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Old 05-19-2011, 10:02 PM   #1
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Question trailer sway dampning

does any one know if tsd is only avalible through the factory, aftermarket or are all jk,s aready equiped with this as stated in another thread. thanks any info would be helpful

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Old 05-20-2011, 05:20 AM   #2
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Its part of the ESP system, but only activated if the towing pack is installed from the factory. I havent heard of it being retrofitted by a dealer.

At least thats the way it comes down here

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Old 05-20-2011, 06:39 AM   #3
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Old 05-20-2011, 07:14 AM   #4
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A lot of times on the highway I see several people who forget trailers are not supposed to pulled at 70 or 80 mph. Should be 55-60mph, just have to ask, how fast are you going when it sways???

I know that adding weight to a trailer just above the axles can really help to. Be sure the bulk weight of your load is centered there for a better pull. Or, come up with a way to add some even weight above each wheel.
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Old 05-20-2011, 07:34 AM   #5
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^^^Always balance the weight, you want the tongue to be horizontal. This means if you have to buy a new hitch, drop or lift to make it horizontal, DO IT! I see too many trailers (usually U-haul or rented) that have crazy tilt to them, usually too tongue heavy. On a single axle trailer, it's not as bad, but when I see tandem axle trailers with a tilt, that's scary looking. Regardless, if they aren't horizontal, the trailer towing characteristics changes. If you load the trailer back heavy, it will sway excessively. If you have too much tongue weight though, then you will cause your own vehicle to lose steering control.

And depending on the trailer and tow setup, 70-80 isn't a big deal. It's when you have the large campers and small tow vehicles in a strong wind that causes issues, or improper tongue weight. I pull a flat bed trailer a lot, and speed isn't an issue as long as it's hooked up and loaded properly.

I'm just curious, does anyone know how the trailer sway dampening works on the jeeps?
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Old 05-20-2011, 09:57 AM   #6
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re: "I'm just curious, does anyone know how the trailer sway dampening works on the jeeps?"

I read a complex explanation in the factory Jeep site literature.

The complexity and esoteric aspects helped me decide that I didn't need a new JKU with such a set up, so I bought a used 08 JK as that will not be my primary tow rig anyway.

If I understood the description properly (no guarantee of that)
the tow sway program is related to the anti-skid braking program in a way I can't describe adequately.
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Old 05-20-2011, 10:13 AM   #7
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From my understanding, all it does is it sensors when the rear of the Jeep begins to sway, so it reduceds engine torque and will apply the brakes on an individual or a couple wheels to regain control of the vehicle and keep it in a straight line. It reminds me of the ABS and traction control commercials where the brakes are applied to keep the maximum traction, only in this case, it's used to reduce sway.
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Old 05-20-2011, 10:24 AM   #8
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I will try and find you the link. Trailer sway is a nu-sense but can be corrected and you can pull at 70-80 mph. I do all the time ( I tow about 20k a year with my diesel and trailer) then I drive a tow truck 6 nights a week. I tow a lot of stuff, just make sure you are setup to tow properly and it will track straight behind you at any speed. But if your swaying, you are either to heavy on the tongue or to heavy on the butt of the trailer. Pics would help
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Old 05-20-2011, 10:28 AM   #9
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^^^^I agree with you except sway can be caused by external factors too, I've seen trucks, including semi's blown over from the wind out near Wyoming. Also fast lane changes or swerving, but still some factors can't be controlled.

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