Will Computer Flashing Be Required For 2021 Jeep Grand Cherokee Overland Installing Brake Controller
Updated 11/03/2025 | Published 01/03/2025
Products Featured in This Question
Question:
I have a 2021 Jeep Gran Cherokee overland, it is prewired for a brake controller. I am looking at the curt c28sv brake controller. Do I need to have the computer flashed for this install?
asked by: Ed K
Expert Reply:
Hi Ed; there will be no need to have the computer flashed to install a brake controller like the # C28SV. You will plug it into the tow port and everything should work as intended. However, I do have a different recommendation for a brake controller. Instead of the Curt Spectrum I recommend the Redarc Tow-Pro Liberty # RED24FR.
The Liberty is more reliable when compared to the Curt and it also has a smaller control knob that will look better in your Jeep. The design is similar so you will still mount the main unit behind the dash so the control knob will be the only thing visible in the cab.
Redarc doesn't have a wiring harness specific to your vehicle so you will need the # C51446 along with the Redarc Tow-Pro Wiring Adapter for Curt Brake Controller Harness # 331-TPH-019 for a plug and play installation. This setup will also save you a little money when compared to the Spectrum.
(click to enlarge)
Product Page this Question was Asked From
Curt Spectrum Brake Controller w/ Custom Harness - Dash Mounted Knob - Up to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Plug-In
- Dash-Mounted Knob
- Behind-Dash
- Up to 4 Axles
- Indicator Lights
- Multiple Trailers
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Comparing the Curt Spectrum Brake Controller to Redarc Tow-Pro Elite
- Q&A: Where is The Connector For Installing a Trailer Brake Controller Located On a 2023 Hyundai Santa Fe?
- Q&A: Tekonsha Brake Controller Adapter for a 2025 Ram 1500
- Q&A: Brake Controller Plug Location on 2021 Jeep Grand Cherokee
- Q&A: Troubleshooting Curt Spectrum Brake Controller - No Lights On Control Knob
- Q&A: Brake Controller Installation In 2020 Chrysler Pacifica
- Q&A: Will the Weigh Safe Universal Clamshell Hitch Adapter Reduce a Hitch's Capacity?
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: How Does a Trailer Hitch Coupler Work?
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Trailer Tire Sizing
- Article: Brake Controller Installation: Starting from Scratch
- Article: Brake Controller Installation on a Ford Full-Size Van
Robin H.
11/3/2025
Hey Ed, how did things go with the brake controller setup on your Grand Cherokee? Did the Redarc Tow-Pro Liberty end up working well for you? Your update could make it easier for others choosing between these controllers.