Unplugging the trailer brake controller is the simplest way to disengage its
connection to electrical power and stop any current from flowing to its system.
However, if your brake controller is hardwired into the system, you must cut the
output wire between your trailer brakes and brake controller. This will also cut off power.
Check the Connections
A trailer brake system is a control unit commonly installed in various trailers. This
system allows the driver of the towing vehicle to use time-delayed frequency to
regulate their trailer’s braking system, with some versions even featuring manual
overrides or thumbwheel adjustments for output control.
However, wires connecting these components could become tangled or damaged
and cause the system to stop functioning, prompting an error message on your
dashboard. Any electrical problems should be taken care of by professionals
immediately as any further complications could be hazardous to both yourself and others.
Resolving this issue doesn’t require too much work, only requiring a few tools and
items. To begin with, locate and open up the adjustment nut of your trailer’s brakes;
its lock nut should usually be accessible with a flathead screwdriver.
Check the Wiring
Wiring between your trailer brake controller and electrical system is extremely
delicate, so if it becomes loose or disconnected it’s wise to take immediate action. In
many instances, this issue may be the result of a defective switch which should be
changed out or in other instances, connectors might require cleaning.
Unplug the brake controller, as this will stop electricity flowing to the trailer.
However, if your brake controller is hardwired to your vehicle and inaccessible from
unplugging it – an alternative approach would be cutting the output wire between
brake controller and vehicle; this will disable brake controller as well as turn off error
message and allow safe driving of truck. However, should this continue occurring it
would be wiser to consult a professional.
Check the Battery
A small battery sits between the trailer brake controller and electrical system,
providing power when it receives signals from either manual switches or tow vehicle
brake light signals. From there, power is passed onto each wheel hub or axle
assembly where an electromagnet creates friction against two metal plates to slow
and eventually stop its motion – creating the necessary friction needed for slowing or stopping.
Problems with the battery could also cause brake controller to malfunction and
display the “Service Trailer Bra System Warning Message” on your truck’s
dashboard. This may occur if your battery levels drop low or there are issues in the
electrical system that impact its functioning.
When your truck’s dashboard displays a service trailer brake system warning
message, it is critical that this issue be taken care of immediately as both its safety
and that of your trailer depend on it. A qualified auto technician can help resolve the
problem swiftly and efficiently.
Check the Brakes
Your trailer and vehicle brakes work together to ensure you can stop quickly.
However, maintaining this system is also crucial to avoid damaging either one of
them; if your dashboard displays “Service Trailer Brake System” warning messages
then this indicates one or more brakes have malfunctioned and not been functioning correctly.
When your truck’s service trailer brake system warning message displays, there may
be an issue with its ITBC (integrated trailer brake control module). This electrical
component helps the brake controller communicate with your trailer; when not
functioning correctly, its wires that connect it to your vehicle’s electrical system
could become frayed and frayed over time.
In such an instance, your brakes won’t receive any electric current and won’t
function as intended. To address this issue and restore their full functionality, it will
be necessary to replace their fuse.