Troubleshooting Blue LED on Redarc Tow-Pro Liberty Brake Controller

Question

Question:

My red arc will light up blue when I press the button, but it will not calibrate by changing colors and brakes won’t work

asked by: James

0

Expert Reply:

Hey James!

The instructions for the Redarc Tow-Pro Liberty Brake Controller # RED53CR show that with the blue LED means that you'll need to check all of your connections. Have you done that yet?

expert reply by: Jon G

0

Blue LED Cause for Tow-Liberty Brake Controller
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James

9/24/2025

Yes, I checked the connections and disconnected my battery and that seemed to work. It came on and calibrated. Everything is working fine. One other thing I’m having trouble with the knob seems to be stripped out. I have to take it off to turn up or down if you could point me in the right direction to get a new knob

Jon G.

9/24/2025

@James Glad to hear you were able to get it all calibrated and such! Sounds like you're looking for the Replacement Control Knob for Redarc Tow-Pro Liberty # RED57FR. The controller does have a 2-year warranty; did it come with the stripped control knob, or was that something you think you did once you had bought it and used it?

Answer 1

While there is not a way to test the "full" scope of working properly, you can definitely ensure that it is receiving the proper power and starting the calibration process. A trailer does need to be connected in order for the LEDs to be on…

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Answer 2

I took a look at an online version of the owner's manual for your 2015 Ford Explorer and found, on page 308, that the Passenger Compartment Fuse Panel has a fuse in the 31 position that is rated for 5A and is labeled "Trailer tow brake…

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Answer 3

Hey Larry. The Redarc Liberty #RED24FR Won't light up with the brake pedal if no trailer is hooked up, or if you are sitting still. It's a proportional controller so it needs to detect movement. You really need to hook up your camper to…

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Answer 4

If your Redarc Tow-Pro Liberty Brake Controller #RED24FR doesn't have the light lit up then you likely have no power getting to the controller (see attached from manual). What you will need to do is check the black wire from the 4-wire pigtail at…

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Answer 5

Hi Zach, Without a trailer connected and the rig moving the only way to get power from to the Liberty #RED52VR to the trailer is to press in the control knob to activate the manual override. When doing this you would see 12 volts coming across the…

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Answer 6

The red light on the Redarc Tow-Pro Liberty Brake Controller #RED24FR may have different meanings. If the red light is solid when pressing the brakes or applying the manual override then it is indicating power is being sent to the trailer brakes as…

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Answer 7

Hey Camaron, Since you need to wiring in that Redarc due to a plug and play not being available for your vehicle. The wires should be the same and connect as is for the install. I have attached the instructions for you below that explain the…

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Answer 8

Redarc does not offer longer cables between the knob and the module but we've spoken with Redarc before and they have told us that you can use a standard RJ45 network cable to extend as far as needed which you'd be able to easily source…

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Answer 9

So the round 7-way is more common on heavy duty setups whereas the blade style 7-way is much more commonly used on the lighter duty RV setups. Aside from compatibility there really isn't a significant difference. You could use a 7-way round to…

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Answer 10

We recommended to repack the wheel bearings on your trailer every 12 months or 12,000 miles. There is not a specific guideline as far as actually replacing the bearings. When repacking them with grease, you will also just want to check for any damage…

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Answer 11

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 12

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Troubleshooting Blue LED on Redarc Tow-Pro Liberty Brake Controller

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