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Old 07-21-2014, 08:15 AM   #1
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2005 30' Classic
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1.5 second delay with TT brake / release

I have found this problem identified on a few different fourms, but have not found the solution.

The trailer brakes take 1.5 seconds (apx) to activate after I hit the TV brakes. They also do not release for 1.5 seconds after I take my foot off the brake. if anyone has experienced this and fixed it please let me know.

TV 2011 Ram 2500 SLT 6.7 with integrated brake controller, tow/haul mode & exhaust brake.

TT 2005 Airstream 30 Classic with earlier version Actibrake the one with the side reservoir cap, Kodiak disc brakes

Just sold my excella with electric brakes, had no delay issues with same truck.

Will bleed brake lines to ensure that is not the issue. According to others with this problem, bleeding the brakes and replacing the brake controller did not fix the problem.

Any suggestions greatly appreciated
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Old 07-21-2014, 08:23 AM   #2
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It is normal and a recognized issue with pretty much all EH brakes to have an apply lag....but a release lag??????

The only way to reduce the apply lag is to ensure all air is out of the lines and shorten the distance from the actuator to the axles (not very realistic). Some have claimed that larger diameter lines will help, but I don't buy it.

Release lag, in my mind, can only be caused by: 1) a restriction in the lines...probably the rubber section...which can also contribute to an apply lag; 2) a controller with a weird program; 3) sticking caliper pistons; 4) or an actuator with a sticky release piston/valve.

IMO, you will never completely eliminate the apply lag, but can reduce the length of time of it. Mine is about .5 seconds - 1 second.
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Old 07-21-2014, 08:35 AM   #3
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Similar problem with my 2012 Ram 1500. I had my brake controller set too high. Backed it off to 4.0 and everything was OK.
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Old 07-21-2014, 09:13 AM   #4
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Had same problems with my '12 Dodge Ram truck to the point of going round and round with the dealer trying to get the built-in controller fixed. Even filed a lemon law claim against them, and they settled for the price of a new Prodigy P3 controller and the labor to research how to install it, and figure out how to make it work with the vehicle's computer system and not go into alarm.

The Dodge controller is simply a piece of junk time delay unit, and has been discussed at great length on the Dodge Ram forums. If you combine it with a less than perfect electric over hydraulic trailer brake system, you really have delay problems.

I would recommend you first, replace the truck's controller with a good unit, and then with great care and attention to detail, re-bleed the brakes. PM me if you would like info about how to replace the controller.

You will not get the E/H brakes to work with absolutely no delay, and Dexter says they get less than one second, so 1.5 seconds is actually close.
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Old 07-21-2014, 09:28 AM   #5
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Any chance to do some test braking with a TV W/O integrated brake controller?

Did you just setup up this combo or did this problem develop recently and didn't happen previously?
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Old 07-21-2014, 09:49 AM   #6
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thanks for the quick responses, good suggestions, will do some testing today.

I have a jeep Cherokee diesel (7200 lb TC) with a prodigy 2, may be able to do a driveway test.

found this installation and test procedure, it is what I have installed so with your suggestions and this I should be able to pin this down. if not I will be looking for a procedure from you steveH (thx).

http://www.google.ca/url?sa=t&rct=j&...TRaQzuBPeKkY9g
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Old 07-21-2014, 09:55 AM   #7
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I have had the truck for a while, towed without issue electric/drum excella, this truck trailer combo is new and problem was evident right away.
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Old 07-21-2014, 10:39 PM   #8
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UPDATE...

The 2011 Ram 2500 integrated brake controller is not to be used with electric over hydraulic Trailers. The 2012 and later Ram is fine and has a menu to select electric over Hydraulic. Working with dealer to see if upgrade to 2012 unit and flash is possible. If not I will follow your lead SteveH and disable existing and replace. If anyone has any knowledge on intergraded controllers in the Ram and what the difference is between 2011 and 2012 let me know... dealer not sure at this time .. thx
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Old 07-22-2014, 04:55 AM   #9
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Yes, my '12 Ram had a setting for electric over hydraulic, but it would not work at all with the Actibrake unit that came on my trailer until a ballast resistor was installed parallel with the Actibrake. The Dodge unit sends out a negative pulse to verify if the trailer brakes are hooked up, and the Actibrake was polarity sensitive, so the Dodge controller would never "see" the Actibrake as being there and hooked up. Even after the ballast resistor made it work, there was still the delay.

I would not recommend you spend one red cent converting to the '12 model Dodge controller.
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Old 07-22-2014, 07:39 AM   #10
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the truck is under warranty so no cost, but from your experience this solution will not work, thx for the heads up. the 2011 owners manual states electric brakes only so I expect I am on my own to convert to a Prodigy P3 controller. the issues I am having are more than just delay, weak braking even at highest setting and delayed release is biggest pain. will send PM for details on replacing controller. thx.
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Old 07-27-2014, 07:05 PM   #11
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fixed.

removed oem brake controller from Ram, had a P2 Prodigy in my jeep >> now in the Ram. Works great!!

After removing the oem controller, a trailer brake alarm appeared on dash, The dealer needed to remove sales code (XHC) from Ram then reload the flash to clear.
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Old 07-27-2014, 07:10 PM   #12
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tintoaster,

Delay on apply and release, both gone from changing controller?

Just curious. Glad you've made headway on the issue.

Gary
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Old 07-27-2014, 08:09 PM   #13
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yes, I have a very minor delay when I apply brakes now, but almost unnoticeable. the release delay is gone.

the 2011 Ram 2500 oem brake controller is not compatible with electric over hydraulic trailer brakes. I drove over 1000 miles to pick up the trailer, kinda scary my new truck came with a less than adequate brake controller. long drive home... the inexpensive P2 works great.
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