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
- 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
- Search Results: tk93vr
- Shop: Brake Controller
- Video: Curt Venturer NEXT Trailer Brake Controller w/ Custom Harness Feature Review
- Video: Curt Venturer NEXT Trailer Brake Controller w/ Custom Harness Spec Review
- Video: How to Choose a Trailer Brake Controller
- Shop: Curt Venturer NEXT Trailer Brake Controller w/ Plug-In Harness - Up to 3 Axles - Time Delayed
- Shop: Curt Venturer NEXT Trailer Brake Controller w/ Custom Harness - Up to 3 Axles - Time Delayed
- Shop: RV Covers
- Shop: Lippert Round Bubble Level for RVs and Trailers - Qty 3
- Q&A: How Can I Be Sure My Curt Triflex Brake Controller Is Working Worrectly
- Q&A: Brake Controller Install Connector that Fits 2022 Jeep Cherokee L
- Q&A: Trailer Wiring Harness & Brake Control Wiring for 2016 Jeep Grand Cherokee with/without Tow Package
- Q&A: Custom Brake Controller Wiring Harness for 2019 Jeep Grand Cherokee and Installation Location
- Q&A: Green Light On all the Time for Curt Venturer Brake Controller
- Q&A: Parts Needed to Install Redarc Tow Pro Liberty in 2021 Jeep Grand Cherokee
- Q&A: What Plug-and-Play Wiring Harness Works with the Curt Spectrum for My 2022 Jeep Grand Cherokee?
- Shop: Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
- Shop: Curt Trailer Breakaway Kit with Trickle Charger, LED Tester, and 5 Ah Lead Acid Battery - Top Load
- Shop: Redarc Tow-Pro Liberty Brake Controller w/ Universal Wiring Harness - Dash Knob - Proportional
- Shop: Curt Venturer NEXT Trailer Brake Controller w/ Custom Harness - Up to 3 Axles - Time Delayed
- Video: In-Depth Review of the Progressive Dynamics Converter Status Remote Pendant
- Shop: Roof Rack
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Search Results: trailer wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Shop: Trailer Wiring
- Video: What to Know About the Curt TriFlex NEXT Trailer Brake Controller
on Trailer Brake Controller
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.