Troubleshooting Roadmaster Invisibrake That Stopped Working
Published 04/01/2022 >
Products Featured in This Question
Question:
My invisibrake quit working. The red light on the dash of the Motorhome stays on all the time and the warning whistle blows non- stop. I had to cut the line to the whistle to stop the noise.
asked by: Darrell H
Expert Reply:
Sorry to hear about this problem, lets trouble shoot it below:
**Roadmaster InvisiBrake Supplemental Braking System # RM-8700.
**Replacement Pulley for Roadmaster InvisBrake Supplemental Braking System - Qty 1 # RM-452104-10.
This is going to be a cable issue or a communication problem with the waring device.
If the cable pulling on the brake pedal is to tight it will not let the pedal return to its zero position.
• Readjust the brake pedal clamp. As you do this make sure that the cable is not bound or obstructed, check it for damage.
• If you notice incorrect cable adjustment — refer to the installation instructions for proper adjustment.
• Check the pulley for obstructions or damage.
If you have the wireless dashboard warning lights makes sure the transmitter is not in sleep mode and has enough battery charger.
If you have a hardwired warning system then you need to check the cable for shorts or damage.
Product Page this Question was Asked From
Roadmaster InvisiBrake Flat Tow Brake System - Preset
- Flat Tow Brake System
- Brake Systems
- Pre-Set System
- One-Time Setup
- Vehicle Battery
- Fixed System
- Power Assist Brake Compatible
- Air Brakes
- Hydraulic Brakes
- Indicator Lights
- Roadmaster
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Does Roadmaster Invisibrake Fit 2024 Jeep Rubicon
- Q&A: Will Curt RVibrake Shadow 2 Fit 2026 Ford Maverick Hybrid
- Q&A: Recommended Flat Towing Set Up for a 2026 Ford Maverick Hybrid
- Article: Flat Towing Package for 2007-2018 JK Jeep Wrangler and Wrangler Unlimited
- Article: Best Vehicles to Flat Tow Behind an RV
- Q&A: Flat Tow Setup for 2012 Jeep Grand Cherokee Overland
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Recommended Parts for Flat Towing a 2025 Ford Maverick
- Article: Must-Have Flat Towing Components
- Q&A: Best Flat Tow Setup for 2026 Ford Maverick Hybrid
- Q&A: Flat Tow Setup for 2026 Ford Maverick AWD Hybrid
- Article: Flat Towing Package for 2012-2014 Honda CR-V
- Article: Trailer Wiring Diagrams
- Article: Flat Towing Package for 2020 Jeep Wrangler


