Troubleshooting Curt Triflex Brake Controller that Stopped Working with Brakes

Question

Question:

I have a Curt Triflex controller on my 2014 Silverado, has worked with no problems, purchased a 2016 enclosed trailer and controller worked for a short period of time, now changes from a single dot to two dots upon plugging trailer in, stepping on brake now has no readout or effect on brakes, if you use the manual slide brakes are applied, any ideas on what is happening Thanks

asked by: Bob H

0

Expert Reply:

First thing to check is to see if your truck's third brake light is still working when you hit the brakes. When the fuse for that circuit goes on GM trucks like your 2014 model it will prevent the brake controller from activating when the brakes are applied.

Next check to see if there's voltage on the red wire of the brake controller when the brakes are applied. If so, and the controller still won't activate with the pedal it has an internal problem and would need to be replaced. Curt controllers are somewhat known for having internal problems easily so this would not be a total shock to me.

For a brake controller I would recommend the Prodigy P3 Brake Controller part # 90195. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of braking the tow vehicle is applying and applies a proportionate amount to the trailer brakes. This will be the last brake controller you buy. It can easily be transferred to future vehicles as well.

expert reply by: Jameson C

0

Scott

5/2/2020

I have a 2010 Tundra towing our stock trailer and dump trailer. Both are double axle and both give me the same problem only when I tow them with the Tundra. Other vehicles no problem. When I apply the brakes the trailer brakes come on full bore very quickly and then release after 10 seconds. This can create quite a smoke show at any decent speed which is unwanted. It flashes CC, rC, dC and then the double .. The stupid thing is it just started doing this in December. Last year when I used the trailer with the Tundra things were great. Is the wiring bad or maybe the controller ?Any help is most appreciated. Thx

Reply

Chris R.

5/5/2020

We at least know the issue is somewhere on the Tundra since the trailers work fine with other trucks. I would start by inspecting the Tundra's 7-Way connector, just to be sure there isn't any debris or corrosion built up insides the pins that might be causing a short (cleaning out as needed). Then turn your attention to the brake controller's wiring - ensure everything is still securely connected and that there aren't any pinched or frayed portions of wiring. If all of this looks good, there's likely an internal fault on the controller that requires a replacement.

Reply

Answer 1

The Trailer Valet XL Trailer Dolly #TVXL2 that you referenced only touches the trailer it is installed on at the coupler so a weight distribution system would not interfere at all. When this dolly is being used the only thing that the trailer would…

view full answer...

Answer 2

The blue wire coming from the brake controller to the trailer brakes is the brake power output wire used to tell the trailer to apply the brakes once given the response from the brake controller. Therefore, you should not have a constant charge to…

view full answer...

Answer 3

Yes, the Air Distribution Box w/ Wall-Mounted Thermostat for Advent Air RV Air Conditioners #ACRG15 is what you need for your application. This includes a new thermostat as well. According to my research all of the wiring for your current thermostat…

view full answer...

Answer 4

The only way you can use the Air Distribution Box w/ Wall-Mounted Thermostat #ACRG15 on your 2008 Palomino Puma 27DSQ would be to replace your Dometic AC with a Advent Air RV Air Conditioner #ACM135. This may be the best route to go if your air…

view full answer...

Answer 5

Hi Cameron, I've gone ahead and added a photo of a cut out from the instructions for you showing the wiring of the Advent Air Distribution Box #ACRG15. The instructions are also linked below if you'd like to take a look.

view full answer...

Answer 6

That has to be a brake controller issue. Sounds like the controller is backfeeding the stoplight circuit it taps into as a signal wire with voltage which is then activating your brake lights. When this happens the brake controller is in need of being…

view full answer...

Answer 7

I recommend starting by checking both the tow vehicle side and trailer side connectors. Check to make sure that they are free of any debris or corrosion, cleaning out as needed. The D.C. message you are getting on the Curt Triflex #C24VV indicates no…

view full answer...

Answer 8

The install harness part #C51436 is the correct harness to install the Curt Triflex part #C24VV in your 2018 Ford F-150. What I would do is verify the controller wiring has power on the black wire as this is the power circuit for it. You'd want…

view full answer...

Answer 9

The Curt Triflex #C24VV is somewhat known for having internal bugs that make it act odd at times. The simple solution is to unplug the controller for a few seconds and then plug it back. This typically clears out the bugs and gets it working again.…

view full answer...

Answer 10

When we install weight distribution systems like the Pro Series Weight Distribution System #PS49901 that you referenced we set aside 4 hours to complete the job. We typically finish the job before the 4 hours is up, but for a first-time installer 4…

view full answer...

Answer 11

Hello Dan, I can definitely help with this. It is completely normal for the Curt TriFlex brake Controller #C24VV to show the current gain setting when the brakes are applied, or when the manual override is pressed. It sounds like you have the gain…

view full answer...

Answer 12

The L. display should show up on the Curt TriFlex brake controller, #C24VV, when it is plugged in. When you are installing the controller, the trailer should not be connected. The lever or button on the left side of the controller is the sensitivity…

view full answer...

Troubleshooting Curt Triflex Brake Controller that Stopped Working with Brakes

Products Featured in This Question

Product Page this Question was Asked From

Featured Help Information

Instructions

Continue Researching