Skip the auto shop - Our mechanics make house calls

Q: Trailer brake not working

asked by on

The built in trailer brake on my truck is not working.

A: Hello. If the trailer brake system is not w...

Hello. If the trailer brake system is not working, then it may be a blown fuse or it can be a trailer plug problem. This truck has a history of the terminals in the plug breaking and causing similar issues. As a mechanic, I would check the fuse first for the trailer brake. If it is blown, then it should be replaced and checked to see if it happens again when the trailer is hooked up. If it is, then the trailer is causing the fuse to blow. The best way to diagnose this further is with a voltage meter to see if there are intermittent connections at the trailer plug. If you need further assistance, I recommend you have a mechanic, like one from YourMechanic, inspect the electrical components and repair any damaged parts.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car turned itself off, now Check Engine Light is on

I'm guessing the Battery and Oil Lights came on because the ignition was in the run position but the engine died. This is normal. What caused the vehicle to stall is another question. A vehicle that stalls and then...

Q: What Is Going On?

The only way to be certain is to have the cooling system inspected. Head gaskets can leak externally as well as internally. If they are leaking internally, generally you will see a whiteish smoke from the tail pipes. Running hot...

Q: Car does not move and Idles constantly with the check engine light on.

Hi there. It seems to be either a transmission issue or the traction control is engaged. The traction control is designed to apply the brakes when a wheel is spinning out of control. However, if the traction control was to...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...