Cybertruck towing mode icon always red when my trailer connected.

[jackychu]

I hook up my travel trailer to Cybertruck and turn on the Towing mod.
But the icon always read. No power go thought 7-pin connector.
The lights and break control don't work.
Do I miss something? Any other option has to turn on?

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[mark555055c]

If you are able to test the trailer on another vehicle or the vehicle with another trailer I'd try that first.

Also, try all your lights and signals to see if any are out when plugged into the CT. CT has a trailer lights test mode which is useful for this if you don't have a helper.

There are these things too to test the vehicle connector..

Oyviny 7 Way Blade & 4 Pin Trailer Light Circuit Tester with LED Indicators 6 Function Light Tester for RV Truck Trailer Socket Tester https://a.co/d/hPGZOqJ

 

[Woodrick]

I'd look for the obvious in most electrical systems. Check the grounds. Especially with a trailer, I'd lay odds that one or more are loose or corroded.
Also, you may check the resistance of the pins and see if you see anything other than an open between circuits. (like backup to left turn or right to brake).

It's always a good time to unscrew each bulb on rh trailer and clean it, spray it and reinstall it.

I would have suggested getting your camping location to check them, but I know how expensive and long their turn-arounds can be. I checked Amazon for some testers, but they all seem to be the test the vehicle, not the trailer.

You could also try someone else's trailer.

Trailer lights are really notorious for issues. They aren't that weatherproof and that rarely get used.

 

[CYBRTREK]

Had that happen also, turns out that a mouse chewed through the trailer wires. Likely it is a problem with your trailer wiring.

 

[Cboy7]

Had that happen also, turns out that a mouse chewed through the trailer wires. Likely it is a problem with your trailer wiring.

this strikes fear in my heart regarding the cybertruck. Mice or rats could wreak havoc, unless they used special wire insulation

 

[Woodrick]

this strikes fear in my heart regarding the cybertruck. Mice or rats could wreak havoc, unless they used special wire insulation

So if you have any chance of it happening, call the pest guys and make sure that you'get got a tone of preventative measures in place.

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