Note: Always refer to the exact schematic printed on your specific vehicle's fuse panel cover, as running changes mid-production in 2019 altered some slot allocations. Step-by-Step Trailer Light Troubleshooting

In the 2019 "New Cascadia" (P4 model), Freightliner moved and modernized the electrical system: The Main Power Distribution Module (PDM):

Plug the cord in and gently wiggle both ends. If the lights flicker or a fuse pops during the wiggle, the plug or the socket receptacle is damaged.

Lift the panel to expose the massive array of fuses, circuit breakers, and relays. Understanding the SAM Chassis Module

Here are the known specific locations based on official Freightliner technical bulletins:

Here are some common fuse locations for the 2019 Freightliner Cascadia:

If you specifically have issues with trailer ABS power, check fuses F43, F25, and F26 in the passenger-side fuse box. Power Feed:

2019 Freightliner Cascadia Trailer Light Fuse Location [new] Jun 2026

Note: Always refer to the exact schematic printed on your specific vehicle's fuse panel cover, as running changes mid-production in 2019 altered some slot allocations. Step-by-Step Trailer Light Troubleshooting

In the 2019 "New Cascadia" (P4 model), Freightliner moved and modernized the electrical system: The Main Power Distribution Module (PDM): 2019 freightliner cascadia trailer light fuse location

Plug the cord in and gently wiggle both ends. If the lights flicker or a fuse pops during the wiggle, the plug or the socket receptacle is damaged. Note: Always refer to the exact schematic printed

Lift the panel to expose the massive array of fuses, circuit breakers, and relays. Understanding the SAM Chassis Module Lift the panel to expose the massive array

Here are the known specific locations based on official Freightliner technical bulletins:

Here are some common fuse locations for the 2019 Freightliner Cascadia:

If you specifically have issues with trailer ABS power, check fuses F43, F25, and F26 in the passenger-side fuse box. Power Feed: