Thread: Tow assist

Originally Posted by mowog

There are a few points there which bit is wrong?

The idea that the trailer stability assist works without the car knowing the trailer is connected. Dealer explained to me that the functions that underly TSA, namely electronic stability control, work all the time (obviously). When the car senses that a trailer is connected it switches to a different program designed to better deal with a swaying trailer.

Several other features are also switched on by the car when it senses the trailer is present:
- trailer indication on the dash
- reversing warning alarm muted
- air suspension will not change height while travelling at speed

Ergo, in my case, these functions and the enhanced form of ESC known as trailer stability assist, appear not to be working.

The D4 has a number of ways to detect the trailer. The electrical connections are just one. The important feature trailer stability control will work regardless of trailer electrical connections.

I have a box with a switch that allows the D4 to work with LED trailer lights. This box is a common fix for many euro cars and it can either be fitted to the trailer or the car. I my case I fitted it to the car because I was buying a new van at the time. I also have an LED light set fitted to the spare wheel on my Kaymar bar.

The issues you are having are not new there are answers on the forum.

Originally Posted by swordfish805

I don't believe you are correct - at leat my LR dealer has told me the opposite...

...you're assuming that he hasn't made a mistake...

M

my moneys on mowog

Originally Posted by camel_landy

...you're assuming that he hasn't made a mistake...

M

True - but he did tell me it is a question he gets asked fairly regularly and that the answer came from LR Aust.

In the linked Land Rover Video it states the stability assist will work without the trailer electrics connected. I suggest your Land Rover Contact needs retraining.

[ame=http://www.youtube.com/watch?v=5gyc4Dmgbew&feature=watch_response_rev]Land Rover's "Trailer Stability Assist" for Range Rover, Range Rover Sport and Discovery 4/ LR4 - YouTube[/ame]

The Tow assist has 2 sides to it hitch assist no trailer electrics needed because you are not hooked up. The reverse assist well yes the electrics need to be connected. But this is only on D4's with multiple cameras. It wont operate on a single reversing camera.

Did you pick up in the video that it only operates above 50mph (~80kph)!

Originally Posted by rufusking

Did you pick up in the video that it only operates above 50mph (~80kph)!

If you van has sway issues below this speed then there is something seriously wrong with it.