Electric trailer brakes fail quietly. Your truck's brakes will cover for weak trailer brakes on every normal stop - right up until the one stop that isn't normal: a deer at dusk, a combine pulling onto the highway, a grade with a headwind. Run these six checks before towing season, and get a real brake service on the schedule if anything's off.
1. Do the manual-override test
Rolling slowly on gravel, squeeze the brake controller's manual lever with your foot off the truck brakes. You should feel the trailer clearly drag you down. Barely anything? Your brakes are along for the ride, not working.
2. Check the breakaway system
That little cable and pin on your tongue is the system that slams the trailer brakes on if it ever separates from the truck. It runs off the trailer's battery - a dead battery means a dead breakaway. Test the battery, and confirm the switch actually applies the brakes when the pin is pulled.
3. Look at your controller settings
A properly set gain means the trailer brakes share the work without locking up. If you've changed trucks, changed loads, or never set it at all, set it: on a quiet road at about 25 mph, adjust gain until the trailer brakes almost lock on manual override, then back off slightly.
4. Listen and feel while towing
Grinding, squealing, a trailer that shoves the truck on stops, one hot hub after a drive, or a burning smell at the fuel stop - all of it means service, now. A hub too hot to touch can be a dragging brake *or* a failing bearing; both end badly at highway speed.
5. Check the wiring at the plug
Most "my trailer brakes quit" calls trace to the 7-way connector - corroded pins, a broken ground, or a chewed wire. Look for green corrosion and loose pins. Out here, mice do more brake damage than miles do.
6. Know what's inside those drums
Magnets, shoes, springs, and adjusters wear together, and nobody sees them without pulling the drums. If your camper has crossed a few seasons - or sat for a few - a proper inspection means drums off: measure the magnets and shoes, repack or replace bearings, check seals, adjust everything to spec.
We service brakes where your camper is parked
Brake work is a great mobile call - no towing a rig with suspect brakes to town. Camper Care services trailer brakes, bearings, and brake wiring within about 100 miles of Roscoe, or at our shop. Smart timing: have brakes checked at spring de-winterizing, before the first trip.
Trailer brake FAQ
How often should trailer brakes be serviced? A drums-off inspection at least annually or every ~12,000 towing miles, and always after long storage.
My brakes work but the camper sways - same problem? Different system (weight distribution and sway control), but we can look at both in one visit.
Do small single-axle campers really need brake service? If it has brakes, they need to work. Loaded campers are heavier than people think.