Troubleshooting Tekonsha Prodigy P2 Brake Controller Staying Lit and Numbers Flashing
Question:
Have had this brake controller for years with no problems but recently returned from a trip with a trailer and after 2 days noticed the controller still illuminated and the numbers were changing as if I was adjusting the settings and the battery was being drawn down even though no trailer was plugged in. The batteries are less than 6 months old as well. Does it just need to be reset? I am unable to get to the connector in the back of the unit.
asked by: John W
Expert Reply:
It does sound like your Tekonsha Prodigy P2 Brake Controller # 90885 is just in need of a manual reset. The only way to really do this though is to unplug it from power by removing the plug at the back of the controller itself or unplugging from a factory port behind the truck's dash (if it was equipped with one). If you truly aren't able to access the plug then your only option will be to sever the black 12V wire from the back of the controller to cut off power.
Once you are able to unplug the unit let it sit for a few minutes before plugging it back in (or repairing/re-connecting the power wire). This should reset it so that it behaves like normal again.
If the problems persist for some reason please let me know.

Product Page this Question was Asked From
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LED Display
- Up to 360 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional
- Shop: Brake Controller
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Shop: TorkLift Locking FastGun Apex Truck Camper Turnbuckles for ApexAnchors - Qty 4 - PREORDER
- Shop: Brophy Stake Pocket Mounted Camper Tie-Downs - Bed Mount - Qty 4
- Shop: Brophy Basic Turnbuckles w/ Hardware for Camper Tie-Downs - 3,000 lbs - Qty 4
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: How to Choose a Trailer Brake Controller
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Search Results: brake controller
- Q&A: Recommended Brake Controller to 2024 Nissan Frontier With Tow Package
- Article: Brake Controller Installation: Starting from Scratch
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Trailer Wiring
- Search Results: trailer brake controller
- Search Results: trailer hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Video: Redarc Tow-Pro Trailer Brake Controller Plug-and-Play Wiring Harness Review
- Article: Trailer Wiring Diagrams
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: trailer wiring
- Video: Finding the Right Trailer Wiring Harness
- Q&A: Recommended Brake Controller for 2025 Nissan Frontier
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Search Results: redarc trailer brake controller
- Q&A: 7-Way Trailer Plug Adapter or Compatibility with Lance Slide-In Truck Bed Camper