

The 1157 is the specified brake bulb size for the Freightliner Coronado across the 2012-2018 model years.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope to serve two distinct lighting functions from one socket.
It operates on a 12-volt electrical system and carries a wattage rating of 21W on the high filament and 5W on the low filament, corresponding to its brake/tail light roles respectively.
The 1157 uses a BAY15d bayonet base, which features two offset pins at different heights to prevent incorrect insertion and ensure proper filament alignment within the socket.
The bulb conforms to ANSI standards and is recognized across both the United States and Canada, reflecting a standardized specification shared between the two markets.
Because the BAY15d base uses offset pins, it is not interchangeable with single-filament bayonet bulbs such as the 1156, which uses a BA15s base with a single pin height.