Troubleshooting Trailer Disconnected Message on Truck Dash

Question

Question:

I start getting the Trailer Disconnected message on my dash

asked by: Sam

0

Expert Reply:

If you are occasionally getting a "Trailer Disconnected" message on the dash of your truck the first place to look is the 7-Way connector on both the truck and trailer. You will want to inspect the connectors for any debris or corrosion that might be built up inside the pins, cleaning out as needed. Anything that would prevent a solid connection between the pins can trigger this alert on your dash.

Next I recommend inspecting the brake output wire on the trailer, which is usually blue, from the brake assemblies themselves up to the 7-Way. Check for any exposed or pinched areas that need to be replaced. Also check the wire coming from the 5 o'clock position on the truck side 7-Way as far as you can for any signs of damage.

If the wiring is good then a weak ground connection could be the culprit. Make sure the main ground at the tongue and the ground wires for each brake assembly on the trailer are securely attached to a clean, bare metal surface free of rust or paint.

Just let me know if the warning light continues to come on and we can keep troubleshooting. I have also attached a wiring article that you might find helpful.

expert reply by: Chris R

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Answer 1

According to Progressive Dynamics, their #PD4645V Replacement 45A converter would be the proper replacement for your Parallax 7345 power converter. The unit is designed as a direct replacement for the converter in your existing power…

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Answer 2

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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Answer 3

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 4

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 7

Choosing the right height setting for your 5th wheel hitch is a combination of a few different variables. First of all you want your towing setup to be as level as possible. With your Montana High Country 340BH level you will want to measure from the…

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Answer 8

Hey David, from previous customers of ours who have the same 2020 Keystone Raptor 424 we have determined that your pin box style is the Lippert 1621 which means for a Gen-Y gooseneck adapter you'd want the #GY58GR that you referenced.

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Answer 9

I attached a picture that has all of the available positions you can use for varying heights with the B and W Companion hitch part #BWRVK3305. It's best to measure first to determine which height you'd need, but if not then I'd go with…

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