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Discussion Starter #1
I pull a 30' RV with my 2016 Supercrew Ecoboost and a ProPride hitch. 7500 lb loaded trailer. My question relates to the brake controller. My trailer pushes my truck when I apply the brakes. Of course, it should not do this. I set my Gain to 9 at the moment. I noticed the Output is not lighting up fully when I apply the brakes harder. I usually get 2 lights on the Output screen. My Gain is plenty high but how can I adjust the Output to work the trailer brakes harder ? The faster I have to stop, the harder my trailer wants to hit/bump my truck. I can apply the trailer brakes manually and the trailer will stop better but that is dangerous to me.
I have a 6 1/2 foot bed, 3.5 Turbo Ecoboost, 4x4, XLT with trailer option.
Thanks in advance.
 

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I have a very similar setup as you, but a ‘13 Platinum Screw SB 4x4 3.5 EB with Max Tow and I use a Blue Ox Sway Pro WDH. When we bought our current trailer new in April of 2016 I noticed the same thing. I had to turn my truck’s built in brake controller up to 9 or 9.5 to get it to work properly. But over time it got better and now I typically run it at 8 to 8.5. I think it may be because the self-adjusting trailer brakes had not self adjusted enough when it was new and it took awhile for them to do so. You might want to manually adjust your brakes.


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I think parkerbill is correct. You should start by manually checking the brake adjustment at the trailer. I tow with a 2012 and have my gain set at about 7-8. If I was up at 9, when braking the trailer would actually pull back on truck (way too much trailer braking.) Not sure about model/year differences.
 

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Discussion Starter #4
Thanks to both parkerbill and DNA Dan. I will adjust brakes. When I had my brakes replaced a year ago, the mechanic told me I would be able to go down to a Gain of 2 or 3 after some breakin but it is not happening. Thanks again.
 

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Some of those brakes are setup to adjust themselves while braking in reverse. Sometimes they can get rusty and get stuck so they don't adjust properly.
 

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I've destroyed a self adjusting try to adjust it. You would think I would learn to leave alone

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Discussion Starter #7
Yep. My last brake change happened because the auto adjust messed up. My mechanic removed the auto adjust. Good move or not ?
 

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When you back up your RV, apply the brakes quite hard or make a special application in a parking lot somewhere. Do this a couple of times. This used to work on cars with drum brakes and I think this works with RV brakes. I've never used the +/- controls on the dash but maybe they work in addition to the electronic read out (otherwise why have it?). My trailer is 10,000 lbs and I tend to back up faster than my wife would like. The silver lining seems to be my RV brakes work so well I could almost forget I was towing (which is probably not a good idea).
 
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