Redarc Brake Controller Blue Light Stays On When Trailer Is Connected
Updated 10/27/2025 | Published 03/18/2025 >
Question:
I have the plug and play liberty on my Tacoma. With my trailer connected a dim blue light stays on. Looking through the window. Is this normal?
asked by: John
0
Expert Reply:
Hello John, thanks for reaching out. The blue light on your Redarc brake controller indicates the controller is calibrated and is in proportional mode. It would be normal for this to stay on with the trailer connected. If it were flashing any color other than blue or green that could indicate a problem. The solid blue light is normal though.
expert reply by:
Jesse M
0
Product Page this Question was Asked From
Redarc Tow-Pro Elite Brake Controller - Dash Knob - Off-Road Mode - Up to 3 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Splice-In
- Dash-Mounted Knob
- Behind-Dash
- Up to 3 Axles
- Indicator Lights
- Single Trailer Only
- Redarc
more information >
Featured Help Information
Instructions
Continue Researching
- Search Results: tow pro elite
- Shop: EZ Lube Grease Caps with 1.99" OD - Fits 7" and 10" x 1-1/4" Dexter Hubs - Qty 2
- Shop: Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob
- Q&A: How Does a Brake Controller Know when a Trailer is Connected
- Q&A: Why Does My Brake Controller Light Stay On After Vehicle is Turned Off
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Brake Controller Installation: Starting from Scratch
- Q&A: What is Difference Between Redarc Tow Pro Liberty and Elite
- Article: 2005-Current Volkswagen Touareg, Audi, or Porsche Cayenne
- Article: Trailer Wiring Diagrams
- Q&A: Recommended Plug and Play Brake Controller Harness for a 2024 MB Sprinter 2500 w/ the Tow Package
- Q&A: Differences Between the Redarc Tow Pro Trail and Elite
- Article: Redarc Tow-Pro Elite Full Review
- Q&A: Recommended Complete Towing Setup for 2017 Toyota Highlander SLE AWD for 3,850 lb Trailer
- Q&A: Comparing the Curt Spectrum Brake Controller to Redarc Tow-Pro Elite
- Article: Installing an Electric Brake Controller on 2007-2013 GM Full-Size Truck or 2007-Present GM SUV


Jesse M.
10/27/2025
Hey John, how is the Redarc brake controller working now that you know the solid blue light is normal with the trailer connected? Your update could make it easier for the next person wondering about the same light behavior.