What Can Cause Trailer Connection Lost Message With Curt Echo C51180 Brake Controller
Updated 09/02/2025 | Published 06/30/2025
Question:
I am getting the message trailer connection has been lost.all the lights still work.when I use your connection tester everything works. I have put a new 7 way on the trailer. What am I doing wrong?
asked by: Don S
Expert Reply:
Hello Don, thanks for reaching out. When we see the trailer connection lost message with the Curt Echo # C51180 it is usually due to a dirty or corroded pin on your 7-way, or due to the controller not being inserted into the 7-way fully. Since your 7-way is new I assume corroded connections are not the problem but it might not hurt to clean your connections with a wire brush and apply some dielectric grease to confirm a clean/solid connection. Also make sure none of the pins on your 7-way are bent.
The trailer disconnected alarm has to do with the trailer brake controller pin draw on the 5 o'clock pin position on most vehicles. If you have a trailer connected and the alarm is on, you most likely don't have enough draw on that pin for the vehicle to recognize connection. Virtually every time I have seen this, the 7-way itself is at fault.
Product Page this Question was Asked From
Curt Echo Wireless Brake Controller - 7-Way Plug-in w/ Bluetooth App - Up to 2 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Smartphone App
- Under-Dash
- Up to 2 Axles
- Smartphone Display
- Multiple Trailers
- CURT
more information >
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Jesse M.
9/2/2025
Hey Don, did cleaning the connections and checking the pins on your 7-way help resolve the trailer connection issue? I'm following up to ensure we find the right solution for you.