Trailer Battery Charging
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For vehicles equipped with push-button start, the trailer battery charging output is disabled when the drivers door is ajar.
The TRM provides voltage to the trailer tow connector for trailer battery charging when all the Following are true:
- the TRM detects that a trailer is connected
- the ignition is on and engine is running
- a brake pedal application has been detected in the present ignition cycle
- the BCM load shed strategy is not active (a message will be displayed in the instrument cluster, such as "Low Battery Features Temporarily Turned Off" or "Turn Power Off To Save Battery", to indicate that BCM load shed strategy is active)
The TRM directly (no relay) supplies fuse protected voltage for trailer battery charging.