2005 TBC...no trailer brake power until over 10mph?? Why?? - Diesel Forum - TheDieselStop.com
1999-2007 General Questions General questions related to 1999-2007 Super Duty trucks. If it doesn't fit the other categories, post it here. Gas engine discussion that pertains to all models is allowed. Specific gas engine questions should use the Gas Engines forum.

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post #1 of 1 (permalink) Old 05-28-2019, 12:47 PM Thread Starter
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Exclamation 2005 TBC...no trailer brake power until over 10mph?? Why??

I've running the oem built in Trailer Brake Controller (TBC) in my 2005 F250 with the 6.0 in it. 95% of the time, the TBC works great. It's nice and smooth with applying the brakes in my camper, boat, or utility trailers...and seems to have plenty of power.

BUT......any time I'm going slower that around 10mph, even though it's showing that it's putting out power on the display, it doesn't put any power to the trailer brakes. Even if I manually squeeze the actuator lever all the way down, ZERO stopping power.

I read someone one one of the forums that this is normal for that year TBC's.....you need to get up to 10mph before it starts applying braking power. Is that true? If so, why in the hell would Ford design it like that? It's caught me off guard a few times going down steep hills at a slow speed, or rolling up to a stop light....you pretty down on the brakes, and the trailer just tried to push the truck. Talk about dangerous!!

Is there any fix for this besides putting in an aftermarket TBC? Any info on this would be great! I can't be the only one who hates this "feature" on the OEM TBC's.

Thanks for the info!

2005 F250 6.0 PSD, ARP Studs, Felpro HG's, EGR Delete, IPR Coolant Filter, Bilstein 5100s, Blue Spring Mod, IDP Custom Tunes
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